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3 years ago

Answer quick for brainliest

Mathematics

1 answer:

andre [41]3 years ago

4 0

Answer:

$40 in interest and $240 in total

Step-by-step explanation:

find 5% of 200: 200 x 0.05=10

it's for four years, so multiply times four: 10x4=40

that's the amount of interest so now add that to her original 200 and you get 240!

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Which function has an inverse that is also a function?

natali 33 [55]

Answer:

Which function has an inverse that is also a function

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3 years ago

Gravel is being dumped from a conveyor belt at a rate of 15 ft3/min, and its coarseness is such that it forms a pile in the shap

gayaneshka [121]

Answer:

0.13 ft/min

Step-by-step explanation:

We are given that

$\frac{dV}{dt}=15ft^3/min$

We have to find the increasing rate of change of height of pile when the pile is 12 ft high.

Let d be the diameter of pile

Height of pile=h

d=h

Radius of pile,r= $\frac{d}{2}=\frac{h}{2}$

Volume of pile= $\frac{1}{3}\pi r^2 h=\frac{1}{12}\pi h^3$

$\frac{dV}{dt}=\frac{1}{4}\pi h^2\frac{dh}{dt}$

h=12 ft

Substitute the values

$15=\frac{1}{4}\pi(12)^2\frac{dh}{dt}$

$\frac{dh}{dt}=\frac{15\times 4}{\pi(12)^2}$

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7 0

3 years ago

I WILL GIVE BRAINLIEST

gtnhenbr [62]

Answer: B
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7 0

3 years ago

Read 2 more answers

Zebras migrate in a circle with a round trip of about 300 miles. They travel at 64 km/h. How many hours does it take zebra to do

Tresset [83]

Answer:

7.5 hours (7 hours and 30 minutes)

Step-by-step explanation:

ok Let's start with 64km/h.

1.6 km=1 mile,

64÷1.6=40miles

so 64km/h changes into 40miles/hour.

Zebras's round trip =300miles,

300/40=7.5

so answer is 7.5 hours.

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3 years ago

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Alexxx [7]

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Step-by-step explanation:

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