3 years ago

Denise works for 3 hours and earns 19.50 How much does she earn in one hour?

2 answers:

8 0

Answer: $6.50

Step-by-step explanation:

5 0

Answer:

she earns 6.50 per hour

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Lina20 [59]

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Debora [2.8K]

First, note that $343=7^3.$ Then use the formula for the sum of perfect cubes:

$a^3+b^3=(a+b)(a^2-ab+b^2).$

Therefore,

$x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).$

The quadratic trinomial $x^2-7x+49$ couldn't be factored anymore, so the expression $x^3 + 343$ has two factors $x+7$ and $x^2-7x+49.$

Answer: correct choice is A.

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3 years ago

Ksju [112]

Answer:

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Step-by-step explanation:

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s344n2d4d5 [400]

$(7.2\cdot10^7)^2=7.2^2\cdot(10^7)^2=51.84\cdot10^{14}=\boxed{5.184\cdot10^{15}}=\\
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3 years ago

Irina-Kira [14]

Answer: The Quick shuttle has a greater initial value

Step-by-step explanation:

The We-Drive Shuttle has a initial value of $20 and the Quick Shuttle has an inital value of $30

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