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masha68 [24]
3 years ago
14

Pls help me pls pls pls​

Mathematics
1 answer:
3241004551 [841]3 years ago
7 0

Answer:

B. A shirt costs $15, and a pair of shoes costs $20.

Step-by-step explanation:

Let s = price of 1 shirt.

Let p = price of 1 pair of shoes.

Adam:

5s + 4p = 155

Friend:

3s + 2p = 85

We have a system of simultaneous equations.

5s + 4p = 155

3s + 2p = 85

Rewrite the first equation. Multiply both sides of the second equation by -2 and write below it. Add the equations.

      5s + 4p = 155

(+)  -6s - 4p = -170

--------------------------

      -s          = -15

s = 15

A shirt costs $15.

Now we replace s with 15 in the first original equation and solve for p.

5s + 4p = 155

5(15) + 4p = 155

75 + 4p = 155

4p = 80

p = 20

A pair of shoes costs $20.

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25

p-value is the probability of obtaining the value of the test statistics. In the column of t-value in the row df=25

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8 0
3 years ago
Ana owns an airline and pays the airport $35.00 for each ticket sold. the amount Ana pays is given by f(x)=35x where x is the nu
nirvana33 [79]

Answer:

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Step-by-step explanation:

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A bicycle shop is selling $500.00 bikes at 10% off. if the sales tax is 7% how much will the bike cost?
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