Answer:
X=10, x=4
Step-by-step explanation:
first, divide 14 by 2, and square it; giving you
x^2-14x+(7)^2=-40
Because 7^2 is 49, you have to add 49 to the other side; giving you
x^2-14x+(7)^2=9
Then factor the left side; giving you (x-7)^2=9
Take the square root of both sides, giving you
(x-7)^2= plus or minus 3
Then solve to get two solutions, 10 and 4
Answer: C. 20 inches
Step-by-step explanation:
perimeter= 2 x (4+6)=20 inches
B it is linear Bc it increases constantly. There is a constant slope that doesn’t change
If 30% of his collection is 12 cars, then we can use the fraction
30/12=100/x
x=40