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jenyasd209 [6]
3 years ago
15

A company buys computers and printers. Each computer costs $550 and each printer costs $390. If the company spends $8160 and buy

s a total of 16 machines, how many of each did it buy?
Mathematics
1 answer:
maxonik [38]3 years ago
6 0

Answer:the company bought 12 computers and 4 printers.

Step-by-step explanation:

Let x represent the number of computers that the company bought.

Let y represent the number of printers that the company bought.

The company buys a total of 16 machines. It means that

x + y = 16

Each computer costs $550 and each printer costs $390. If the company spends $8160 for all the computers and printers that was bought, it means that

550x + 390y = 8160 - - - - - - - - - - 1

Substituting x = 16 - y into equation 1, it becomes

550(16 - y) + 390y = 8160

8800 - 550y + 390y = 8160

- 550y + 390y = 8160 - 8800

- 160y = - 640

y = - 640/ - 160

y = 4

Substituting y = 4 into x = 16 - y, it becomes

x = 16 - 4

x = 12

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victus00 [196]

Answer:

f(0) = -3

x increases by 1 f(x) increase by 2

f(x) = 2x -3

Step-by-step explanation:

Looking at the graph

f(0) means when x =0 the value of y = ?

when x = 0 y = -3

f(1) means when x = 1  y = ?

When x = 1 y = -1

y increased from -3 to -1 so it increased by 2

f(x) = ax+b  where a is the increase and b is the value at x =0

f(x) = 2x -3

7 0
3 years ago
Can you pls help me i need it?
Elina [12.6K]

Answer:

$114.75

Step-by-step explanation:

You have to multiply the hours by the wage. Looking at the time that the worker was in during the morning, it was a total of 4 hours. Since the wage is $13.50/hr, we would multiply 13.50 by 4.

13.50 * 4 = 54.00

So, now we have to add together the total hours in the afternoon. If we count the time, we get 4 1/2 hours. So, now we multiply 13.50 by 4.5.

13.50 * 4.5 = 60.75

Now, to find the total pay for that day, we add both the morning and the afternoon pay together.

54.00 + 60.75 = 114.75

Therefore, the pay for this day is $114.75.

6 0
3 years ago
A card is drawn from a standard deck of 52 cards. Find the probability of drawing red card or a face card
nata0808 [166]

Answer:

12/104 or around 11% chance

Step-by-step explanation:

This is because there is a total of 26 red cards (1/2) and a total of 12 face cards (12/52). So, you multiply 1/2 x 12/52 and get 12/104 or around 11% chance

8 0
3 years ago
the length of a rectangular patio is 7 feet more than its width, w The area of the patio A(w),can be represented by the function
lesya692 [45]

The area of the patio A(w), can be represented by the function that will be A(w) = w² + 7w.

<h3>What is the area of the rectangle?</h3>

Let L be the length and W be the width of the rectangle.

Then the area of the rectangle will be

Area of the rectangle = L×W square units

The length of a rectangular patio is 7 feet more than its width (w).

The area of the patio A(w),can be represented by the function

Length (L) = w + 7

Then the area will be

A(w) = (w + 7)w

A(w) = w² + 7w

More about the area of the rectangle link is given below.

brainly.com/question/20693059

#SPJ1

8 0
2 years ago
the length of a rectangle is the sum of width and 1. the area of rectangle is 20 units. what is the width, in units, of the rect
Greeley [361]

Answer:

the width is 4 units

Step-by-step explanation:

because 4+ 1 = 5 is the length

4 is the width

20 is the area

5 0
3 years ago
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