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sukhopar [10]
3 years ago
7

Three students failed their last test. If 12% of the class failed, how many students are in the class?

Mathematics
2 answers:
mario62 [17]3 years ago
8 0

Answer:

25 students.

Step-by-step explanation:

12% is 3 students.

100% is the number of students in the class.

3 times 100 divided by 12 is 25.

So there are 25 students in the class.

stellarik [79]3 years ago
3 0

Answer:

There are 25 students in the class.

Step-by-step explanation:

Let x be the number of students in the class

12% failed and the number of students is 3

x*12% = 3

x*.12 = 3

Divide each side by .12

x * .12 /.12 = 3/.12

x =25

There are 25 students in the class

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Step 3: 2.75                    Get the amount that will be discounted
Step 4: 10.99 - 2.75        Subtract the total cost by the discount.
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4 0
3 years ago
3-74. Mentally calculate the following products. Use the rule for decimal multiplication to write an equation in
dalvyx [7]
B. -.0006

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8 0
3 years ago
I could use a little help with this one. i'm rusty.<br> -3(x+2)-7 = 5x + 7
Pie

Answer:

-3(x+2)-7 = 5x + 7

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7 0
3 years ago
Read 2 more answers
3x + 17 + 5x = 7x + 10
Sphinxa [80]

Answer: x=-3

Step-by-step explanation:

First you add 3x+5x cause they are both variables.They equal 8x.

Then you subtract 7x from both sides to get x+17=10

then you subtract 17 from both sides.

you will get x= -3

Hope that helps!

5 0
3 years ago
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A used bookstore sells hardback books and paperback books.A hardback book costs $11, including tax.A paperback book costs $5, in
Ket [755]

Answer:

D.5

Step-by-step explanation:

You can write the following equations from the information given:

y=x+3 (1)

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y is the number of paperback books

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According to this, the answer is that Jamal bought 5 paperback books.

6 0
3 years ago
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