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2 years ago

3(5x+2y) without parentheses.I would love help on this question

Mathematics

2 answers:

Nady [450]2 years ago

6 0

Answer:

15x+6y

Step-by-step explanation

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Lady_Fox [76]2 years ago

3 0

Answer:15x+6y

Step-by-step explanation:3x5 and 3x6

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ioda

Answer:

Step-by-step explanation:

4 hours × (¼ in)/hour = 1 in

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Total snowfall over ten hours = 1 + 3 = 4 in

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2 years ago

What is the answer to m^7 · m^−3?

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M^4

Step-by-step explanation:

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2 years ago

99 pencils cost \$7.74$7.74dollar sign, 7, point, 74. Which equation would help determine the cost of 666 pencils? Choose 1 answ

balu736 [363]

Answer:

$\large \boxed{\text{A) } \dfrac{6}{x} = \dfrac{9}{\$7.74}}$

Step-by-step explanation:

9 pencils cost $7.74

6 pencils cost x

The ratios are

$\dfrac{9}{6} = \dfrac{\$7.74}{x}$

According to the alternendo property,

$\dfrac{9}{6} = \dfrac{\$7.74}{x} \Rightarrow \dfrac{9}{\$7.74} = \dfrac{6}{x}\\\\\text{The correct answer is $\large \boxed{\mathbf{ \dfrac{6}{x} = \dfrac{9}{\$7.74}}}$}$

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2 years ago

Find the value of x and y. This has to do with geometry

Ray Of Light [21]

Answer:

x = 30°

y = 30°

Step-by-step explanation:

By inscribed angle theorem:

$x = y = \frac{1}{2} \times 60 \degree \\ \\ x = y = 30 \degree$

4 0

2 years ago

A simple random sample of size nequals40 is drawn from a population. The sample mean is found to be 103.9, and the sample stand

yan [13]

Answer:

There is enough evidence to support the claim that the population mean is greater than 100

Step-by-step explanation:

Step 1: We state the hypothesis and identify the claim

$H_0:\mu=100$ and $H_1:\mu \:>\:100$ (claim)

Step 2: Calculate the test value.

$t=\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$

$\implies t=\frac{103.9-100}{\frac{21.9}{\sqrt{40} } }=1.1263$

Step 3: Find the P-value. The p-value obtained from a calculator is using d.f=39 and test-value 1.126 is 0.134

Step 4: We fail to reject the null hypothesis since P-value is greater that the alpha level. (0.134>0.05).

Step 5: There is enough evidence to support the claim that the population mean is greater than 100.

Alternatively: We could also calculate the critical value to obtain +1.685 for $\alpha=0.05$ and d.f=39 and compare to the test-value:

The critical value (1.685>1.126) falls in the non-rejection region. See attachment.

NB: The t- distribution must be used because the population standard deviation is not known.

5 0

3 years ago

3(5x+2y) without parentheses.I would love help on this question​

3(5x+2y) without parentheses.I would love help on this question