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bixtya [17]
2 years ago
10

I NEED HELP WITH MATH QUESTION PLEASE HELP ME NO LINKS !!!

Mathematics
2 answers:
lukranit [14]2 years ago
6 0

Answer:

21.8

Step-by-step explanation:

1.9 + 9 = 10.9

10.9 x 2 = 21.8

Margarita [4]2 years ago
3 0

Answer:

21.8

Step-by-step explanation:

2×1.9=3.8

2×9=18

total=21.8

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mrs_skeptik [129]

Answer:

<h2>8.72</h2>

Reasoning:

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6 0
3 years ago
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Lena [83]

Answer:

no solution

Step-by-step explanation:

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3 years ago
Which sum will be irrational
ivolga24 [154]
<h2>Hey there! </h2>

<h3>The answer is: </h3>

<h3>Option 'B' </h3>

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5 0
3 years ago
According to the latest survey the mean world lifespan is 68.8 years the university of Oregon wants to see if the average life s
pishuonlain [190]

Answer:

Step-by-step explanation:

We would set up the hypothesis test.

For the null hypothesis,

µ = 68.8

For the alternative hypothesis,

µ ≠ 68.8

This is a two tailed test.

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Degrees of freedom, df = n - 1 = 26 - 1 = 25

t = (x - µ)/(s/√n)

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We would determine the p value using the t test calculator. It becomes

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Since alpha, 0.05 > than the p value, then we would reject the null hypothesis. Therefore, At a 5% level of significance, the sample data showed significant evidence that the average life span of the residence of Oregon differs from the world average.

4 0
3 years ago
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Maru [420]

Answer:

30

Step-by-step explanation:

3 0
3 years ago
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