Step-by-step explanation:
(2x³y^-4)^-2 = 1/(4x⁶y^‐8) = y⁸/(4x⁶)
1/(8x⁵y^-7) = y⁷/(8x⁵)
4x^-9y⁴ = 4y⁴/x⁹
so, the whole expression is then
y⁸/(4x⁶) × y⁷/(8x⁵) × 4y⁴/x⁹
4y¹⁹/(32x²⁰) = y¹⁹/(8x²⁰)
so, D is the correct answer.
Answer:
1260cm^2
15 times 12 = 180
180 times 7 = 1260
Answer
$60+1/4c=$147.50
makes $60 a day
1/4 of customer sales= 1/4 c
equal 147.50
so 60+ 1/4 c = 147.50
