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motikmotik
3 years ago
7

How do you do 20x-10y=50 10x-15y=-5 in system of equations

Mathematics
1 answer:
swat323 years ago
8 0

Answer:The point form would be (4,3) and the equation form would be x=4,y=3

Step-by-step explanation:

can I get marked brainliest

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Write an equation for the description.A number x increased by 13 is 116​
seropon [69]

Answer:

X+13=116

Step-by-step explanation:

8 0
3 years ago
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Determine the sign of the some of negative 8 + 11
AVprozaik [17]

Answer:

positive 3

Step-by-step explanation:

-8 + 11 is 3. the other way you can think of it is by subtracting 8 from 11.

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3 years ago
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does somebody knows how to do this one?
vlada-n [284]

Answer:

Step-by-step explanation:

To find the area subtract the area of the semicircle from the area of the rectangle.

Although the line isn’t there, if you imagine there is one, then you will see that you form a rectangle which is the same line as the semicircle’s diameter.

The area of rectangle is:

⇒ A = lw

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⇒ A = 112cm^{2}

The area of the semicircle;

⇒ A = \frac{1}{2}\pi r^{2}

⇒ A = \frac{1}{2}\pi (7)^{2}

*Note here that the radius is half the diameter, so it is 7cm, not 14cm

⇒ A = 76.97cm^{2}

Finally subtract the two areas;

⇒ A = 112 - 76.97

⇒ A = 35.03cm^{2}

6 0
2 years ago
Solve, cross multiply<br><br>(x+2) / 2x = 3/2
bonufazy [111]

Answer:

1

Step-by-step explanation:

x+2/2x=3/2

2x×3=2x+4

6x=2x+4

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5 0
2 years ago
HELP BRAINLIEST! I think its none of the above
mamaluj [8]

Answer:

180 degrees

Explanation:

So if it was 90 degrees it would be the same thing just fliped. 180 means that it did a half a rotaion so it would be the mirrored of the original object. That is what we see the second figure is mirrored of the other. 90 degrees also would be different.

<h2><u>Answer: 180 degrees</u></h2>

7 0
3 years ago
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