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IrinaVladis [17]
3 years ago
7

The expression 3A + 2.5S gives the cost in dollars of A adult tickets and S student tickets. What is the cost of 2 adult tickets

and 4 student ​
Mathematics
1 answer:
Andrei [34K]3 years ago
4 0

Answer:

16

Step-by-step explanation:

A = 2; S = 4

3A + 2.5S =

= 3(2) + 2.5(4)

= 6 + 10

= 16

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The new point is (5,2)
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Divide 7/9 by -11/7 then simplify
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Invert the divisor and then multiply 7/9 by your result:

 7      -7        -49
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Can someone please explain to me how to do <br> 3/5x + 22 = 28<br> Thanks so much
AysviL [449]
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       -22  -22

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4 0
2 years ago
You purchase a $220 Arline ticket. You have a discount code to receive 10% off. There is a 10.5% service charge added to the tot
antoniya [11.8K]
When you see % next to a number, you multiply it by .01.
10 becomes .1
10.5 becomes .105

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220-22+23.1=$221.10 for the ticket.
7 0
3 years ago
Alex has 84 quarters and nickels worth a total of $17.80.
Hunter-Best [27]

The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.

<h3>Quarters and nickels</h3>

  • Total coins = 84
  • Total value = $17.80

let

  • Number of quarters = q
  • Number of nickels = n

n + q = 84

0.05n + 0.25q = 17.80

From equation (1)

n = 84 - q

Substitute into (2)

0.05n + 0.25q = 17.80

0.05(84 - q) + 0.25q = 17.80

4.2 - 0.05q + 0.25q = 17.80

- 0.05q + 0.25q = 17.80 - 4.2

0.20q = 13.60

q = 13.60 / 0.20

q = 68

Substitute q = 68 into

n + q = 84

n + 68 = 84

n = 84 - 68

n = 16

Therefore, the number of quarters and nickels are 68 and 16 respectively.

Learn more about quarters and nickels:

brainly.com/question/17127685

#SPJ1

6 0
2 years ago
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