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polet [3.4K]
3 years ago
11

26) One third of the students earned an A on the test. If 9 of the students earned an A, how many students are there in total?

Mathematics
2 answers:
Roman55 [17]3 years ago
7 0
There would be 27 students in total. You can find this by knowing that since 9 students got an a, and they make up 1/3 of the class, you should do 9(3) and that will give you 27. I hope I was able to help you understand better!
Lilit [14]3 years ago
4 0

Answer:

27

Step-by-step explanation:

9 students = 1/3, 9 students = 1/2, 9 students = 1/3 so 9 x 3 =27

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The lengths of three sides of a triangle are in the ratio 3 : 4 : 5. The perimeter of the triangle is 156 centimeters. What is t
julsineya [31]

3x + 4x + 5x = 156

12x = 156

x = 13

3*13 = 39

5*13 = 65

65-39=26 cm difference

6 0
3 years ago
Kimberly uses 6.7 pints of blue paint in white paint to paint her bedroom walls 3/5 of this amount is blue paint and the rest is
Elodia [21]

Answer:

  2.68 pints

Step-by-step explanation:

The fraction of white paint is 1 -3/5 = 2/5, so the quantity of white paint is ...

  (2/5)(6.7 pints) = 2.68 pints

Kimberly used 2.68 pints of white paint.

5 0
3 years ago
7 - 7(-8 + x) = -14 + 4x How do you solve for x
Lelu [443]
First thing you need to do is distributive property and that will give you
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7 0
3 years ago
Read 2 more answers
Akram is 20 year old and his sister shazia is 15
mash [69]

Answer:

1) akram : shazia

20-4 : 15-4

16 : 11

2) akram : shazia

20 + 5 : 15 + 5

25 : 20

5 : 4

3) ratios are not always constant

7 0
3 years ago
Please help! Please show all work! Thx!
OverLord2011 [107]

Answer:

Part A)

86=2(x+22)

Part B)

l=26\text{ cm}

Step-by-step explanation:

We know that the rectangle has a length of (x+5) and a width of 12 cm.

Part A)

Remember the formula for the perimeter of a rectangle:

P=2(l+w)

We know that the perimeter is 86. Substitute that for P:

86=2(l+w)

Substitute (x+5) for the length l and 17 for w. So:

86=2((x+5)+17)

We can simplify this to acquire our equation:

86=2(x+22)

Part B)

To find the length, let's find our x first. We have the equation:

86=2(x+22)

Divide both sides by 2:

43=x+22

Now, subtract 22 from both sides. Therefore, our x is:

x=21

To find the length, remember that the length is:

l=x+5

Since we now know the value of x, substitute 21 for x:

l=21+5

Add:

l=26\text{ cm}

So, the length is 26 centimeters.

And we're done!

4 0
3 years ago
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