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MAXImum [283]
2 years ago
15

1. Adelle solved the equation ½ (x + 8) = - 30 as shown.

Mathematics
1 answer:
Deffense [45]2 years ago
5 0

Answer:

-68

Step-by-step explanation:

1/2(x+8)=-30

1/2x+4=-30

You then subtract 4 on both sides which makes:

1/2x=-34

Then you divided 1/2 on both sides:

x=-68

(Did I do this correctly, if not I appologize!)

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I need to know how to multiply 2/9×5/7
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Answer: 10/63

Step-by-step explanation: To multiply fractions, you just time's the top numbers and then the bottom numbers by themselves.

For instance: 2 x 5 = 10

                       9 x 7 = 63

and there is your answer.

:)

4 0
2 years ago
Pablo graphs a system of equations. One equation is quadratic and the other equation is linear. What is the greatest number of p
fredd [130]

Answer:

2

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
Distance between parallel lines y=3x+10 and y=3x-20
Alecsey [184]

1. Take an arbitrary point that lies on the first line y=3x+10. Let x=0, then y=10 and point has coordinates (0,10).


2. Use formula d=\dfrac{|Ax_0+By_0+C|}{\sqrt{A^2+B^2}} to find the distance from point (x_0,y_0) to the line Ax+By+C=0.


The second line has equation y=3x-20, that is 3x-y-20=0. By the previous formula the distance from the point (0,10) to the line 3x-y-20=0 is:

d=\dfrac{|3\cdot 0-10-20|}{\sqrt{3^2+(-1)^2}}=\dfrac{30}{\sqrt{10}}=3\sqrt{10}.


3. Since lines y=3x+10 and y=3x-20 are parallel, then the distance between these lines are the same as the distance from an arbitrary point from the first line to the second line.


Answer: d=3\sqrt{10}.

4 0
3 years ago
Store pays $50 for a pair of shoes. The markup is 25%.
monitta

Answer:

75%

Step-by-step explanation:

7 0
2 years ago
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Answer:

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