To complete the square you need to halve the linear coefficient -4/2, square it, 4, and add that value, giving you:
x^2-4x+4 and that is a perfect square equal to:
(x-2)^2
Answer:
$9.33
Step-by-step explanation:
quarter = 25 cents
dime = 10 cents
nickel = 5 cents
penny = 1 cent
31 (0.25) = 7.75
13 (0.10) = `1.30
5 (0.05) = 0.25
3(0.01) = 0.03
7.75 + 1.30 + 0.25 + 0.03 = 9.33
I think the first step is to distribute the answers.
21 × 10 = 210
210 ÷ 55 = 3.82
3.82 ÷ 10 =0.382
Area = 7.4 cm^2 not sure tho