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Ksivusya [100]
3 years ago
13

Help me please! I need to get this done by today! I am doing ratios and rates! I will also make you the brainlest

Mathematics
2 answers:
Anna [14]3 years ago
7 0

Step-by-step explanation:

Students Hours

52 8

X 6

So,

52×6=8×x

312=8x

312/8=x

39 Students Answer

storchak [24]3 years ago
6 0

Answer:

39 students

Step-by-step explanation:

52 students/8 hours times =6.5 students per hour

6.5 students per hour x 6 hours = 39 students

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The first thing you want to do is plug in x and y into both equations:

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b(3) + a(4) = 8

rearrange to line up a’s and b’s

3a + 4b = 4

4a + 3b = 8

now you want to choose a or b and multiply each equation by a number to make them have the same amount of a’s or b’s.

4(3a + 4b = 4) = 12a + 16b = 16

3(4a + 3b = 8) = 12a + 9b = 24


Now we subtract the bottom equation from the top and solve for b:

12a + 16b - (12a + 9b) = 16 - 24

7b = -8

b = -8/7


Now we plug back in for b to one of the original equations:

3a + 4(-8/7) = 4

3a + (-32/7) = 4

3a - (32/7) = 4

3a = 4 + (32/7)

3a = (28/7) + (32/7)

3a = 60/7

a = (60/7)/3 = 20/7.


Finally, plug a and b in together to double check using the second equation.

4a + 3b = 8

4(20/7) + 3(-8/7) = ?

(80/7) - (24/7) = ?

56/7 = 8.
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3 years ago
After 9 new members joined the ski club, there were 38 members. How many members had been in the club previously?
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Answer:

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Step-by-step explanation:


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There are <u>1000</u> milligrams in 1 gram.

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