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ruslelena [56]
3 years ago
10

Set up and solve a system of equations to solve the problem.

Mathematics
2 answers:
Murrr4er [49]3 years ago
5 0
Y = 30x + 60
y = 50x

30x - y = -60
50x - y = 0
solve the system.
(3,50)
he would pay the same amount at 3 months in, for $50.

Butoxors [25]3 years ago
4 0

Answer:

The first Gym when he joins we will have to pay 60 dollars and in a 30 witch cost 90 dollers. but the second gym cost 50 $ per month so the first gym in a year he will pay 450$ and the second one 600 so the first one is cheeper.

Step-by-step explanation:

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Gabby has a bag containing 36 nickels and quarters. The total value of the coins is $5. How many quarters does gabby have?
olganol [36]

There are 20 nickels and 16 quarters

<em><u>Solution:</u></em>

Let "n" be the number of nickels

Let "q" be the number of quarters

We know that,

1 nickel = 0.05 dollar

1 quarter = 0.25 dollar

<em><u>Gabby has a bag containing 36 nickels and quarters</u></em>

Therefore,

n + q = 36

n = 36 - q ------- eqn 1

<em><u>The total value of the coins is $5</u></em>

<em><u>Thus we frame a equation as:</u></em>

number of nickels x 1 nickel + number of quarters x 1 quarter = 5

n \times 0.05 + q \times 0.25 = 5

0.05n + 0.25q = 5 ------- eqn 2

<em><u>Substitute eqn 1 in eqn 2</u></em>

0.05(36 - q) + 0.25q = 5

1.8 - 0.05q + 0.25q = 5

0.2q = 3.2

q = 16

<em><u>Substitute q = 16 in eqn 1</u></em>

n = 36 - 16

n = 20

Thus there are 20 nickels and 16 quarters

8 0
3 years ago
Ross purchases an electric guitar. He has $225 to put towards the purchase. He saves $50 each month until he has enough money fo
Mrac [35]

Answer:

Atleast 5 months, can you give me a photo so i can make sure my answer is correct?

Step-by-step explanation:

4 0
2 years ago
-9 times s equal to 6, solve for s
alexandr402 [8]

Step-by-step explanation:

-9 x s = 6

-9 x 6 =s

-54=s

s=-54

6 0
3 years ago
8. A wave is known to have a frequency of 20 Hz, wavelength of 0.5 m, and amplitude of 1.2 m. If the amplitude of the wave is do
Jlenok [28]
The 8 one is larger,  the 9.  is smaller and the 10. is same


im pretty sure thats right hope i could help
7 0
3 years ago
7th grade math help me pleaseeee
padilas [110]

Answer:

The answer is D

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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