3 years ago

Help! math quiz due in 15 mins

Mathematics

2 answers:

slega [8]3 years ago

8 0

Do you still need help?

Sedbober [7]3 years ago

7 0

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SOMEONE PLS HELP ME WITH THIS QUESTION!!! I WILL MARK BRAINLIEST

maksim [4K]

Answer:

The answer is 18% which is F

Step-by-step explanation:

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3 years ago

4(3xy^4)^3/(2x^3y^5)^4

myrzilka [38]

Answer:

$\frac{4\left(3xy^4\right)^3}{\left(2x^3y^5\right)^4}=\frac{27}{4x^9y^8}$

Step-by-step explanation:

Given the expression

$\:\:\frac{4\left(3xy^4\right)^3}{\left(2x^3y^5\right)^4}$

solving the expression

$\:\:\frac{4\left(3xy^4\right)^3}{\left(2x^3y^5\right)^4}=4\cdot \:\frac{\left(3xy^4\right)^3}{\left(2x^3y^5\right)^4}$

$=4\:\frac{27x^3y^{12}}{16x^{12}y^{20}}$

$=4\cdot \frac{3^3}{2^4x^9y^8}$

The multiply fractions are defined as

$\:a\cdot \frac{b}{c}=\frac{a\:\cdot \:b}{c}$

so the expression becomes

$=\frac{3^3\cdot \:4}{2^4x^9y^8}$

$=\frac{3^3\cdot \:2^2}{2^4x^9y^8}$

$=\frac{3^3}{2^2x^9y^8}$

Refining

$=\frac{27}{4x^9y^8}$

Therefore,

$\frac{4\left(3xy^4\right)^3}{\left(2x^3y^5\right)^4}=\frac{27}{4x^9y^8}$

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3 years ago

What must Sara get on her next test to average 80% if her previous test scores were 78, 88, 83, and 81?

Luba_88 [7]

Answer: 70

Explain:

80*5 = 400
this tells us that the total scores before
dividing must be 400

400 - (78+88+83+81) = 70
this tells us that we lack +70

in conclusion, to get an average of 80% on Sara's test scores; She must receive a grading of 70% in her next test.

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4 years ago

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14 years. Would be your answer.

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4 years ago

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Trent has $500 in his savings account. If he spends $25 each week, how much money will he have left after 8 weeks? Explain

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Answer:

300