What is Y=2x-1 and Y=3x+2

{y,x} = {-7,-3}

Step-by-step explanation:

- 3x = 2

  y - 2x = -1

-3x + y = 2        -2x + y = -1  

y = 2x - 1

(2x-1) - 3x = 2

    - x = 3   x = - 3

y = 2x-1

   x = -3

y = 2(-3)-1 = -7

answer: the value of x is 7cm

step-by-step explanation:

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.