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likoan [24]
3 years ago
8

POSTING THIS AGAIN PLEASE I NEED HELP I CAN'T FAIL THIS TEST

Mathematics
1 answer:
kotegsom [21]3 years ago
4 0

Answer:

729 : 9 = 80 +1 is correct

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Read 2 more answers
Your are designing a rectangular birthday card for a friend. You want the card's length to be 1 inch more than twice the card's
klemol [59]

The width of the card to the nearest tenth of an inch is 6.15 inches

<h3>Area of rectangle</h3>

  • Width = x
  • Length = 2x + 1
  • Area = 88 square inches

Area of a rectangle = Length × Width

88 = (2x + 2) × x

88 = 2x² + 2x

2x² + 2x - 88 = 0

x = -b ± √b² - 4ac / 2a

= -2 ± √2² - 4(2)(-88) / 2(2)

= -2 ± √4 - (-704) / 4

= -2 ± √708 / 4

= -1/2 ± √177/2

x = 6.15 or -7.15 inches

The width of the rectangle can not be negative, so, 6.15 inches is the width.

Learn more about rectangle:

brainly.com/question/13048427

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5 0
2 years ago
Fill in the blanks below in order to justify whether or not the mapping shown represents a function.
Hitman42 [59]

Answer:

not a function.

Step-by-step explanation:

the x value/set a has to have 1 line from each but the -3 has 2 lines, therefore not a function

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3 years ago
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