3 years ago

Helps me solve this problem please

Mathematics

1 answer:

user100 [1]3 years ago

5 0

Answer:

i think it b or d

Step-by-step explanation:

hope it helps!

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The question says 5k+6k+4k=90. What does k equal?

alina1380 [7]

$5k+6k+4k=90 \\ \\ 15k = 90 \ / \ simplify \\ \\ k = \frac{90}{15} \ / \ divide \ each \ side \ by \ 15 \\ \\ k = 6 \ / \ simplify \\ \\$

The final result is, k = 6.

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3 years ago

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Luden [163]

no because you are not distributing numbers that multiply with each other and form new expressions

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Bas_tet [7]

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Mila [183]

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juin [17]

Answer:

Standard deviation 46.3

Step-by-step explanation:

A 28% of the distribution is equivalent to a z score of -0.5828, you can use a z table to find that.

Z score is calculated as follows:

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x is the number being evaluated

μ is the mean

σ is the standard deviation

And it is used to calculate how many standard deviations you are from the mean of the sample.

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4 years ago