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2 years ago

15

A rectangle has a length of 4 feet and a perimeter of 16 feet. What is the perimeter of a similar rectangle with a length of 9 f

eet?

1 answer:

kompoz [17]2 years ago

7 0

The answer is 42 feet I use substitution and subtract by 8

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Help !!! please show work so i know how to do it :)))

satela [25.4K]

Answer:

70

Step-by-step explanation:

the red lines mean the two sides are equal

so its an isosceles triangle meaning the two angles other than the 40° one are equal

the inner angles of a triangle must add up to 180

so 180-40 = 2x

140 = 2x

x = 140/2 = 70

6 0

2 years ago

Read 2 more answers

The variance of a stock's returns can be calculated as the:

Tamiku [17]

Answer:

The correct option is b.

Step-by-step explanation:

The formula for standard deviation is

$\sigma^2=\frac{\sum {(x-\overline{x})^2}}{n}$

where, $\overline{x}$ is mean of the data and n is number of observation.

The variance of a stock's returns can be calculated by the above formula.

Variance of stock's returns is the average value of squared deviations from the mean.

Therefore the correct option is b.

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3 years ago

julia has 80$.she wants to purchase a nail paint set for 16$.she spends the rest of her money on earrings.each pair of earrings

EastWind [94]

The answer will be 74 hope this help :)

6 0

2 years ago

Please help me guys with this problem.

Anna71 [15]

I think the answer is 152 but I’m not 100% sure

7 0

2 years ago

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A laptop has a listed price of $899.98 before tax. If the sales tax rate is 7.25%, find the total cost of the laptop with sales

Tems11 [23]

Answer:

$965.23

Step-by-step explanation:

899.98 x .0725 = 65.25

899.98 + 65.25 = 965.23

- Hope this helps! If you need a further explanation please let me know.

3 0

2 years ago