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RSB [31]
3 years ago
15

Plz help meh......plz

Mathematics
2 answers:
ivann1987 [24]3 years ago
5 0

Answer:

62

Step-by-step explanation:

because of vertical angles, then corresponding angles it is congruent to the 62 angle

harina [27]3 years ago
5 0
The answer is 62 the first person is right
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Solve the system of equations y=5x-1 y=9x-9
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7 0
2 years ago
Solve the equation 425x=850
mylen [45]

Answer:2


Step-by-step explanation:

DIVIDE 425 ON BOTH SIDES

AND U WILL GET 2

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Together a refrigerator and a desk cost $216. Find the price of each if the refrigerator costs three times as much as the desk
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Read 2 more answers
A business executive bought 40 stamps for
alekssr [168]

Answer:

32 33-cent stamps, 8 23-cent stamps

Step-by-step explanation:

In order to solve this question, we need to set up a system of equations. Also known as solving for two variables (the number of each stamp).

Let's set x to be the number of 33-cent stamps. Similarly, let's set y to be the number of 23-cent stamps.

To make our first equation, let's think about the number of stamps total we have. We can say:

x + y =40

<em>(AKA - The number of 33-cent stamps, plus the number of 23-cent stamps, equals 40 stamps.)</em>

Now, let's make an equation for the cost of these stamps.

0.33x + 0.23y = 12.40

<em>(AKA - The cost of the stamps in total, should equal $12.40).</em>

So now, we have our two equations:

x + y =40\\0.33x+0.23y=12.40

If you have a TI-84 graphing calculator, you can go to apps -> polysmlt2 -> simultaneous eqn solver, and then input these equations into the menu. This will solve the problem for you.

If you need to do this manually, let's use substitution. Condense our first equation to make it more substitutable.

x+y=40\\x=40-y

Now, let's put this into our second equation.

0.33x+0.23y=12.40\\0.33(40-y)+0.23y=12.40

Distribute, and solve for y.

13.2-0.33y +0.23y =12.40\\13.2-0.1y=12.40\\-0.1y=-0.8\\y=8

Now, we plug this into one of our equations.

x+y=40\\x+8=40\\x=32

In the end, we have thirty-two 33-cent stamps, and eight 23-cent stamps.

3 0
1 year ago
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