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3 years ago

PLEASE HELP ME PLEASE

Mathematics

1 answer:

Ray Of Light [21]3 years ago

5 0

Answer:

The computer loses 50%, percent of its value each year.

Step-by-step explanation:

See the graph attached.

A computer is sold for a certain price and then its value changes exponentially over time.

It is clear from the graph that at t = 0, the price was $500, then at t = 1 year, the price was $250 and at t = 2 years, the price was $125 and at t= 3 years, the price was $62.5 and so on.

Therefore, the computer loses 50%, percent of its value each year. (Answer)

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a cone has a volume of 1,570in3. If the height of the cone is 15 inches. Calculate the radius of the cone?

spin [16.1K]

Answer:

approximately 10

Step-by-step explanation:

Volume = 1/3h times $\pi$ times radius square

1570 = 1/3 x 15 x 22/7 x $r^{2}$

1570 = 5 times $\frac{22}{7}$ times $r^{2}$

1570 = 15.71 $r^{2}$

$\frac{1570}{15.71}$ = $\frac{15.71 r^{2}}{15.71}$

99.9 = r^2

$\sqrt{99.9}$ = r

≅10

5 0

3 years ago

Luda [366]

Answer:

x = 10

Step-by-step explanation:

Q is the midpoint of PR: PQ = QR

4x + 5 = 2x + 25

2x = 20

x = 10

3 0

3 years ago

The mean annual inflation rate in the United States over the past 98 years is 3.37% and has a standard deviation of approximatel

Ksenya-84 [330]

Answer:

38.59% probability that inflation rate will be below 1.9% in 2019

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 3.37, \sigma = 5$