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3 years ago

4% less than 780 is? please answerr

Mathematics

1 answer:

Alenkinab [10]3 years ago

3 0

I think the answer is 748.8 I’m not a 100% sure

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A 1000 gallon tank, initially full of water, develops a leak at the bottom. Given that 300 gallons of water leak out in the firs

Over [174]

Answer:

option F

Step-by-step explanation:

given,

capacity of tank = 1000 gallon

volume of water leak = 300 gallon

time = 30 min

water is leaking at the rate

formula used

$A = B e^{-kt}$

At t = 0 A = 1000 gallons

$1000= B e^{-k\times 0}$

B = 1000

$A = 1000 e^{-kt}$

at t = 30 A = 700

$700= 1000 e^{-k\times 30}$

$e^{-k\times 30}=0.7$

taking ln both side

$-k\times 30=ln(0.7)$

$k=-\dfrac{ln(0.7)}{30}$

now,

$A = 1000 e^{\dfrac{ln(0.7)}{30}t}$

$A = 1000\times 0.7 e^{\dfrac{t}{30}}$

$A = 700 e^{\dfrac{t}{30}}$

hence, the correct answer is option F

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4 years ago

A financial planner is examining the portfolios held by several of her clients. Which of the following portfolios is likely to h

Elena-2011 [213]

Answer: The portfolio with U.S. stocks only is likely to have the smallest standard deviation.

Step-by-step explanation: Standard deviation is a measure of volatility in the data, in other words, the difference between the data points. Large differences among data points lead to a higher value of standard deviation.

A portfolio with a higher proportion of international stocks is more likely to have a higher standard deviation, as international stocks may come from many different economies, thus may be affected by different economic conditions and yield different rate of returns. On the contrary, a portfolio with U.S. stocks only should get a lower value of standard deviation since all of the stocks should be uniformly affected by the economic condition of the same economy.

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3 years ago

The table shows the growth, in centimeters, of plants in two different soils after two weeks.

kodGreya [7K]

it Might be D. Soil B had greater growth because its data have a greater median.

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3 years ago

Read 2 more answers

A sphere has a radius of 12 meters. What is the approximate volume of the sphere? Use 3.14 for π . Round your answer to the near

creativ13 [48]

Pretty sure its 7235 cubic meters

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