3 years ago

Which expression is equivalent to 6a + 15? A. 6(a + 5) B. 3(2a + 5) C. 3(3a + 12) D. 6(a + 12) PLEASE HELP :)

2 answers:

4 0

The answer is B

A. 6(a+5)
=6a+30 not equivalent to 6a+15
B.3(2a+5)
=6a+15 is equivalent
C.3(3a+12)
=9a+36 not equivalent
D.6(a+12)
=6a+72 not equivalent

So your answer is B

astraxan [27]3 years ago

3 0

Answer:

the answer is B im on the exam as well .

Step-by-step explanation:

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On day two of a study on body temperatures, 106 temperatures were taken. Suppose that we only have the first 10 temperatures to

Hitman42 [59]

Answer:

The 95% confidence interval = (98.225, 98.655)

Step-by-step explanation:

The formula for Confidence Interval =

Mean ± z × standard deviation/√n

Where Mean = 98.44°F

Standard deviation = 0.30°F

n = number of samples is 10

Because our number if samples is small, we use the t score confidence interval formula

Mean ± t × standard deviation/√n

Degrees of Freedom = n - 1

= 10 - 1 = 9

We find the t score of 95% confidence interval and degrees of freedom 9

= 2.262

Hence,

Confidence interval = 98.44 ± 2.262 × 0.30/√10

= 98.44 ± 0.214592162

Confidence Interval

98.44 - 0.214592162

= 98.225407838

≈ 98.225

98.44 + 0.214592162

= 98.654592162

≈ 98.655

The 95% confidence interval = (98.225, 98.655)

5 0

3 years ago

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ch4aika [34]

Answer:

162-x=180

x=342

Step-by-step explanation:

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2 years ago

Read 2 more answers

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rosijanka [135]

Answer:

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2 years ago

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SCORPION-xisa [38]

Answer:

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Explanation:

I’m pretty sure it’s right hope it helps

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3 years ago

How do you write 1.25 as a fraction or mixed number in simplest form

amm1812

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2 years ago