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scZoUnD [109]
3 years ago
7

Oley Scotchgard sells TV's. He earns a 4.5% commission on sales. If his sales last week were $9000, how much did Oley earn?

Mathematics
1 answer:
mestny [16]3 years ago
7 0
Oley earned $405.00 last week
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Solve the system of equations
rewona [7]

Answer:

x = 1/4

y = -1/2

z = 9/4

Step-by-step explanation:

Here we have a system of 3 equations with 3 variables:

4*x + 2*y + 1 = 1

2*x - y = 1

x + 3*y + z = 1

The first step to solve this, is to isolate one of the variables in one of the equations, let's isolate "y" in the second equation:

2*x - y = 1

2*x - 1 = y

Now that we have an expression equivalent to "y", we can replace this in the other two equations:

4*x + 2*(2*x - 1) + 1 = 1

x + 3*(2*x - 1) + z = 1

Now let's simplify these two equations:

8*x - 1 = 1

7*x - 3 + z = 1

Now, in the first equation we have only the variable x, so we can solve that equation to find the value of x:

8*x - 1 = 1

8*x = 1 + 1 = 2

x = 2/8 = 1/4

Now that we know the value of x, we can replace this in the other equation to find the value of z.

7*(1/4) -3 + z = 1

7/4 - 3 + z = 1

z = 1 + 3 - 7/4

z = 4 - 7/4

z = 16/4 - 7/4 = 9/4

z = 9/4

Now we can use the equation y = 2*x - 1 and the value of x to find the value of y:

y = 2*(1/4) - 1

y = 2/4 - 1

y = 1/2 - 1

y = -1/2

Then the solution is:

x = 1/4

y = -1/2

z = 9/4

7 0
3 years ago
C. What number is 40% of 1607?
Novay_Z [31]

Answer:

642.8

Step-by-step explanation:

1607 divided by 10 = 160.7 x 4 = 642.8

8 0
2 years ago
The size of airmail packages is it continuous or discrete?
valina [46]
The answer is d<span>iscrete.</span>
6 0
2 years ago
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Simplify <br><br> 4 - 8 multiply 3/4 + 1/4
FromTheMoon [43]
The given equation is 4 - 8 * [3/4 + 1/4]
- 4 * [3/4 + 1/4]
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The answer is - 4.
6 0
3 years ago
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Jen simplified a radical expression. Her work is shown.
9966 [12]

Answer:

im taking the same test lol

Step-by-step explanation:

6 0
2 years ago
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