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1 year ago

Barrett is ordering t-shirts for his school's student council. Company D charges a

Mathematics

1 answer:

stiv31 [10]1 year ago

5 0

Answer:

A. 6.25x + 30 > 9.75x+12

Step-by-step explanation:

This is because we know from the problem that x is the minimum number of t-shirts. We also know Company D charges a 6.25 fee for each tee, while Company E charges a 9.75 fee per tee. Based on the information we know, we can choose the problem.

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Chapter 11 assesment guide 5th grade

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2 years ago

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7x + y = 13<br> 4x – 4y = -20

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Answer: (x,y) = (1,6)

Step-by-step explanation:

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2 years ago

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-4.67 + (5.24 – <br> ) – (<br> + 7.98) = 13.26

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1 year ago

Write the following equation in standard form: y + 4 = -3(x + 2)

Irina18 [472]

Answer:

-3x-y=10

Step-by-step explanation:

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3 years ago

A medical researcher needs 37 people to test the effectiveness of an experimental drug. If 101 people have volunteered for the t

Rashid [163]

Answer:

The number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!\cdot (n-k)!}$

Compute the number of ways to select 37 people from 101 as follows:

${101\choose 37}=\frac{101!}{37!\cdot (101-37)!}$

$=\frac{101!}{37!\times 64!}\\\\=\frac{101\times 100\times 99\times....64!}{37!\times 64!}\\\\=5397234129638871133346507775$

Thus, the number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

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2 years ago