5x + 2y = 15
y = -3x - 2......so sub in -3x - 2 in for y in the other equation
5x + 2(-3x - 2) = 15
5x - 6x - 4 = 15
5x - 6x = 15 + 4
-x = 19
x = -19
y = -3x - 2
y = -3(-19) - 2
y = 57 - 2
y = 55
so ur solution is (-19,55)
Given that the width of the rectangular piccture is:

Where "l" is the length of the picture.
You know that the perimeter is:

The formula for calculating the perimeter of a rectangle is:

Where "l" is the length and "w" is the width.
Therefore, you can substitute the perimeter and the width into the formula, in order to find "l":

Now you can solve for "l":





Hence, the answer is:
Step-by-step explanation:
(3760 + 4500 + 2450 + 3990) ÷ 4 = $3,675
Answer:
63 sq ft
Step-by-step explanation:
The formula for the area of a trapezoid is
A = h(a + b)/2 where a and b are the lengths of the parallel sides and h is the distance between them
A = 7(11 + 7)/2
= 7(18)/2
= 63 sq ft
Answer:
im pretty sure its b
Step-by-step explanation: