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Vinil7 [7]
3 years ago
15

4x2 + 9y2 = 72 2x - y = 4 Which of the following is a solution to the system shown?

Mathematics
1 answer:
Zina [86]3 years ago
5 0
Im not sure but i think the answer is x=34/9 and y=32/9
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I'm doing daily spiral review 4-1 A building has 8 same- sized apartments. The area of 1 apartment is 725 square feet .Let t be
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The slope is 100/1 and represents how much the price go up per unit manufactured.
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7 0
3 years ago
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Can I get some help please 11 and 12
Xelga [282]
#11 is 2 ounces because there are 16 ounces in 1 pound and if u add all the #rs you get 32, divide by 16 and u get 2.
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6 0
4 years ago
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Can yall tell me what im doing wrong? for 50 points.
Aloiza [94]

Crackdown result: <u>DFBG</u>

\sf slope \ (m): \dfrac{y_2-y_1}{x_2-x_1}

1)

\rightarrow \sf m = \dfrac{-13-19}{-1-3}

<u>simplify</u>

\rightarrow \sf m=8

2) take two points: (-1,-1), (0, 1)

\rightarrow \sf m = \dfrac{1-(-1)}{0-(-1)}

<u>simplify</u>

\rightarrow \sf m = 2

3) take two points: (1, -8), (2, -16)

\rightarrow \sf m = \dfrac{-16-(-8)}{2-1}

<u>simplify</u>

\rightarrow \sf m = -8

4)

\rightarrow \sf m = \dfrac{8-(-10)}{0-9}

<u>simplify</u>

\rightarrow \sf m = -2

4 0
2 years ago
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One room of an apartment is 12 ft. by 15 ft. The walls are 9 1/2 feet high. How much paint will you need to paint the four walls
Svetlanka [38]

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-- The front wall and the back wall are each (12 x 9) = 108 square ft.

-- The total area of all 4 walls is (135 + 108 + 135 + 108) = 486 square ft.

-- You need 1 gallon of paint for every 425 square ft.
How many times will you need to cover 425 square ft ?

         486 / 425 = 1.144 times

-- So you need  1.144 gallons in order to paint all 4 walls.
When rounded to the nearest 1/10th gallon, the number is <em>1.1 gallons</em>.
<em>That choice is not found</em> on the list of choices given with the question.

-- Even so, that figure of "1.1 gallons" is probably a little more than you
actually need in order to paint the 4 walls . . .  That quantity of paint includes
enough to paint over the door, the windows, and all of the electrical outlets ! 


8 0
3 years ago
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