2 years ago

Bryce read 15 books last year. this year he read 21. what was the percent increase?

Mathematics

1 answer:

tangare [24]2 years ago

5 0

Answer:

Step-by-step explanation:

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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

Differentiate the function. f(x) = ln(25 sin^2(x))

tigry1 [53]

Use the chain rule.
Let u = 25sin²(x), such that dy/dx = dy/du · du/dx

$\frac{dy}{dx} = \frac{1}{25sin^{2}(x)} \cdot 50cos(x) \cdot sin(x)$
$\frac{dy}{dx} = \frac{2cos(x) sin(x)}{sin^{2}(x)}$

$\frac{dy}{dx} = 2cot(x)$

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3 years ago

At Dorothy's Hair Salon, 4 gallons of shampoo will last 3 weeks. She has 7 gallons of shampoo. How much more must she order if s

Katen [24]

Answer: 4x4=16-7=9gallons

She will order 9 gallons

Step-by-step explanation:

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3 years ago

The volume of a cylinder is 196pi in. cubed and the height of the cylinder is 1 in. What is the radius of the cylinder?

Free_Kalibri [48]

Answer:14in

Step-by-step explanation:

volume(v)=196π

Height(h)=1

Radius=√(v ➗ π x h)

Radius=√(196π ➗ πx1)

Radius=√(196)

Radius=14in

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3 years ago

A box of cereal weighs 0.48 kilograms. What is the weight in pounds to the nearest hundredth of the cereal box

bagirrra123 [75]

Answer:

1.06

I hope this helps :D

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2 years ago