mhagen26

10 Questions
0 Answers

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701

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help me survive this class

A hummingbird has a 85% probability of surviving the 450 mile migration trip to its favorite breeding ground. Compute the mean of the random variable, number of birds that survive migration, if 280 birds were randomly selected.

mhagen26 Sep 30, 2020

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632

1

+36

f(x)= ?

Find a formula for f(x), an exponential function such that f(2)=1/8 and f(-1)=8.

mhagen26 Sep 30, 2020

0

486

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+36

prob n stat help

According to the College Institute, 55% of freshman entering a 4-year college in 2007 were female. Compute the standard deviation of the random variable, number of female freshman, if 720 students were randomly selected.

mhagen26 Sep 30, 2020

0

707

1

+36

The initial value (at year t=0) of a quantity Q is 5.27. The quantity Q is increasing by 0.7% per year. (a) Write

The initial value (at year t=0) of a quantity Q is 5.27. The quantity Q is increasing by 0.7% per year.
(a) Write a formula for Q as a function of t.
Enter the exact answer.
Q=
(b) What read more ..

mhagen26 Sep 27, 2020

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629

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+36

In 2014, the population of a country was 100 million and growing at a rate of 2.0% per year. Assuming the percentage growth rate

In 2014, the population of a country was 100 million and growing at a rate of 2.0% per year. Assuming the percentage growth rate remains constant, express the population in millions, P, as a function of t, the read more ..

mhagen26 Sep 27, 2020

0

942

1

+36

An investment decreases by 12% per year for 5 years.

An investment decreases by 12% per year for 5 years.
By what total percent does it decrease?
Round your answer to two decimal places.

mhagen26 Sep 27, 2020

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602

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The value, V, of a $200,000 investment that earns 2% annual interest is given by V=f(t) where t is in

The value, V, of a $200,000 investment that earns 2% annual interest is given by V=f(t) where t is in years.
How much is the investment worth in 3 years?

mhagen26 Sep 27, 2020

0

563

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+36

is this function exponential (q(r) = -4/3^r ?

is this function exponential (q(r) = -4/3^r ?

if yes,
write the function in the form f(r)=a⁢b^r and enter the values for a and b. <read more ..

mhagen26 Sep 27, 2020

0

645

1

+36

precalc help: Find a simplified formula for the difference quotient

f (x +h) - f(x)/h
f(x) = x^2 + 4x

f (x +h) - f(x)/h =? read more ..

mhagen26 Sep 25, 2020