Hihi , please help if able.

Mathematics

1 answer:

qaws [65]2 years ago

7 0

Answer:

The correct answer is Choice C.

Step-by-step explanation:

When figuring out the perimeter, we need to count the number of sides. There are 8 sides in total. 5 sides have length labeled 'x' . 2 sides have the length labeled 'y' . Only 1 side has the length labeled 'z' .

In order to put that into an expression, just add the sides up.

5 sides of z + 2 sides of y + 1 side of z

Therefore, the expression that represents the perimeter of the figure is 5x + 2y + z.

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when Elena 's car moves forward such that each tire make one full rotation ,the car has traveled 72 inches .how many full rotati

Marat540 [252]

It will take 5 full rotations for Elena's car to travel ten yards

explanation: 10 yards=30 feet, and there are 12 inches in one foot. multiply 30 by 12. once you do that, you get 360. next, divide 360 by the 72 inches in each full rotation. 360/72=5. so the answer is 5 full rotations

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2 years ago

Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest t

vitfil [10]

Answer: The mean of the data is 433.75, variance of the data is 99667.19 and the standard deviation of the data is 315.7011.

Explanation:

The given data is 900, 35, 500 and 300.

The number of observation is 4.

Formula of mean is,

$\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}$