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Ivahew [28]
3 years ago
6

There were 25 problems in Mark's test. 92% of the problems he answered correctly. How many wrong answers were in Mark's test?

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0

Answer:

2 incorrect answers

Step-by-step explanation:

If you take the percentage correct, you will notice its a particularly high score for the amount of questions. In this case, instead of using a really long theorem, its much simpler to just input numbers.

To find your score on a test out of 100%, you take your amount correct and divide it by the total number of questions, then multiply by 100.

If you take 24/25, you get 0.96, which if multiplied 100*0.96=96%

Now its simple, just go 23/25 to get 0.92, multiplied 100*0.92=92% correct, 25-23=2 so the amount of incorrect answers would be 2.

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I honestly don’t know what interest is can u please explain what it is??
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3 years ago
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is
s344n2d4d5 [400]

The statement; Approximately 120 families turned on their televisions for less than 37 hours is true.

<h3>What is true about the data?</h3>

From the task content, since the 10% percentile of the data corresponds to 24 families, it.follws that the total number of families sampled is; 24 × 10 = 240 families.

On this note, after the first 120 data points, the median is determined to be 33.2 hours which is less than the mean. Conclusively, it follows that approximately 120 families turned on their televisions for less than 37 hours.

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6 0
2 years ago
What is 7 1/2 divided by 1 1/2 ?
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Answer:

5

Hope it helpz~ uh..

Have a great day ahead..

6 0
2 years ago
In physics class, Carrie learns that a force, G, is equal to the mass of an object, m, times its acceleration, a. She writes the
wlad13 [49]

Your problem statement is missing the formula Carrie came up with. It should be The one she started with, divided by m.

... G/m = a

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_____

The unit of newtons is abbreviated N.

1 N = 1 kg·m/s² so dividing by kilograms leaves units of m/s², which are the units of acceleration.

Very likely, your question is not concerned with the units, just the number: 2.2. It's a straight division problem, easily handled by hand, by calculator, or in your head (after you realize 7.92 = 7.2×1.1 = 2×3.6×1.1).

6 0
3 years ago
Read 2 more answers
Can anybody explain how I answer this question I really don't get trig equations ​
nasty-shy [4]

SinØ(TanØ+2)=3cosØ -----[pulling like terms out]

for the following steps The easiest 4 me is that I just plug in values between 0° and 180° for Ø and see which will help me to get equal numbers on both sides.

So, for instance if you use Ø=90°, you'll get the following, Sin90(Tan90+2)=3cos90

========> 1(1+2)=3(1) ==> 3=3

so 90° is one of the solutions ur looking for.

hope this was helpful

6 0
3 years ago
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