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givi [52]
2 years ago
12

Show all of your work. solve this system by ELIMINATION! this is most of my grade please help if you know!

Mathematics
1 answer:
Andreyy892 years ago
7 0
If my handwriting sucks; (-2x+7y=3
3x-7y=-1)
=
(7y=3+2x
3x-7y=-1)= 2

3x2-7y=-1=1

Answer: (x,y) = (2,1)

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0.34

Step-by-step explanation:

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34 / 100 = 0.34

0.34 is the decimal form of the fraction 34 / 100.

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2 years ago
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1. Two students went to McDonald's. They each bought the same snack, which included a shake
Sindrei [870]

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12-2=10 b=10

Step-by-step explanation:

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Fiesta28 [93]
A. 30 sixth graders

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5 0
2 years ago
Mrs. Habib has 46.25 feet of border for a bulletin board for her classroom. the board is 37.5 feet tall and 8.3 feet wide. how m
Luba_88 [7]

Answer:

Mrs. Habib will have 22.25 feet of border left after she puts border around the board.

Step-by-step explanation:

You must find the perimeter of the board and subtract it from the amount of border she has to find how much she will have left after she uses it. The formula for perimeter is P=2(l+w), where l= the length of the board, and w= the width of the board. You will add those together and multiply them by 2 because there are 4 sides to a rectangle. That means this equation will look like:

P=2(8.25+3.75)

Now you can just solve for the perimeter.

P=2(12)

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The perimeter is 24 feet. That means it will take 24 feet of border to cover her board. In order to find out how much she'll have left over, just subtract 24 from the total amount of border she has.

46.25-24=22.25

Therefore Mrs. Habib will have 22.25 feet of border left over after she covers the bulletin board.

7 0
2 years ago
How do you find the surface area and volume of a cylinder ​
galina1969 [7]
<h2>Answer:</h2>

The surface area of a shape is the sum of the area of all of its faces. To find the area of a cylinder, you need to find the area of its bases and add that to the area of its outer wall. The formula for finding the area of a cylinder is A = 2πr2 + 2πrh.

<h2>Step-by-step explanation:</h2>
  • Surface area of a cylinder = 2πr 2 + 2πrh
  • Volume of a cylinder = πr 2 h
  • You need to know the radius and height to figure both the volume and surface area of a cylinder.
  • Answers for volume problems should always be in cubic units.
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