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Maslowich
3 years ago
8

A test is worth 60 points. Multiple-choice questions are worth 2 points, and

Mathematics
1 answer:
Effectus [21]3 years ago
7 0

Answer:

C. The number of multiple-choice questions plus the number of

short-answer questions is 15.

Step-by-step explanation:

This question can be solved using a system of equations.

I am going to say that:

x is the number of multiple-choice questions

y is the number of short-answer questions.

Multiple-choice questions are worth 2 points, and short-answer questions are worth 5 points.

This means that:

2x + 5y = 60

The test has 15 questions.

This means that:

x + y = 15.

Which means that option C is the correct answer.

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8 0
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For an experiment, the temperature of a liquid must stay above 60°F . The starting temperature of the liquid is 90°F . It is pla
HACTEHA [7]
The answer is <span>The liquid must be in the cooler fewer than 10 minutes.
</span>
Let:
m - the number of minutes the liquid is in the cooler.
a - the starting temperature
The function is:
f(m) = a - 3 * m     (Since the temperature decreases by 3°F each minute m, it has a negative sign)
Let:
m - <span>the number of minutes the liquid is in the cooler.
a - the starting temperature
</span>a = 90<span>°F 
</span>
<span>The temperature of a liquid must stay above 60°F:
f(m) > 60

Thus:
</span>f(m) = a - 3 * m 
f(m) > 60

a - 3 * m > 60
90 - 3m > 60
90 - 60 > 3m
30 > 3 m
30/3 > m
10 > m
Or m < 10. So the correct answer is The liquid must be in the cooler fewer than 10 minutes.
3 0
3 years ago
I will mark you brainiest if you can answer this
Anettt [7]

Answer:

slope- 40

y-intercept- 10

slope-intercept form- y=40x+10

Step-by-step explanation:

hope this helps :)

6 0
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