Which expression represents the perimeter of the rectangle below

Mathematics

1 answer:

-BARSIC- [3]2 years ago

6 0

Answer:

12+y+x+x+x+12+y+x = 24+2y+4x; which is A

Step-by-step explanation:

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A number decreased by 18 is equal to the product of the number and 7.

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Define x:
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Let the number be x

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Construct Equation :
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x- 18 = 7x

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Take away x from both sides :
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-18 = 7x - x

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Combine like terms :
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-18 = 6x

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Switch sides :
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6x = -18

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Divide by 6 on both sides :
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x = -3

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Answer; The number is -3.
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3 years ago

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1. m=1/2 b=4 y=1/2x+4
2. m=-1/2 b=-3 y=-1/2x-3
3. m=-3/2 b=-1 y=-3/2x-1
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Maria is 4 ft 2in tall. To find the height of a flagpole, she measured her shadow and the pole's shadow . What is the height h o

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Answer:

25 ft

Step-by-step explanation:

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3 years ago

Which of the following statements correctly explains the meaning of the term "95% confidence" in the confidence statement? The i

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Answer:

The interval 52% to 58% is based on a procedure that includes the true population value 95% of the time.

Step-by-step explanation:

x% confidence interval:

A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.

95% confidence

We are 95% sure that the interval contains the true mean/proportion, and thus, the correct option is:

The interval 52% to 58% is based on a procedure that includes the true population value 95% of the time.

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A quality control inspector has drawn a sample of 10 light bulbs from a recent production lot. Suppose 20% of the bulbs in the l

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Answer:

The probability is 0.0008.

Step-by-step explanation:

Let X represents the event of defective bulb,

Given, the probability of defective bulb, p = 20 % = 0.2,