I need 10th grade math help

- anonymous

I need 10th grade math help

- katieb

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- anonymous

okay...? Anything in particular?

- anonymous

ABCD is a rectangle. Find the length of each diagonal.
AC=2(x-3)
BD=x+5

- Vocaloid

AC and BD are the diagonals, and diagonals of a rectangle are equal to each other
2(x-3) = x + 5
the first step is to solve for x, can you do that for me please?

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## More answers

- anonymous

How do I do that

- Vocaloid

first, look at the left side of the equation
2(x-3)
distribute the 2 and tell me what you get

- anonymous

2x

- Vocaloid

not quite, try again
hint: A(B-C) = A*B - A*C

- anonymous

2x-6

- Vocaloid

right! so the left side of the equation is
2x - 6
and the right side of the equation is
x + 5
2x - 6 = x + 5
can you try solving for x now?

- anonymous

Do I subtract 6 to each side

- anonymous

Or 5

- Vocaloid

add 6 to both sides, since we have -6 on the left side and we want to get rid of it

- anonymous

2x=x+11 right?

- Vocaloid

right, now subtract x from each side

- anonymous

X=11?

- Vocaloid

right, x = 11, only one more step to go!
let's use the equation from before,
BD=x+5
if x = 11, what is x + 5?

- anonymous

16?

- Vocaloid

great! that's our answer

- anonymous

Thank you! Could you help me with a few more?

- Vocaloid

sure

- anonymous

how do I upload a pic on hete

- Vocaloid

"attach file"

- anonymous

Where is that

- Vocaloid

right under the box where you type stuff in

- anonymous

I'm on mobile I do not see it

- Vocaloid

Ah, I'm not familiar with the mobile site
@pooja195 perhaps you can help?

- anonymous

Is that person online

- pooja195

i dont use the mobile site o-o @paki @sleepyhead314

- anonymous

Are they online

- sleepyhead314

just a sec ^_^

- jigglypuff314

Here, can you see this? There is a camera icon and paper clip button for you to attach pictures with :)

##### 1 Attachment

- anonymous

I don't have that?

- anonymous

??

- sleepyhead314

uh oh
which iphone are you using? (or itouch?)
or have you updated the app recently?

- anonymous

Do I have to be using the app I'm on the internet but I can get the app I'm on the IPhone 5s

- sleepyhead314

ohhh yes!
using the App would allow you to attach files :)

- anonymous

I'm getting it

- anonymous

I'm on the app now can you help me with a problem

- sleepyhead314

sure ^_^

- anonymous

- anonymous

Ok here's the pic

- sleepyhead314

I suggest attaching the pic with the app
then going back to the in browser (because the app is still a little slow)

- anonymous

Find the value of Y.
Angle 1=3y+6

##### 1 Attachment

- sleepyhead314

interior angle of a square is 90 degrees
3y + 6 = 90

- anonymous

Is the answer 90?

- sleepyhead314

not quite :)
we have to solve for "Y"
when given 3y + 6 = 90
you would first subtract 6 from both sides

- anonymous

Or is it 28

- sleepyhead314

that's correct :)

- anonymous

Could you help me with a couple more

- sleepyhead314

of course

- anonymous

Find the measure of Angle 2

##### 1 Attachment

- sleepyhead314

assuming this is a parallelogram?

- anonymous

Yes

- sleepyhead314

just a parallelogram or square rhomus kite?
does it say anything else? :3

- anonymous

It doesn't say but the topic is Special Parallelograms

- sleepyhead314

ohhhh then it should definitely be a ... rhombus or something
and the diagonals of a rhombus always bisect at 90 degree angles
so if it really is a rhombus, then it should be 90 degrees ^_^

- anonymous

The answer is 90?

- sleepyhead314

I believe so, if there is no other information given

- anonymous

It was right

- anonymous

Find the measure of angle 2

##### 1 Attachment

- anonymous

Forget the pic I just sent can you help with this one?
RT=2x+4
SW=6x-20

##### 1 Attachment

- sleepyhead314

diagonals in a rectangle are equal to each other
so 2x + 4 = 6x - 20

- anonymous

Add 6??

- sleepyhead314

subtract 2x from both sides

- anonymous

So 4=4x-20?

- sleepyhead314

that's right! :)
great job
now add 20 to both sides

- anonymous

24=4x

- sleepyhead314

then divide both sides by 4

- anonymous

X=6 ??

- sleepyhead314

mhmm

- anonymous

Find the measure of angle 1

##### 1 Attachment

- sleepyhead314

assuming angle 1 equals angle 2
there are 360 degrees in a quadrilateral
360 = 2*104 + 2*(2[angle 1])
360 = 208 + 4 [angle 1]
now subtract 208 from both sides

- anonymous

152=4?

- anonymous

Divide by 4

- anonymous

38??

- sleepyhead314

that's what I got :)

- anonymous

So it's right

- anonymous

RZ=30
SW=5x-20

##### 1 Attachment

- sleepyhead314

2(RZ) = (SW)
2(30) = 5x - 20

- anonymous

Is the answer 16

- sleepyhead314

yup

- anonymous

It was wrong

- anonymous

Find the measure of angle 4

##### 1 Attachment

- sleepyhead314

it was wrong and yet you still ask me? xD
perhaps you should try opening a new question to get someone to help you
I'm not actually good at these :-/

- anonymous

You've been getting them all right though

- sleepyhead314

what I'm saying is
idk how to do this one, sorry o-o

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