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Dominik [7]
2 years ago
10

6. 3x - 2y = 19 x + y=8.

Mathematics
2 answers:
mrs_skeptik [129]2 years ago
4 0

Answer:

x = 7

y = 1

x + y = 8

Step-by-step explanation:

3x - 2y = 19

3(7) = 21

2(1) = 2

21-2= 19

(7+1=8)

hopefully this helped

EastWind [94]2 years ago
3 0

Answer:

3x - 2y = 19

x + y=8.

rewrite

-2y=-3x+19

-2y=2x-16

-3x+19=2x-16

+3x

19=5x-16

+16

35=5x

x=7

y=1

Hope This Helps!!!

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the difference between 2 whole numbers is 66. the ratio of the 2 numbers is 2:5, what are the 2 numbers​
shtirl [24]

Answer:

44 and 110

Step-by-step explanation:

The ratio of the 2 numbers = 2 : 5 = 2x : 5x ( x is a multiplier ) , thus

difference = 5x - 2x = 3x , then

3x = 66 ( divide both sides by 3 )

x = 22

Thus

2x = 2 × 22 = 44

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The 2 numbers are 44 and 110

8 0
3 years ago
Please help........................
ivanzaharov [21]

The volume of a sphere is 4/3 * pi * r³ so substitute the values in

4/3 * pi * 2³

4/3 * pi * 8

32/3 * pi

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6 0
3 years ago
7*z^(1/2)-3=2*z??? solve??/
Hoochie [10]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Write out the following proportions in words. a. 7 :28 = 2 : 8 b. 3⁄1 = 18⁄6 c. 9 : 72 = 2 : 16 d. 81⁄9 = 45⁄5
Lerok [7]
1) Proportion a.

7 : 28 = 2 : 8

That means that the ratio 7 / 28 is equal to the ratio 2 : 8. 

You can verify the equality by simplifying to the simplest form:

     7 : 28 = 1 / 4 simplest form
     2 : 8 = 1 / 4 simplest form, then the proportion is right.

In words that is 7 is to 28 as 1 is to 4 ← answer


2) Proportion b.<span>. 3⁄1 = 18⁄6
</span><span>
</span><span>
</span><span>In words: 3 is to q as 18 is to 6 ← answer
</span><span>
</span><span>
</span><span>You can verify the proportion by simplifiying the second fraction:
</span><span>
</span><span>
</span><span>     18 / 6 = [18 / 6] / [ 6 / 6] = 3 / 1
</span><span>
</span><span>
</span><span>3) Proportion c. 9 : 72 = 2 : 16
</span><span>
</span><span>
</span><span>In words: 9 is to 72 as 2 is to 16 ← answer
</span><span>
</span><span>
</span><span>Proove the proportion:
</span><span>
</span><span>
</span><span>     9 / 72 = 1 / 8
</span><span>
</span><span>
</span><span>     2 / 16 = 1 / 8
</span><span>
</span><span>
</span><span>4) Proportion d. 81⁄9 = 45⁄5</span>

In words: 81 is to 9 as 45 is to 5 ← answer


Proove it: 
      81 / 9 = 9
      45 / 9 = 9
8 0
3 years ago
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Answer: (2,-3)

Step-by-step explanation:

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