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uysha [10]
3 years ago
13

a history teacher is writing a test worth 100 points. She uses multiple-choice questions worth 6 points each and true/false ques

tions worth 2 points each. She wants the test to have three times as many multiple-choice questions as true/false questions. Let m represent the number of multiple-choice questions on the test, and let t represent the number of true/false questions. Which system of equations can be used to find how many of each type of question she should write.
Mathematics
1 answer:
BartSMP [9]3 years ago
3 0

Answer:

6m + 2t = 100

AND

m=3t

solution t=5 m=15

Step-by-step explanation:

6m + 2t = 100 as each m question gives 6 points and each t question gives 2

m=3t as m questions are 3 times t questions

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How would the mean change if the number 52 replaced the number 12 in the set?
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Answer:

increase

Step-by-step explanation:

First, we need to find the mean of the given data set without any change.

10 + 61 + 10 + 44 + 21 + 79 + 27 + 12 = 264

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Now that we have the mean, we can find the mean of the data set with the change of 52.

10 + 61 + 10 + 44 + 21 + 79 + 27 + 52 = 304

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<u />

From this, we can see that the mean has increased with the change of 12 to 52. Thus, that's the correct option.

hope this helps!

6 0
2 years ago
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8 0
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Step-by-step explanation:

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Answer:

hi guada!

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4 0
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1

Step-by-step explanation:

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