Answer:
4
Step-by-step explanation:
2 × 2 = 4
(48.15 - 45) / 45 = 3.15 / 45 = 0.07 = 7% <== rate of sales tax
The Answer should be C) 40.5 feet
There is only one solution to the equation. A quadratic equation has 2 solutions a positive and a negative, but since we are looking for length, the answer can only be postive. Area= side^2
400= x^2
sqrt(400)=x
20 inches = x
The length of one side is 20 inches
check: 20*20 = 400, which is the area of the square painting.