Solve For A
-40+10a = -70

-40 + 10a = -70

Add 40 to both sides:

10a = -30

Divide both sides by 10:

A = -3

a = -3

Step-by-step explanation:

-40+10a = -70

Add 40 to each side

-40+40+10a = -70+40

10a = -30

Divide each side by 10

10a/10 = -30/10

a = -3

40 minutes

step-by-step explanation:

add the time and multiply by 2

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,