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IgorC [24]
3 years ago
14

there are 12 students working in the library if 3/4 of them are girls how many girls are working in the library

Mathematics
2 answers:
____ [38]3 years ago
6 0
If you would like to know how many girls are working in the library, you can calculate this using the following steps:

3/4 of 12 students = 3/4 * 12 = 3 * 3 = 9 girls

Result: There are 9 girls working in the library.
navik [9.2K]3 years ago
5 0
So 3/4 of 12
remember that 12=12/1
and if you ahve x/y times z/t that equals to (xz)/(yt) so
'of' means multiply
3/4 times 12/1=(3 times 12)/(4 times 1)=36/4=9/1=9
9 are working in the library
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Samantha has $24 but she wants a pair of Jordan's that are $112. She does chores and she gets paid $5 for each chore. If she doe
natita [175]

Answer:

Check step-by-step.

Step-by-step explanation:

Okay, so. She gets 5 dollars and she does 15 chores. You would multiply it.

5 * 15 = $75

Then you would subtract 112 and 75.

112 - 75 = 37.

She will get $75. Then, she will need to gather $37

6 0
2 years ago
Mariana solved the equation below. Identify her ERROR and EXPLAIN what she did wrong. -3(2x-4)=-12 -6x-12=-12 -6x=0 x=0
nydimaria [60]

Answer:

Her error was multiplying -3 and -4 which gives +12 but she wrote -12 instead

Step-by-step explanation:

Mariana workings:

-3(2x - 4) = -12

-6x - 12 = -12

Her error was multiplying -3 and -4 which gives +12 but she wrote -12 instead

-6x = 0

x=0

Correct workings:

-3(2x - 4) = -12

-6x + 12 = - 12

-6x = -12 - 12

-6x = -24

x = -24/-6

x = 4

8 0
2 years ago
She ran 52.16 seconds per 400 meters how many seconds did it take her to run 100 meters?
Xelga [282]

Answer:

13.04

Step-by-step explanation:

since 100 is 1/4 of 400, you divide 52.16 by 4

5 0
2 years ago
5x + 2y = 7
zvonat [6]

Answer:

(\frac{5}{7},\frac{12}{7})

Step-by-step explanation:

The given system is

5x+2y=7

y=x+1

We substitute the bottom equation into the top equation to get:

5x+2(x+1)=7

Expand to get:

5x+2x+2=7

Group similar terms:

5x+2x=7-2

Combine similar terms:

7x=5

x=\frac{5}{7}

Put x=\frac{5}{7} into the bottom equation

y=\frac{5}{7}+1

y=\frac{5+7}{7}

y=\frac{12}{7}

The solution is

(\frac{5}{7},\frac{12}{7})

8 0
3 years ago
Read 2 more answers
A scientist counted 3921 total eggs in 49 sea turtle nests.There were about the same number of eggs in each nest.Which is a reas
storchak [24]
3921 / 49 = 80 
You are trying to find out how many 49's go into 3921, to do this, you have to take 3921 and divide it by 49, this will tell you how many eggs are in each nest.
Alternatively, the question could have said there are 3921 total eggs, and approximately 80 eggs in each nest, how many nests were there?
Here we'd go ahead and divide 3921 by 80 to get 49. 
7 0
3 years ago
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