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GarryVolchara [31]
3 years ago
9

Choose a system and make a case for why you would

Mathematics
1 answer:
Elenna [48]3 years ago
3 0

Answer:

The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other.

Step-by-step explanation:

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I need help with this question.
Makovka662 [10]
The monthly rent of the apartment is x = 1310 dollars a month

8 0
3 years ago
The ratio of rock music to total CDs that ella owns is 25/40. Paolo has 50 rock music CDs. The ratio of rock music to total CDs
qaws [65]
They own a total of 120 CDs.

GIVEN:
Ella: ratio of rock music to total CDs that she owns 25/40
Paolo: has 50 rock music CDs. The ratio of rock music to total CD is equal to Ella's ratio.

Proportion: a/b = c/d where ad = bc

25/40 = 50/x
25x = 40 * 50
25x = 2000
25x / 25 = 2000 / 25
x = 80  total of Paolo's CDs

Total of Ella's CDs       =  40
Total of Paolo's CDs   =<u>  80</u>
Total CDs in all               120


5 0
4 years ago
A shop owner offered a 20% discount off the regular price of a mirror. The amount of discount is $3 what is the regular price of
Alisiya [41]

Answer: $15

Step-by-step explanation:

The normal price of the mirror is unknown we do not know that yet. So, let y represent the unknown number. The discount is 20 percent, we turn 20 into a decimal which would be 0.2. The amount of discount is $3. So, 0.2y equals to $3.

Then we divided.

y = 3 ÷ 0.2

And when you divide that is would be 15.

So, the regular price of the mirror is $15.

5 0
2 years ago
Greatest common factor of 8 and 14?
maxonik [38]
The greatest common factor (GCF) of 8 and 14 is 2
3 0
3 years ago
Read 2 more answers
During his summer vacation, Alex spent 6 minutes riding his bike for every minute he spent watching television. If he rode his b
Mariana [72]

Answer:

130

Step-by-step explanation:

So you have 780 and 6 right? So, you  put 780 in the division box and 6 right outside. Divide and you will get 130, unless you make a mistake.

6 0
3 years ago
Read 2 more answers
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