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s344n2d4d5 [400]
2 years ago
9

A school has all of the students in grade 8 take a math test. Several samples are taken from the results. Which of the following

samples is NOT likely to produce a representative sample of the population?
Mathematics
1 answer:
gayaneshka [121]2 years ago
4 0
917.8
step by step
sisbeuejebusnanakaiajrbrv
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Teresa, Eric, and Ryan sent a total of 99 text messages over their cell phones during the weekend. Eric sent 3 times as
faust18 [17]

I'll use t for the messages Teresa sent, e for messages Eric sent, and r for messages Ryan sent.

Therefore we have, t+e+r=99.

From the text we also know:

e=3r ; r=t+6

If we substitute in the original equation we get:

t+3(t+6)+t+6=99; By simplifying it we get

5t=75 , therefore t=75/5=15.

Since Teresa send 15 messages,Ryan sent 6 more then here, so he send 21. Eric sent three times the

messages Ryan sent so he sent 63 messages. If we add them together 15+21+63, we get the total of 99 messages.

8 0
3 years ago
How do I write an equation that would allow someone to find the value of R
Ivahew [28]

Answer:

R+239=3501

Step-by-step explanation:

Add the three 1,167 values together and you get 3,501. Then, because we know a portion of the three blocks is equal to 239, add it so when we solve for R, 239 is subtracted from the total.

As for solving it,

Subtract 239 on both sides, and R is 3501-239 = <u>3262</u>

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3 years ago
7. There are approximately 1.2 x 108 households
Vikentia [17]

Answer:

the answer would be 35

Step-by-step explanation:

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Step-by-step explanation:

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When asked their favorite color, 9 students said blue, 14 students said orange, 6 students said red, and 2 students said green.
Vitek1552 [10]
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