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Answer:
$21.58 or $21.576
Step-by-step explanation:
580 ÷ 100 = 5.8
$10.36 × 5.8 = $60.088
$6.64 × 5.8 = 33.512
60... - 33... = $21.576
D. 3 1/10
They add up to 31 and then you divide them by 10 you get 3.10
2x^3 + 4x^2 - x + 2
——————————
x
Answer: 4/a
Explanation:
(a+1/a)^2 - (a-1/a)^2
= (a^2 + 2a + 1)/a^2 - (a^2 - 2a + 1)/a^2
= (a^2 + 2a + 1 - a^2 + 2a - 1)/a^2
= 4a/a^2
= 4/a