Please Dont Laugh At Me

[Islamiyyah]

But I have a major exam coming up called regents, the math area. I am EXTREMELY horrible with math, I have been taking Algebra1 since eighth grade which is about 3 years. In everything else I excel in alhamdulillah but for some reason math is just a bad subject. I take notes, but I dont understand what I am writing and now I am reviewing them and I just cant seem to grasp this lesson here from a while back. I dunno if you will understand my notes but if someone can help Insh'Allah that will be excellent. I write extremely small so you might have to zoom in. :jkk:


Oh and I made a random graph becasue I didnt know what I was doing.

http://download.yousendit.com/DB576E901089363B

[Cartman]

i aint laughing.

but its impossible to see the notes...writings too small

[belal1]

But I have a major exam coming up called regents, the math area. I am EXTREMELY horrible with math, I have been taking Algebra1 since eighth grade which is about 3 years. In everything else I excel in alhamdulillah but for some reason math is just a bad subject. I take notes, but I dont understand what I am writing and now I am reviewing them and I just cant seem to grasp this lesson here from a while back. I dunno if you will understand my notes but if someone can help Insh'Allah that will be excellent. I write extremely small so you might have to zoom in. :jkk:


Oh and I made a random graph becasue I didnt know what I was doing.

http://download.yousendit.com/DB576E901089363B

lol sis don't be afraid of the Regents. it's simple =]

when i was taking it few years back, I would practice straight from old regents exams, and alhumdulilah I passed with 96? or 98? one of em. most of the regents are dumb easy. the easiest was history...only biology was hard and i scored at 87 on it which was my lowest score.

and considering that i passed high school with a 68 average...believe me, regents is easy =]

[Islamiyyah]

Even when you zoom in or press the button when the picture shows called like view original size?

[Ibn Khattab]

you need some Galileos telescope to read this :D

im trying to make out what it says. whats the topic again?

[belal1]

i aint laughing.

but its impossible to see the notes...writings too small

download it, right click on the file, goto preview, and then zoom in. it's clear when u zoom in, alhumdulilah

[Islamiyyah]

lol sis don't be afraid of the Regents. it's simple =]

when i was taking it few years back, I would practice straight from old regents exams, and alhumdulilah I passed with 96? or 98? one of em. most of the regents are dumb easy. the easiest was history...only biology was hard and i scored at 87 on it which was my lowest score.

and considering that i passed high school with a 68 average...believe me, regents is easy =]

I have to take Global Economics Regents, Bio, Math, and English. All of those I know for a fact InshAllah I'll pass, but math is bothering me. I always skip that class but my teacher said if I pass the math regents, she'll let me pass the class. But I think you need like a 65% to pass the math right? Or lower? I am still new to the regents thing.

[Ibn Khattab]

Is this like Pythagoras theorem? and finding the length of a line?

[belal1]

I have to take Global Economics Regents, Bio, Math, and English. All of those I know for a fact InshAllah I'll pass, but math is bothering me. I always skip that class but my teacher said if I pass the math regents, she'll let me pass the class. But I think you need like a 65% to pass the math right? Or lower? I am still new to the regents thing.

yah..thats the normal mentality with almost all high school teachers in nyc (not all but majority), that if u pass regents u pass the class since u know ur stuff.

anyway, what part of this math is bothering u? is it the actual math? the questions? which one?

[Islamiyyah]

you need some Galileos telescope to read this :D

im trying to make out what it says. whats the topic again?

I know I write soo small. Sorry guys!

The topic is distance forumula and how to graph it.

[Ibn Sina]

Aren't you supposed to label the points on the triangle .... ? :scratch:

[Cartman]

what do you need to know?

[Joha]

I've just had a look at the file.

Since I don't know what it is you don't understand, I'll try and say what I think the page is about, and what you don't understand, feel free to ask.

It's about calculating distances between two points - any two points. And it's based on one formula - Pythagoras' Theorem.

Simply put - take the sides of a right angled triangle labelled with sides of length a, b, c - with a being the hypotenuse (the longest one - essentially)

Then: a^2 = b^2 + c^2

So, (this is what the sheet seems to be focussing on) - given two points, any two, you can plot them, join them up to give you the hypotenuse of the triangle.

Then complete the right angled triangle, and using the co-ordinates they give, work out the length of the sides b and c, which will then give you the length of the side a, which is basically the distance between the two points.

[Ibn Khattab]

The distance formula is used to find the distance of a line. you need to memorise that formula and then literally substitute in the values. for example give me a question to use as a reference.

[Islamiyyah]

Here are some sample problems:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)

2) (-3.5, 4.5), (-4.5, 5.5)

[LastFriday]

ALl you have to do IS ZOOM IN ppl...its not that HARD... >.>
SorrY i can't help you tho <_>" I suck at math my self...can make dua tho :rolleyes:

[zammy]

do you get the Pythagorean theorem part? we can start with that if you don't get it. that and the distance one are just formulas. you just plug in the numbers that are given, or you found.

[Ibn Sina]

I've just had a look at the file.

Since I don't know what it is you don't understand, I'll try and say what I think the page is about, and what you don't understand, feel free to ask.

It's about calculating distances between two points - any two points. And it's based on one formula - Pythagoras' Theorem.

Simply put - take the sides of a right angled triangle labelled with sides of length a, b, c - with a being the hypotenuse (the longest one - essentially)

Then: a^2 = b^2 + c^2

So, (this is what the sheet seems to be focussing on) - given two points, any two, you can plot them, join them up to give you the hypotenuse of the triangle.

Then complete the right angled triangle, and using the co-ordinates they give, work out the length of the sides b and c, which will then give you the length of the side a, which is basically the distance between the two points.

But aren't they already supposed to be labeled?

and its c^2 - b^2 = a^2 :rolleyes:

[Cartman]

IF youre trynna find distane then you do (X2-X1)^2 +(Y2-Y1)^2
ITs just plugging numbers in, and once you find the value, u take the square root of that and thats your distance.voila

[Joha]

Here, have a look at this page: It explains it quite well and it seems like that's what you've got on your sheet too.

http://www.bbc.co.uk/schools/gcsebitesize/maths/shapes/linesegmentsrev2.shtml

[Muqtabis-unNoor]

Math A (or Algebra I) is really simple, don't worry. If you do need help, ask me.

[Ruprecht]

Here, have a look at this page: It explains it quite well and it seems like that's what you've got on your sheet too.

http://www.bbc.co.uk/schools/gcsebitesize/maths/shapes/linesegmentsrev2.shtml

Ahh good. While you're explaining stuff perhaps you can explain Symplectic geometry for me... :D

[Islamiyyah]

My teacher has mentiones Pygathroemememem theory, but I dont know what it is. Its funny casue when she comes to me and explains it I understand, but once I get home I forget. Joha I completly didnt understand what you explained :o. Guys I am really bad at math so please bare with me becasue this may be a while.

I just want someone to explain my notes? I take them down but I dont understand what is being explained it it. For example in the bottom corner is is saying something about simples radical form?

[zammy]

and its c^2 - b^2 = a^2 :rolleyes:

that's not the Pythagorean theorem :scratch: it's A squared + B squared = C squared.

[Joha]

Okay - Definitely have a look at that link - it seems to be simplest way to explain this.

Meanwhile I'll do these:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)

2) (-3.5, 4.5), (-4.5, 5.5)

1) Point 1 is at x = 3, y = -2
Point 2 is at x = -1, y = 5

So the difference in x is 5, the difference in y is 7

The distance is therefore 5^2 + 7^2 = distance^2

So the distance = Square Root (25 + 49)

2) Point 1 is at x = -3.5, y = 4.5
Point 2 is at x = -4.5, y = 5.5

So the difference in x is 1 (-3.5 - - 4.5), the difference in y is 1

The distance is therefore 1^2 + 1^2 = distance^2

So the distance = Square Root (2)

[belal1]

Here are some sample problems:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)

2) (-3.5, 4.5), (-4.5, 5.5)

see sis...coordinates as u know, come in this form: x, y . the first number is "x", while second is "y".

when they want u to find the distance, they want u to find the difference between the two X coordinates and the two Y coordinates. this is simplified by using the DELTA sign (the little triangle).

for for question 1) the answer is get the difference between -1 and 3, and square it. then get the difference between 5 and -2, and square it. add the two products up, and get the square root, and thats ur answer.

that's just the Distance formula. if u memorize it, it's very easy because all u gotta do is plug in the number. right now ur taking algebra 1, so its not expected that u really understand things that much. when u get to calc, then u'll see how all this fits in. actually when u take physics, u'll see how it all fits in.

i think u can do question 2 on ur own =]

[Ibn Khattab]

SIS do u understand this?

thts ur answer to your sample question 1.

[Cartman]

you use the pythagorean theorem if you know the length of one fo the sides of a triangle if you know the length of only two of the sides.

You take the first side. multiply it by itself. You atke the second side and multiply itself. now you add those two numbers. And once you add those two numbers you take the square root of whatever you come out with. and bam thats the length of the third side

[Joha]

Joha I completly didnt understand what you explained :o. Guys I am really bad at math so please bare with me becasue this may be a while.

Yea, I didn't understand it myself (not how I explained it...) have a look at the BBC page, it does do exactly what your notes do - just clearer.

[Muqtabis-unNoor]

My teacher has mentiones Pygathroemememem theory, but I dont know what it is. Its funny casue when she comes to me and explains it I understand, but once I get home I forget. Joha I completly didnt understand what you explained :o. Guys I am really bad at math so please bare with me becasue this may be a while.

I just want someone to explain my notes? I take them down but I dont understand what is being explained it it. For example in the bottom corner is is saying something about simples radical form?

simplest radical form is when you break down the radical into a smaller radical. For example, radical 20.

radical 5 X radcal 4 = radical 20

you can find the square root of 4 which is 2

and there is no square root of 5 so you leave it as "radical 5"

so it would turn out to be :

2 (radical sign with a five in it)

don't worry, I sucked at math for years until last year...with the help of Allah SWT and an excellent math teacher, i excelled. the same insha'allah will happen to you.

[Ibn Khattab]

you can use it as a guide, just replace the numbers with those in whatever question your doing.

[Islamiyyah]

Okay - Definitely have a look at that link - it seems to be simplest way to explain this.

Meanwhile I'll do these:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)

2) (-3.5, 4.5), (-4.5, 5.5)

1) Point 1 is at x = 3, y = -2
Point 2 is at x = -1, y = 5

So the difference in x is 5, the difference in y is 7

The distance is therefore 5^2 + 7^2 = distance^2

So the distance = Square Root (25 + 49)

2) Point 1 is at x = -3.5, y = 4.5
Point 2 is at x = -4.5, y = 5.5

So the difference in x is 1 (-3.5 - - 4.5), the difference in y is 1

The distance is therefore 1^2 + 1^2 = distance^2

So the distance = Square Root (2)

Okay wait so for number one did you subtract the x from the other x and the y from the other y? And what does the ^ mean?



Ibn Khataab okay I remember that, its called distance forumula? I remember it now and how to do it. :jkk: are those what my notes are on?


and belal what you explained was the sqaure root of x1- x2 to the second power plus y1 -y2 to the second power?

[zammy]

SIS do u understand this?

thts ur answer to your sample question 1.

this explains the distance formula well

[Kubs]

[SIZE="3"][FONT="Times New Roman"]Here are some sample problems:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)

(3, -2) (-1,5)

The equation is:

d= √(x1 – x2)² + (y1 – y2) ²

3 = x1

-2 = y1

Likewise

-1 = x2

5 = y2

Put these into the equation.

d = √(3- - 1 )² + (-2 – 5) ²

d = √(4)² + (-7) ²

d = √(16 + 49)

d = √65

d = 8.1


I could be wrong :o

[Joha]

Okay wait so for number one did you subtract the x from the other x and the y from the other y? And what does the ^ mean?



Ibn Khataab okay I remember that, its called distance forumula? I remember it now and how to do it. :jkk: are those what my notes are on?


and belal what you explained was the sqaure root of x1- x2 to the second power plus y1 -y2 to the second power?

Sorry, the ^ means to the power of. x^2 means x squared.

Yes, you substract the x from the x, and the y from the y, always.

And the simplest radical form is literally just getting rid of square roots that you can work out, getting rid of cube roots and anything else funny.

Erm...and I made a mistake, 3 from -1 isn't 5....

[Muqtabis-unNoor]

Okay wait so for number one did you subtract the x from the other x and the y from the other y? And what does the ^ mean?



Ibn Khataab okay I remember that, its called distance forumula? I remember it now and how to do it. :jkk: are those what my notes are on?


and belal what you explained was the sqaure root of x1- x2 to the second power plus y1 -y2 to the second power?

the ^ means that the number in front of it is an exponent.

1^2 is 1 to the 2nd power.

2^6 is 2 to the 6th power.

Sorry, I know you didn't ask me, but i thought you'd prefer quick answers.

[Islamiyyah]

simplest radical form is when you break down the radical into a smaller radical. For example, radical 20.

radical 5 X radcal 4 = radical 20

you can find the square root of 4 which is 2

and there is no square root of 5 so you leave it as "radical 5"

so it would turn out to be :

2 (radical sign with a five in it)

So the radical of 20 is 5x4? and the radical of 4 is 2x2? Im really confused becasue then I thought a radical is a number which two even numbers can make. Like 2x2=4 but then I seen 5x4 and 5 isnt even. So are all numbers radical?

[Ibn Khattab]

sorry my answer is wrong lol.

basicly the answer is root 65 = 8.06

[Kubs]

Okay - Definitely have a look at that link - it seems to be simplest way to explain this.

Meanwhile I'll do these:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)

2) (-3.5, 4.5), (-4.5, 5.5)

1) Point 1 is at x = 3, y = -2
Point 2 is at x = -1, y = 5

So the difference in x is 5, the difference in y is 7

The distance is therefore 5^2 + 7^2 = distance^2

So the distance = Square Root (25 + 49)



I don't think this is correct brother. The difference in x isn't 5...it's 4.

[Joha]

So the radical of 20 is 5x4? and the radical of 4 is 2x2? Im really confused becasue then I thought a radical is a number which two even numbers can make. Like 2x2=4 but then I seen 5x4 and 5 isnt even. So are all numbers radical?

no absolutely not. Ignore that. You don't simplify numbers like that.

We're talking about simplifying radicals (square roots, cube roots etc...)

A radical is the name commonly given to the root symbol...

I don't think this is correct brother. The difference in x isn't 5...it's 4.

I know, please don't laugh at me :p

[Kubs]

I know, please don't laugh at me :p

Hahahaha :outta:

[Islamiyyah]

Okay so my notes are explaining distance forumula, which I knwo understand, alhamdulillah. Now I need to understand simplest radical form. And oh :jkk: for explaining the ^ sign.

So let me ask, when they ask you to graph it, they are just asking you to solve the distace forumula and whatever coordinates you get you graph them?

[tickledpinko]

i really suck at math too :rubeyes:

but here's a problem similar to the one in your notes, with its solution using the distance formula:
http://www.algebra.com/algebra/homework/Points-lines-and-rays/Points-lines-and-rays.faq.question.117746.html

[Muqtabis-unNoor]

So the radical of 20 is 5x4? and the radical of 4 is 2x2? Im really confused becasue then I thought a radical is a number which two even numbers can make. Like 2x2=4 but then I seen 5x4 and 5 isnt even. So are all numbers radical?

not all numbers can be divided evenly. for example, radical 4 is 2.

radical 3 however cannot be simplified or broken down any further. there are no even numbers that multiply to get 3.

[Saudi Prince]

Here are some sample problems:

Find the distance between each pair of points to the nearest tenth.

1) (3, -2), (-1,5)



Given the two points (x1, y1) and (x2, y2), the distance between these points is given by the formula:

y= root[x2-x1)^2 + (y2-y1)^2 ]

Please pay attention to the colours.


In the given example:

x1=3
y1= -1
x2= -1
y2= 5

y = root[(-1-3)^2 + (5-(-2))^2]
y= root [(-4)^2 + (5+2)^2]
y= root [(-4)^2 + (7)^2]
y= root [16 + 49]
y= root [65]
y= 8.06


2) (-3.5, 4.5), (-4.5, 5.5)

You can do it the same way!

[Joha]

Okay so my notes are explaining distance forumula, which I knwo understand, alhamdulillah. Now I need to understand simplest radical form. And oh :jkk: for explaining the ^ sign.


A radical is the name commonly given to the root symbol...

So it only involves simplifying things within square roots (or cube roots etc...), as it were.

So Square root (49) would simplify to 7.

Square root (80) would simplify to square root(20*4) which is the same as sqroot(20)*sqroot(4) which is the same as 2*sqroot(20). Which can be simplified even more to 4*sqroot(5) using the same steps.

Savvy?

[Islamiyyah]

no absolutely not. Ignore that. You don't simplify numbers like that.

We're talking about simplifying radicals (square roots, cube roots etc...)

A radical is the name commonly given to the root symbol...



I know, please don't laugh at me :p

Oh sorry I have a very weird way on firguring out things and complicating them further:smack:

[Muqtabis-unNoor]

Okay so my notes are explaining distance forumula, which I knwo understand, alhamdulillah. Now I need to understand simplest radical form. And oh :jkk: for explaining the ^ sign.

So let me ask, when they ask you to graph it, they are just asking you to solve the distace forumula and whatever coordinates you get you graph them?

Nope. Distance formula only gives you the length of the side of the shape you're making with the coordinates.

You cant use the formula if you dont have coordinates. they will always give you the coordinates if they want you to find the distance between two points.

[belal1]

and belal what you explained was the sqaure root of x1- x2 to the second power plus y1 -y2 to the second power?

yup... but here's a part i donno if u caught it, but when u get a difference between two coordinates, use X2 - X1, not X1-X2 as u have above.

[Kubs]

Why is everyone giving 8.06 as the answer? Should it not be 8.1....to the nearest tenth?

[zammy]

I don't see what there is to graph though? you're just finding length of sides. So the graph doesn't change from when you first drew it, unless you want to label the distance?

[Islamiyyah]

Okay I undertsand simplest radical form now. Alhamdulillah.
Okay so I understand the bottom half of my notes, but you see the top half next to number 2? I dont understand that as well.

:jkk: everyone so much for your patience and help!!

[Ibn Khattab]

Why is everyone giving 8.06 as the answer? Should it not be 8.1....to the nearest tenth?

Na'am its 8.1 to the nearest tenth :up:

[Joha]

yup... but here's a part i donno if u caught it, but when u get a difference between two coordinates, use X2 - X1, not X1-X2 as u have above.

Actually, don't worry, you can do either (which makes life a lot simpler). Since you're squaring the numbers, you get rid of the -ve sign that way.

So do any, x2-x1, or x1-x2, just don't forget to square it.

[Muqtabis-unNoor]

Why is everyone giving 8.06 as the answer? Should it not be 8.1....to the nearest tenth?

you dont have to find the square rot of 65.radical 65 will work.

[Joha]

Ahh good. While you're explaining stuff perhaps you can explain Symplectic geometry for me... :D

lol, it's the simple stuff that's hard, symplectic geometry...once I've named my kid a symplectic manifold, I'll get round to explaining it to you :D

[Kubs]

you dont have to find the square rot of 65.radical 65 will work.

If the question is specifically asking you to round to the nearest tenth, that means they want you to square root the 65. Otherwise why would they ask?

[Muqtabis-unNoor]

If the question is specifically asking you to round to the nearest tenth, that means they want you to square root the 65. Otherwise why would they ask?

oh it asked you to round? well my bad.

[Islamiyyah]

Okay I am going to try some problem out, correct me please Insh'Allah, just ive me a min.

[Ibn Khattab]

what the hell is a radical? you mean like an extremist or terrorist or something:p

[belal1]

Actually, don't worry, you can do either (which makes life a lot simpler). Since you're squaring the numbers, you get rid of the -ve sign that way.

So do any, x2-x1, or x1-x2, just don't forget to square it.
thats true, but wouldn't it cause problems when she tries to apply this to physics or something else. where u don't square the answer. so problems like slopes, where u don't square, can cause issues. but u probably know better than me so i'll leave it at that.

[Islamiyyah]

Okay here I did another prob, but I think I did something wrong.


http://download.yousendit.com/EA6C446A5CA1E525

[Saudi Prince]

Okay here I did another prob, but I think I did something wrong.


http://download.yousendit.com/EA6C446A5CA1E525

The answer is 14

[Joha]

Okay here I did another prob, but I think I did something wrong.


http://download.yousendit.com/EA6C446A5CA1E525

Nope, the 0^2 makes perfect sense, the two points are on the same line (same x coordinates).

Try plotting it and you'll see what I mean. (Try and visualise it...and if you can't, just trust the numbers)

So the distance is just the difference between the y-coordinates - ie. 14.

[belal1]

Okay here I did another prob, but I think I did something wrong.


http://download.yousendit.com/EA6C446A5CA1E525

keep going...i think its correct.

lets see 14squared is 196...answer is...14!

[Muqtabis-unNoor]

zero squared is 0. 14 squared is 196. 0 plus 196 is 196, and square root of 196 is 14.

[zammy]

-14^2 looks right to me. how'd you get 14 bro? Oh nevermind, you guys square rooted it.

[Islamiyyah]

Ahh wait wait wait guys. I think I understand why it is 14. Is it becasue you cancel out both the ^2 on each side so you are left with 0- (-14) and you but -14 in absolute value form, thus getting 14?

[Saudi Prince]

so many teachers :rofl1: Come on it is just A level!

[Joha]

thats true, but wouldn't it cause problems when she tries to apply this to physics or something else. where u don't square the answer. so problems like slopes, where u don't square, can cause issues. but u probably know better than me so i'll leave it at that.

well, yes I suppose you're right. In this case it makes no difference.

The reason I wouldn't bother even with slopes and things in Physics is that you can just shove in a minus sign here and there based on the context. Which is why mathematicians don't like us...but hey, we still manage to get things done :D

[Saudi Prince]

Ahh wait wait wait guys. I think I understand why it is 14. Is it becasue you cancel out both the ^2 on each side so you are left with 0- (-14) and you but -14 in absolute value form, thus getting 14?

This is very dangerous!

[Joha]

so many teachers :rofl1: Come on it is just A level!

GCSE...

[zammy]

Ahh wait wait wait guys. I think I understand why it is 14. Is it becasue you cancel out both the ^2 on each side so you are left with 0- (-14) and you but -14 in absolute value form, thus getting 14?

lol woah why did u complicate it? It's the same answer you got (196) but square rooted, because it was all under a square root sign.

[Joha]

Ahh wait wait wait guys. I think I understand why it is 14. Is it becasue you cancel out both the ^2 on each side so you are left with 0- (-14) and you but -14 in absolute value form, thus getting 14?

Never ever do that :)

This is why it's 14. (Squares never cancel like that)

zero squared is 0. 14 squared is 196. 0 plus 196 is 196, and square root of 196 is 14.

[Islamiyyah]

so many teachers :rofl1: Come on it is just A level!

I'm sorry I'm not super smart, but math is just an extremely weak area for me. I am above average in everything else except this. I have a 90% average in school so... Some people need more help than others.

[Muqtabis-unNoor]

This is very dangerous!

its (x1-x2) + (y1-y2)

y1 is -7. y2 is 7 but becomes -7 because of the minus sign in front of it. -7 -7 is -14 and that squared is 196, as a negative times a negative equals a positive.

[Islamiyyah]

Wait so how does 0^2 + -14^2 = 14?

[Joha]

Wait so how does 0^2 + -14^2 = 14?

It doesn't, it equals 196. You then have to square root the answer to get the distance. Remember the formula? a^2 = b^2 + c^2...

so the distance is square root (b^2 + c^2)

[Saudi Prince]

its (x1-x2) + (y1-y2)

y1 is -7. y2 is 7 but becomes -7 because of the minus sign in front of it. -7 -7 is -14 and that squared is 196, as a negative times a negative equals a positive.

But her way was wrong! You can't remove the squares! The 14 was correct by chance!

[Islamiyyah]

It doesn't, it equals 196. You then have to square root the answer to get the distance.

Oh! I get it now. Okay let me try just one more problem, I have this thing where I just have to get things right.

[Muqtabis-unNoor]

Wait so how does 0^2 + -14^2 = 14?

you forgot that its not just 0^2 + -14^2 = 14. there is a radical sign over it which means that when you do the stuff inside of it, you find the square root of the number that comes out.

[zammy]

Wait so how does 0^2 + -14^2 = 14?

because:

-14^2= 196

so 0 + (196) = 196

square root 196 (because all the calculations you made are under that big square root sign)

so square root of 196 = 14

[AbuMubarak]

http://www.bbc.co.uk/schools/gcsebitesize/gigaflat/re/iscontraception/iscontraception_quiz.shtml

[Islamiyyah]

http://download.yousendit.com/9DDC95AB3F7C450A

[Joha]

http://download.yousendit.com/9DDC95AB3F7C450A

To the first one - root (8) is the same as 2 root (2) - understand why?

Which is why 2root(2) is your answer. I don't know where the 11 comes from...

And the second, it's 13^2 + 9^2 = 250

So your answer is root 250

[Muqtabis-unNoor]

yes, it comes out to be radical 8 in the first one.

now tell me, if they tell you to put radical 8 into simplest radical form, what will it be?

but how did -9 squared become 0?

[Islamiyyah]

yes, it comes out to be radical 8 in the first one.

now tell me, if they tell you to put radical 8 into simplest radical form, what will it be?

but how did -9 squared become 0?



Will it be 4?

I dunno, that was what I was trying to figure out, I think I miscalculated?

[Joha]

Will it be 4?

I dunno, that was what I was trying to figure out, I think I miscalculated?

Simplify the stuff in the Brackets.

SqRoot (8) = SqRoot (2*4) = SqRoot(2) * SqRoot(4) = SqRoot(2) * 2 (Because we know what SqRoot(4) is.

[Islamiyyah]

Ah okay, I got it guys. I feel so embarassed it took five pages but alhamdulillah. :jkk: for helping me. You all can rest now, sorry!

[Muqtabis-unNoor]

Ah okay, I got it guys. I feel so embarassed it took five pages but alhamdulillah. :jkk: for helping me. You all can rest now, sorry!

no problem, don't be sorry. if you need help with anything else feel free to ask me.

you live in NYC? which school do you go to?

[Joha]

no problem, don't be sorry. if you need help with anything else feel free to ask me.

you live in NYC? which school do you go to?

ps. do they normally say radical 2 instead of root 2 in the US? just curious...

[Muqtabis-unNoor]

ps. do they normally say radical 2 instead of root 2 in the US? just curious...

they usually say radical 2.

[Joha]

they usually say radical 2.

lol, I can just imagine that, sounds comical...and so longwinded when you're dealing with a root in every line!

[Muqtabis-unNoor]

lol, I can just imagine that, sounds comical...and so longwinded when you're dealing with a root in every line!

now that I think of it, it does sound funny.

I used to think everyone that said root 2 was smart, it just sounded so cool and strange.