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Greeley [361]
3 years ago
11

A company has to buy computers and printers. Each computer, x, costs $595 and each printer, y, costs

Mathematics
2 answers:
Lady_Fox [76]3 years ago
6 0
3 computers and 13 printers

595(x) + 390(y) = 6855

595(3) + 390(13) = 6855

$1785 + $5070 = $6855

Did this help??
fenix001 [56]3 years ago
4 0
Try and use Photomath
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In a paint factory, an old conveyer line has filled 50 barrels of paint, and is filling more at a rate of 2 barrels per minute.
bezimeni [28]

Answer:

60 barrels

Step-by-step explanation:

y = # of barrels; x = minutes

worker: y = 12x

old line: y = 2x + 50

12x = 2x + 50

10x = 50

x = 5

y = 12(5) = 60

y = 2(5) + 50 = 60

60 barrels

4 0
3 years ago
Given H(6,7) and I(-7,-6), if point G lies 1/2 of the way along line segment HI, Santiago argues that point G is located at the
irinina [24]

Given the points H(6,7) and I(-7,-6).

If point G lies \frac{1}{2} of the way along line segment HI.

Therefore, we can say that the point G divides the line segment HI in the ratio 1:1.

So, by using the cross section formula we can determine the coordinates of point G.

For the given points say (x_1, y_1) and (x_2, y_2) divided is in the ratio m_1 : m_2, the coordinates are (\frac{m_1x_2+m_2x_1}{m_1+m_2} , \frac{m_1y_2+m_2y_1}{m_1+m_2} )

Coordinates G = (\frac{(1 \times -7)+(1 \times 6)}{2} , \frac{(1 \times -6)+(1 \times 7)}{2})

= (-0.5 , 0.5)

Hence, the coordinates of G are (-0.5 , 0.5).

So, Santiago argues that point G is located at the origin. The point G is located at (-0.5, 0.5). Therefore, he is not correct.

8 0
3 years ago
Which set of ordered pairs could be generated by an exponential function?
olasank [31]

Answer:

The correct option is  (1,2), (0, 1), (1, 2), (2, 4).

Step-by-step explanation:

Consider the provided ordered pairs.

The exponential function is in the form of f(x)=ab^x

Where,  a is the initial amount a\neq 0 and  b is the rate of change b>0, b\neq 1

The graph of each exponential function passes through the point (0, a),

f(0)=a\cdot b^0 = a and a\neq 0  

Therefore, Option 1 and 2 and 4 are false.

Hence, the correct option is  (1,2), (0, 1), (1, 2), (2, 4).

6 0
3 years ago
What is the solution of 3x + y = 9 and 3x − 5y = 15?
Marianna [84]
So there are two ways.
First you could solve for y and plug it into the calculator. one equation for y1 and another for y2. Then go 2nd trace and press 5 and then press enter 3 times  to find the intersection. 
the second way is to solve by hand. I would suggest solve the first equation for y and plug the equation solved for y into the other equation. so y = -3x + 9 and 3x-5y=15. Then you could do 3x - 5(-3x+9) = 15. Finally solve for x and plug in x into both equations to see if you get the same y value. 
The answer should be (10/3, -1) 
3 0
3 years ago
Read 2 more answers
Ss below. <br> help would be appreciated.
sergeinik [125]

Answer:

(3,0,0)

Step-by-step explanation:

3x + 5y + z = 9     --------------(I)

-4y - z = 0   -------------------(II)

     z = -4y

2x + 3y  - 4z  = 6    (III)

Substitute  z = -4y      in equation (I) and (III)

3x  +5y - 4y = 9

3x + y = 9      -----------------------(a)

2x + 3y - 4*(-4y) = 6

2x + 3y + 16y = 6

2x + 19y = 6 -------------------(b)

Multiply equation (a) by (-19) and then add. So, y will be eliminated and we can get the value of x

(a)*(-19)            -57x - 19y  = -171

(b)                    <u>   2x  + 19y =   6 </u>

                        -55x           = -165

x = -165/-55

x = 3

Plugin x = 3 in equation (a)

3*3 + y = 9

 9  + y = 9

         y = 9 - 9

y = 0

Plug in y = 0 in equation (II)

-4*0 - z = 0

          z = 0

5 0
3 years ago
Read 2 more answers
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