Question

Which of the triangles are right triangles?

Answer 1

try using the Pythagorean theorem on each on :)
a^2 + b^2 = c^2
if you get something like 3=3 then it IS a right triangle
if you get something like 0=3 (not a true statement) then it is NOT a right triangle

Answer 2

do u have time for more?

Answer 3

sure

Answer 4

Solve for x.

Answer 5

from...?

Answer 6

the longer way of doing this is to multiply both sides by 2
so you get 2*(2/x) = 6
then multiply both sides by x
so you get 2*2 = 6*x
can you solve for x from there? :)

Answer 7

so would it be 2/3?

Answer 8

yes :)

Answer 9

thank you ^.^

Answer 10

and i need to find x again

Answer 11

same idea ^_^
multiply both sides by 3
then multiply both sides by 8

Answer 12

8/15
1 7/8
4 4/5

Answer 13

so the first one /.\

Answer 14

hmmm not quite ^_^
it seems to be a little upside down? .-.

8*x = 3*5

Answer 15

Find the ratio of x to y.

Answer 16

so the second one cx

Answer 17

yah :)

Answer 18

now this one is a little more complicated, you just have to take it apart a little by little :)

x 2
- = --
5 3

try solving for x from there

Answer 19

the 1st one

Answer 20

*blinks* what first one? :P