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Irina18 [472]
3 years ago
12

it takes one printer, working alone, 9 h longer to print a payroll than it takes a second printer. working together, the printer

s can print the payroll in 6 h. how long would it take each printer, working alone, to print the payroll?
Mathematics
1 answer:
Lelechka [254]3 years ago
7 0

Answer:

7.5 Hours (This is questioned weird though so it could be different)

Step-by-step explanation:

Just add 9 to 6 and you'll have 15 divided by two equals 7.5.

Or since it takes 6 hours for both, multiply by 2 equals 12

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Solve the system of equations 7x+10y=36 y=2x+9
Damm [24]

Answer:

x = -2

y = 5

Step-by-step explanation:

Given two equations

1. 7x + 10y = 36

2. y = 2x + 9

Substitute 2x + 9 for y in equation 1.

We have

7x + 10y = 36

7x + 10(2x + 9) = 36

Distribute 10 into (2x + 9)

We have

7x + 10 x 2x + 10 x 9 = 36

7x + 20x + 90 = 36

27x + 90 = 36

Subtract 90 from both sides to eliminate 90 on the left side

27x + 90 - 90 = 36 - 90

27x = -54

Divide both sides by 27 to isolate x

27x/27 = -54/27

x = -2

Now substitute -2 into either equation to get y

Using equation 2, we have

y = 2x + 9

= 2 x -2 + 9

= -4 + 9

= 5

x = -2

y = 5

Check

7(-2) + 10(5) = 36

5 0
3 years ago
I need to know the equations
dem82 [27]
Let l, t, b represent the numbers of lions, tigers, bears, respectively.

2l +3t +3b = 156 . . . . . . . 156 meals per day are supplied
l +t = 3b . . . . . . . . . . . . . . there are 3 times as many great cats as bears
l +t +b = 68 . . . . . . . . . . . there are a total of 68 animals

_____
The last 2 equations tell you
.. 4b = 68
.. b = 17
Subtracting 3 times the last equation from the first gives
.. -l = -48
There are 48 lions, 3 tigers, and 17 bears.
4 0
3 years ago
Read 2 more answers
The sum of the digits of a two-digit number is 13. Twice the first digit is 1 less than the second digit. What is the two digit
Alex

Answer:

6 and 7

Step-by-step explanation:

10(13-X) + X= 13-9X. 3×2=6. 7-6=1. 7+6=13

4 0
3 years ago
PLEASE HELP
natulia [17]

Answer:

2

Step-by-step explanation:

As per the interval, x = 1 and y = 5/2

<u>Substitute x into the expression:</u>

3 - 1 = 2

3 0
3 years ago
Which is bigger 40% of 120 or 1/4 of 200
Anvisha [2.4K]
40% of 120 is 48 1/4 of 200 is 50 1/4 of 200 is bigger.
3 0
3 years ago
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