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almond37 [142]
2 years ago
15

What is three -fifths of thirty

Mathematics
2 answers:
Umnica [9.8K]2 years ago
3 0
The answer is 18. 30 divided by 5 is 6. so 3 times 6 is 18.
valkas [14]2 years ago
3 0
What is three-fifths of thirty?
well we can look at this way easier by setting them both up with fractions
and since we don't know the numerator (the top number) for thirty we just put x in its place:) 
  3        x
-----    -----
  5       30

all we need to do is figure out what we multiplied by 5 to get 30
well lets just divide 30 by 5 ...
30 ÷ 5 = 6
so that means that we multiplied 6 to get 30 
in order to get x we do the same to the top number of 3/5 so (3)
3 x 6 = 18 and thats what equals x!
so 3/5s of 30 is 18!
Answer = 18   

hope this helps!
and dont forget to 
MARK ME BRAINLIEST! :D

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I need help on 4, 5, and 6.
Ahat [919]

Answers and Explanations:

4. They do not have a proportional relationship. For the first 3 sets, you can multiply x by 2.5 to get y. But that does not work for 8 and 18, so there is no proportional relationship between x and y.

5. Yes. For equilateral triangles, the side length is equal to the perimeter divided by 3, the number of sides. Vise versa, the side length times 3 equals the perimeter. If the side length is 3 in, multiply by 3 to get 9 in, the diameter.

6. Yes. it is proportional. X times 80 equals Y. In this case, in 8 hours, 640 tickets were sold.

<em>I hope these help! Feel free to give me Brainliest, if you thought the explanations helped your understanding. :)</em>

6 0
3 years ago
The probability that Josslyn is on time for a given class is 99 percent. If there are 32 classes during the semester, what is th
Gre4nikov [31]

Answer:

The best estimate is 32 out of 32 times, she will be early to class

Step-by-step explanation:

The probability of being early is 99% = 99/100 = 0.99

So out of 32 classes, the best estimate for the number of times she will be early to class will be;

0.99 * 32 = 31.68

To the nearest integer = 32

4 0
2 years ago
What is the solution to the system of equations<br><br> y=2x-3.5<br><br> x-2y=-14
PIT_PIT [208]
Y-2x=-3.5
x-2y=-14
then multiply the first term by 2
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then sum them
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x=-7
y=3.5
5 0
3 years ago
How do you Evaluate the expression when =x−7 and =y2 .<br> 7y-x
telo118 [61]
You said x=-7 and Y=2? if so then 7(2)--7= 21
5 0
2 years ago
For homework Brooke has 15 math problem son social study problems and 5 science problems she has 29 problems in all use mental m
Harlamova29_29 [7]

Answer:

Brooke has 9 problems for social studies.

Step-by-step explanation:

I used addition. I did 15 + 5 = 20. and after that I just knew that you have to add 9 to 20 to get 29, so I figured out that she has 9 social studies problems.

8 0
3 years ago
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