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Stels [109]
2 years ago
11

If the ratio of boys to girls in a school is 2:3, how many boys are there in the school if there are 120 girls?

Mathematics
2 answers:
Alona [7]2 years ago
6 0

Answer:

80

Step-by-step explanation:

120 divided by 3 is 40. 40 multiplied by 2 is 80.

astraxan [27]2 years ago
5 0

Answer:

there are 80 boys

Step-by-step explanation:

1/3 of 120 is 40 so if the ratio is 2:3 then we multiply 40 by 2 to get 80

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<img src="https://tex.z-dn.net/?f=9%20%5Cfrac%7B9%7D%7B10%7D%20%20%2B%202%20%5Cfrac%7B1%7D%7B4%7D%20%20%3D%20%20%5C%5C%20%206%20
frez [133]

Answer:

1. 445\frac{1}{2}

2. -1\frac{1}{12}

3. 2\frac{11}{30}

Step-by-step explanation:

1. 9\frac{9}{10} +2\frac{1}{4}

I like to make it an improper fraction first.

\frac{99}{10}+\frac{9}{4}

Now take the LCM. The LCM is 20.

\frac{198}{20} +\frac{45}{20}

Now add them.

\frac{8910}{20}

Make this into a mixed number.

445\frac{1}{2}

That's your answer for number 1.

2. 6\frac{1}{4} -7\frac{1}{3}

Do the same thing as the previous addition problem but subtract instead.

\frac{25}{4} -\frac{22}{3}

\frac{75}{12} -\frac{88}{12}

-\frac{13}{12}=-1\frac{1}{12}

-1\frac{1}{12} is your answer for number 2.

3. 8\frac{2}{3}-6\frac{3}{10}

\frac{26}{3} -\frac{63}{10}

\frac{260}{30}-\frac{189}{30}

\frac{71}{30}=2\frac{11}{30}

2\frac{11}{30} is your answer for number 3.

I hope this helps! Let me know if you need help or if I got anything wrong :)

5 0
3 years ago
THIS IS MY 6TH TIME POSTING THIS HELP
Alenkasestr [34]

Answer:

14 yards

Step-by-step explanation:

length of basketball court=

7 inches

(times by 2.8) 2.5 inches-5 yards( times by 2.8)

7 inches=14

i hope i helped:)

3 0
3 years ago
What is the answer to <br> 1/4[2-5x+6]
Citrus2011 [14]

Answer:

Step-by-step explanation:

(1/4) (2-5x+6)

=(1/4)(8-5x)

= 8/4 - 5x/4

=1/2 - 5x/4

3 0
3 years ago
A store has a 10% off sale on pants. With this discount, the price of one pair of pants before tax is $17.10 What was the origin
Leno4ka [110]

Answer:

$171

Step-by-step explanation:

A store has a 10% off sale on pants. With this discount, the price of one pair of pants before tax is $17.10 What was the original price of the pants?

Let x represent the original price of the pair of pants

From the question, we know that:

10% of x = $17.10

10/100 × x = $17.10

10x/100 = $17.10

Cross Multiply

10x = 100 × $17.10

10x = 1710

x = 1710/10

x = $171

Hence, the original price of the pants = $171

6 0
3 years ago
What is the runner’s average rate of change between the hours: 0.5 and 2? mph 1.5 and 2.5? mph Average Rate of Change
lana [24]

Answer:

0.5 and 2?  

4

mph  

1.5 and 2.5?  

5

mph

Base on these results, the runner ran at a  rate between 0.5 and 2 hours than between 1.5 and 2.5 hours.

slower

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
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