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bearhunter [10]
4 years ago
13

The area of a rectangle is 18 square centimeters, and its perimeter is 22 centimeters. Find the dimensions of the rectangle.

Mathematics
1 answer:
Softa [21]4 years ago
5 0

Answer:

2, 9, 2, 9

Step-by-step explanation:

length = x

width = y

xy = 18

2x + 2y = 22

Substitute the second equation into the first. to do that, rewrite the equation

2x + 2y = 22 becomes y = -x + 11

Then use the new equation and substitute it with the y in the first equation.

x(-x + 11) = 18

-x^2 +11x - 18

Divide by -1

x^2 -11x + 18 = (x - 2) (x - 9)

x = 2, 9

when x = 2, y = 9 and when x = 9, y = 2 so they are interchangeable. the sides are 2, 9, 2, and 9.

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Answer:

The bottom left choice is the answer

Step-by-step explanation:

Estimate

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PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGHT.
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Answer:

Step-by-step explanation:

Triangle HIJ is a right angle triangle.

From the given right angle triangle

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HI represents the opposite side of the right angle triangle.

To determine IJ, we would apply Sine trigonometric ratio. It is expressed as

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4 0
3 years ago
If a rectangle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional shape? An i
kvasek [131]

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3 0
3 years ago
Read 2 more answers
#19 4=ax - 14 Need asap
Vika [28.1K]

Answer

4 = ax - 14

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Step-by-step explanation:

4 0
2 years ago
Quadrilateral DEFT has vertices D(2, 7), E(-4, 4), F(5, -6), and T(11, -3). What is the best name for quadrilateral DEFT?
Hoochie [10]

Answer:

parallelogram

Step-by-step explanation:

slope of DE = (4-7) / (-4 - 2) = 1/2

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DE // FT

slope of EF = (-6 - 4) / (5 - -4) = - 10/9

slope of DT = (-3 - 7) / (11 - 2) = - 10/9

EF // DT

7 0
3 years ago
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