Answer:
Step-by-step explanation:
If 2 pounds costs $4, then 1 pound costs $2. That's why the equation is y = 2x and x is the number of pounds you buy. If you buy 2.5 pounds, then the cost is y = 2(2.5) so
y = $5
Answer:
C. (x - 9)(x - 9)
Step-by-step explanation:
x^2 - 18x + 81 is square number of (x-9)^2
Answer:
the exact answer is 1.98
if we rationalize denominator we get root 0f 10 times pi divided by 5
root of 10 is about 3.1 (
) so we have 
≈ 9.6/5 = 1.92
Step-by-step explanation:
= 
Answer:
3) 441 m² (C)
Step-by-step explanation:
the square root of 29² - 20² is = 21 (side length of Q
21 is all of the side lengths since it's a square.
so multiply 21 by itself:
21x21= the area of q= 441 m²
405, 596 is not the answer
