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Likurg_2 [28]
3 years ago
15

Please help me answer Q9 in the photo!

Mathematics
1 answer:
padilas [110]3 years ago
4 0

See the attached picture for explanation and steps:


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8.4.9 On or off the line & Practice Problems
Andrews [41]

Answer:

Number of quarters → 15

Number of dimes → 2

Step-by-step explanation:

Let the number of dimes I have = y

And number of quarters = x

Since, I have amount in my pocket = $2

Therefore, 0.10y + 0.25x = 2

100(0.10y + 0.25x) = 100×2

25x + 10y = 200

5x + 2y = 40

2y = -5x + 40

y = -2.5x + 20 ---------(1)

Total number of coins in my pocket = 17

x + y = 17

y = -x + 17 ---------(2)  

By using a graphing calculator we can graph these two lines (As attached)

Solution of the given system of equations will be the point of intersection of these lines.

Solution → (2, 15)

Number of quarters → 15

Number of dimes → 2

4 0
3 years ago
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iogann1982 [59]
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2 years ago
PLSS HELP I NEED IT RN
Kisachek [45]

Answer:

x >= -3

x is greater than or equal to -3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Based on the information below, choose the correct answers.
lozanna [386]

Since there are 120 payment and the total interest paid was $ 14,644.95. so the average monthly interest can be calculated by:

Average monthly interest = $ 14,644.95 / 120

Average monthly interest = $ 122.04

 

% total interest = ($ 14,644.95) / $ 39,644.95 x 100

% total interest =36.94 %

8 0
2 years ago
Totsakan's school is selling tickets to a spring musical. On the first day of ticket sales the school sold 5 adult tickets and 1
bija089 [108]

Answer:

1) adult ticket: $14, child ticket: $9

Step-by-step explanation:

3 0
3 years ago
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