3 years ago

Straws are sold in packs and boxes

Mathematics

1 answer:

Alex17521 [72]3 years ago

7 0

15p+48b=total straws

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Write the worlds as an algebraic expression. the width plus twelve. how do i do it?

Contact [7]

Answer: X + 12

Reason/Explanation:
It's asking us to write the words as an algebraic expression. "The width plus twelve." For starters, we don't know what the width is, so we use a variable, X. Now we add 12. So we use X + 12. The width is X, plus twelve.

-DustinBR

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3 years ago

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A survey of 102 high school students on the amount of money they spend on prom yields an average of $893. Assuming the populatio

Mnenie [13.5K]

Answer:

Margin of error $=E=[69]$

Step-by-step explanation:

Data provided in the question:

$\bar{x}=\$\ 893$

$\sigma=\$\ 450$

$n=102$

At $88 \%$ confidence level the $z$ is.

$\alpha=1-88 \%=1-0.88=0.12$

$\frac{\alpha}{2}=\frac{0.12}{2}=0.06$

$z_{\frac \alpha 2}=20.06=1.555$

$\text { Margin of error }=E=Z_{\frac \alpha 2} \times \frac{\sigma}{\sqrt{n}}$

$E=1.555 \times \frac{450}{\sqrt{102}}$

Margin of error $=E=[69]$

7 0

3 years ago

Dividing my dog’s age by 4 and adding 6 is the same as dividing my dog’s age by 8 and adding 8.

sergiy2304 [10]

Answer:

Step-by-step explanation:

a = age

$\frac{a}{4} + 6 = \frac{a}{8} + 8$
you will multiply by 8 now
$2a + 48 = a + 64$
now move a's with a's and the numbers that don't have a variable with each other
$2a - a = 64 - 48$
now subtract
$a = 16$
I hope it helps you!