Whats the answer? A, B, C, or D??

D

Step-by-step explanation:

This triangle is a 45-45-90 triangle, which is a special triangle! Ooh! That means we already know that the ratio of its sides is , x, and x, with the legs = x and the hypotenuse = .

We have the hypotenuse as 8, so plug it in:

8 =

8/ = x

Multiply both the top and bottom of that fraction by to get

8 / =

8 / 2 = 4

x = 4, so v and u = 4!

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.