Let...
l=length
w=width
Because we know that the perimeter is 90, we can make this equation...
2l+2w=90
Because we know that the length is 5 feet less than 4 times the width, we can make this equation...
l=4w-5
We can solve this system through substitution...
2(4w-5)+2w=90
8w-10+2w=90
10w=100
w=10 ft
l=4(10)-5=35 ft
16x^2 -1 = 0
16x^2 = 1
x^2 = 1/16
x= 1/4
Answer:
the answer is a.
Step-by-step explanation:
D) A theorem is a statement of mathematical truth, while a proof is the series of statements that support the theorem’s claims
