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artcher [175]
2 years ago
14

Solve for x. Write your answer in the space below. 7x = 42.

Mathematics
1 answer:
nikitadnepr [17]2 years ago
3 0

Answer:

x=6

Step-by-step explanation:

7x =42

7     7

 x=6

Divide 7 on both sides

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vaieri [72.5K]
It's 14. I don't understand if u are trying to test us or something like that because it's almost Christmas
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$29.00 and you can also multiply too is is a cool way
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Dmitrij [34]

Answer:

B

Step-by-step explanation:

Remark

The easiest way to do this is to Substitute for y in the top equation.

2x + 4y = 18                         Divide by 2

2x/2 + 4y/2 = 18/2

x + 2y = 9

Substitute -3x + 2 in for y in the equation above

x + 2(-3x + 2) = 9

x - 6x + 4 = 9                    

Combine like terms on the left

-5x + 4 = 9                      

Subtract 4 from both sides.

-5x + 4-4 = 9- 4

-5x = 5

Divide by -5

-5x/-5 = 5/-5

x = - 1

That makes A and C incorrect.

y = -3x + 2

y = -3(-1) + 2

y = 3 + 2

y = 5

The correct answer should be (-1,5) which is B

7 0
3 years ago
Pleaseee help with 22 & 23 !! ASAP !!
Blizzard [7]

#22. We are given that y = 1/4. So, we want to plug this value into the expression 15/y:

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When you divide by a fraction, you should follow the rule “flip the guy and multiply”. Basically, 15/(1/4) = 15 * 4 = 60.

The answer for #22 is (D).

#23. We can use a proportion:

(The shaded area)/(entire circle area) = (360 - 60)/360

But, we don’t have to find the areas of the region and circle; we can just solve the fraction:

(360 - 60)/360 = 300/360 = 30/36 = 5/6

The answer for #23 is (A).

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Answer:

y=16

Step-by-step explanation:

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