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Damm [24]
3 years ago
8

N a classroom of 33 students, the ratio of boys to girls is 3 : 8. How many boys are in the class?

Mathematics
1 answer:
tiny-mole [99]3 years ago
4 0

3 boys + 8 girls = 11 students

3 boys/ 11 students = x boys /33 students

using cross products

3 * 33 = x*11

divide by 11

99/11 = x

x=9

There are 9 boys

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3 0
2 years ago
X-5+x-11=100 what is the reason for this statement for geometry?​
Mariulka [41]

Answer:

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3 0
3 years ago
What is the probability that 2 randomly selected months have 31 days?
aniked [119]

Answer:

31.8%

Step-by-step explanation:There are 7 months that have 31 days so,

The odds the first selected month has 31 days is 7/12

The next month there are only 6 months left with 31 days of only 11 months to choose from

so the odds for the second are 6/11

To calculate the odds they BOTH  have 31 months you multiply the two odds:

(7/12) x (6/11) = 42/132 = .318 so 31.8%

6 0
3 years ago
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Vikki [24]
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7 0
2 years ago
in a history class the girl to boy ratio is 9 to 5 if there are a total of 70 students, how many boys are there​
Nikolay [14]

Answer:

Girls: 45

Boys: 25

Step-by-step explanation:

9 + 5 = 14

70 \div 14 = 5

9 \times 5 = 45

5 \times 5 = 25

Awnser Check:

45 + 25 = 70

8 0
3 years ago
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