(a)

= 400
(b)


(c) Only the positive solution makes sense because you cannot have a negative side length.
(d) Since one side of the painting is 20 inches, all four sides together will be 20*4 = 80 inches
The answer is 33.3 repeating
Answer: -42v + 70
Step-by-step explanation: You’d multiply -7 with the figures in the brackets, then you’d group like terms then subtract -7v from -35v.
1. -35v + 70 - 7v
Negative multiplied by negative is a positive
2. -35v - 7v + 70
Group like terms
3. -42v +70
Subtract
Hope this was helpful
Answer:
Step-by-step explanation:
see picture
when doing questions like these it's all about breaking up the shape into digestible parts