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Deffense [45]
3 years ago
11

What's 15/.75 and 99/162? Show works please. :)

Mathematics
1 answer:
Bumek [7]3 years ago
5 0
15/.75 
= 1500/75
= 20

99/162
= (99/9)/ (162/9)
= 11/18

Hope this helps~
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When Rafael emptied his pockets, e found he had a total of $3.50 in quarters and nickels. If he had 8 more quarters that nickels
jasenka [17]
You can use systems of equations for this one.

We are going to use 'q' as the number of quarters Rafael had,
and 'n' as the number of nickels Rafael had.


You can write the first equation like this:
3.50=0.05n+0.25q
This says that however many 5 cent nickels he had, and however many
25 cent quarters he had, all added up to value $3.50.
Our second equation is this:
q=n+8
This says that Rafael had 8 more nickels that he had quarters.

We can now use substitution to solve our system.

We can rewrite our first equation from:
3.50=0.05n+0.25q
to:
3.50=0.05n+0.25(n+8)

From here, simply solve using PEMDAS.

3.50=0.05n+0.25(n+8)     --Distribute 0.25 to the n and the 8
3.50=0.05n+0.25n+2     --Subtract 2 from both sides
1.50=0.05n+0.25n     --Combine like terms
1.50=0.30n     --Divide both sides by 0.30
5=n     --This is how many NICKELS Rafael has.

We now know how many nickels he has, but the question is asking us
how many quarters he has.

Simply substitute our now-known value of n into either of our previous
equations (3.50=0.05n+0.25q or q=n+8) and solve.

We now know that Rafael had 13 quarters.

To check, just substitute our known values for our variables and solve.
If both sides of our equations are equal, then you know that you have
yourself a correct answer.

Happy math-ing :)
5 0
3 years ago
Pls help! TIMED test!​
enyata [817]

Answer:

2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please help me <br>is importe ​
astra-53 [7]

Answer:

A, B, C, D, E. there all greater than 2 and 5/6 because they all show 2 5/6 and they times somthing by that. Hope this helps! and maybe a Brainlest?

Step-by-step explanation:

7 0
2 years ago
Kağıt üstünde yapıp göderir seniz çok mutlu olurum​
Savatey [412]

Answer:

4. 209

7. 10000

I may be wrong.

3 0
2 years ago
Bonnie's favorite game at the arcade is Can Em Down. In the game, players earn 7 points for each can they knock down. Bonnie ear
Sonbull [250]

Answer:

c = (total points earned in best game / points per can knocked down)

c = 12

Step-by-step explanation:

Given that :

Points earned per knockdown = 7

Total points earned in best game = 84

Number of cans knocked down, c

c = (total points earned in best game / points per can knocked down)

c = 84/ 7

c = 12

4 0
3 years ago
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