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fgiga [73]
3 years ago
9

The total cost y varies directly with the number items x sold. Write a direct variation equation if

Mathematics
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:

xy = 2.35

Step-by-step explanation:

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Evaluate (9^1/2) over (4^-1/2)????
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Using laws of exponents,


9^(1/2) = 34^(-1/2) = (1/4)^(1/2) = 1/2

Therefore,9^(1/2)/(4^(-1/2)) = 3/(1/2) = 6.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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Which applies the power of a product rule to simplify (5 t) cubed?
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Answer:

(5 t ) cubed = 5 cubed . t cubed = 125 t cubed applies the power of a product rule to simplify (5 t) cubed ⇒ 3rd answer

Step-by-step explanation:

Let us revise some rules of exponents

a^{m} × a^{n} = a^{m+n}  

a^{m} ×÷ a^{n} = a^{m-n}

(a^{m})^{n} = a^{m.n}

(a.b)^{m} = a^{m} .  b^{m}

To simplify (5t)^{3}

∵ 5t means 5 × t

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- Use the 4th rule above

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∵ (5)³ = 5 × 5 × 5 = 125

∴ (5t)^{3} = (5)^{3}.(t)^{3} = 125 t³

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