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serious [3.7K]
3 years ago
7

a computer store bought a program at a cost of $20 and sold it at a selling price$26. what is the percent markup

Mathematics
1 answer:
tekilochka [14]3 years ago
8 0

it would be a 6 percent mark up :)

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Suppose that the functions r and s are defined for all real numbers x as follows.<br> HELP PLEASE
Bas_tet [7]

Answer:

-x-3, 7x-3, -15

Step-by-step explanation:

For first 2 just add/subtract their equations. For the last one (r.s)(-1) is the same as r(s(-1)) so s(-1)=4(-1)=-4 and r(-4)=3(-4)-3=-12-3=-15

3 0
3 years ago
How fast was a plane flying if it traveled 40 kilometers in 30 minutes​
dangina [55]

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80 km/hr

Step-by-step explanation:

0.5 hour = 30 min

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2 years ago
Solve each pair of simulation equation.Giving both solutions. Multiply both equations by suitable numbers before adding/subtract
pashok25 [27]

Answer:

Step-by-step explanation:

I haven't got time to do all these by I'll give you the method in each case.

You have to make the x or y term equal (or 1 term + and other -) in both equations before adding or subtracting.

A . Multiply  equation 2 by 2 and subtract (to eliminate x)

- don't forget to multiply EACH TERM by 2.

B. Multiply  equation 2 by -2 and add.

C.  Multiply  equation 1 by 3 and equation 2 by 2 ( this will give -6y and +6y in the resulting equations ) so  you then add to eliminate y.

D.  Multiply equation 1 by 13 and equation  and equation 2 by 2 to eliminate x then add.

6 0
2 years ago
Which number line represents the solution |2x|-12 =
Bond [772]

Answer:

Third option, last one

Step-by-step explanation:

Let's solve for x first.

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The number line that represents this is the last one.

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3 years ago
Does the point (8, 8) satisfy the equation y = x?
nika2105 [10]

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Yes.

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Substitute the values for the variables in the equation.

y = x

(8) = (8)

7 0
2 years ago
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