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Helga [31]
3 years ago
7

A student earned a grade of 80% on a math test that had 20 problems . How many did he get right?

Mathematics
2 answers:
JulijaS [17]3 years ago
7 0
80/100·20=8/10·20=8·2=16 (problems he got right)

<em>Answer:16</em>
shutvik [7]3 years ago
6 0
Multiply 80 and 20 and divide by 100 and get answer of 16.
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Someone please help! Thxx
tangare [24]

Answer:

E, needs more info to be determined

Step-by-step explanation:

We know that Kai takes 30 minutes round-trip to get to his school.

One way is uphill and the other is downhill.

He travels twice as fast downhill than uphill.

This means that uphill accounts for 20 minutes of the round-trip and downhill accounts for 10 minutes of his trip.

However, even with this information, we do not know how far his school is.

In order to figure out how far away his school is, we would need more information about the speed at which Kai is traveling.

Simply knowing that he travels twice as fast downhill is not enough.

This question could only be solved by knowing how many miles Kai travels uphill or downhill in a given time.

3 0
3 years ago
How many cups of flour are needed if we increase the recipe by 50%?
TEA [102]

Answer:it is 2

Step-by-step explanation:

4 0
3 years ago
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the probability that a new microwave oven will stop working in less than 2 years is 0.05. the probability that a new microwave o
GrogVix [38]
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5 0
3 years ago
Find the slope of the line passing through the points (-5, 3) and (7,9).
dybincka [34]

Answer:

\huge\boxed{slope=\dfrac{1}{2}=0.5}

Step-by-step explanation:

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points

(-5;\ 3)\to x_1=-5;\ y_1=3\\(7;\ 9)\to x_2=7;\ y_2=9

Substitute:

m=\dfrac{9-3}{7-(-5)}=\dfrac{6}{7+5}=\dfrac{6}{12}=\dfrac{6:6}{12:6}=\dfrac{1}{2}

5 0
3 years ago
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Viefleur [7K]

Answer:

2w - y = 7w - 2

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-5w = -2 + y

w = -(y -2)/5

3 0
3 years ago
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