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Leno4ka [110]
3 years ago
11

Derek has $20 to spend on used

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
5 0
5x+2y = 20

For every hardcover book (x) you will be charged 5$.

For every paperback book (y) you will be charged 2$.

The amount of both types of books you buy has to be under or equal to 20$
UkoKoshka [18]3 years ago
5 0

Answer:

The equation is  5x + 2y = 20

Step-by-step explanation:

Total money Derek having = 20 $

Cost of hardcover book = 5 $

Cost of paperbacks = 2 $

We need to find equation in standard  form determines the number x of hardcover books and the number y  of paperback books he can buy.

Total cost of x hard cover books = 5x

Total cost of y paperback books = 2y

He has only 20 $

So we have

                  5x + 2y = 20

The equation is  5x + 2y = 20      

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Say that you (or your parents) are purchasing a new car for $22,358. The sales tax is 6.45%, the down payment is 10% of the tota
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Answer:

  (a)  $133.88

Step-by-step explanation:

The addition of tax multiplies the purchase price by 1+6.45% = 1.0645. The payment of the down payment means the loan amount will be only 1-10% = 0.90 times the amount with tax. So, the loan amount is ...

  $22,359(1.0645)(0.90) = $21,420.08

The loan is a secured loan (secured by the vehicle). So, the interest charged is that for a poor credit rating: 7.5%.

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Havana was born on February 14, 1987. How old was she on her birthday in 2002?
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4 0
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Wendy's mother recorded how many donuts she has eaten over the past few months. Jelly-filled donuts 6 maple donuts 53 glazed don
coldgirl [10]

Answer:

P(\text{Powdered sugar donut})=\dfrac{1}{15} .

Step-by-step explanation:

It is given that Wendy's mother recorded how many donuts she has eaten over the past few months.

Jelly-filled donuts = 6

Maple donuts = 53  

Glazed donuts = 11  

Powdered sugar donuts = 5

Now,

Total number of donuts = 6 + 53 + 11 + 5 = 75

We need to find the experimental probability that the next donut Wendy eats will be a powdered sugar donut.

P(\text{Powdered sugar donut})=\dfrac{\text{Powdered sugar donuts}}{\text{Total number of donuts}}

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Therefore, P(\text{Powdered sugar donut})=\dfrac{1}{15}.

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Answer:

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Step-by-step explanation:

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