Answer:
a= 12
Step-by-step explanation:
(1/4)*a = 3 // - 3
(1/4)*a-3 = 0
1/4*a-3 = 0 // + 3
1/4*a = 3 // : 1/4
a = 3/1/4
a = 12
Answer:
Let the Width(W) = X cm
then the length(L)= (2+X)cm
Perimeter(P)= 60cm
P =L+W
L+W =P
(2+X)cm +X cm = 60 cm
2X+2=60
2X=60-2
2X=58
dividing both sides by 2
X=29cm
Width =X
Width =29cm
the width is 29cm
Length= (2+X)cm
= (2+29)cm
= 31cm
the length is 31cm
The answer will be B, you got the slope right but you got the intercept wrong. The y-intercept is always the constant.

To solve the given system of equations for substitution you:
1. Solve in one of the equations a variable.
For the given options the one that is correct is solve the first equation for y, by adding x to both sides:
H=k/t where k is the constant of proportionality
2=k/70
k=140