3 years ago

Please help as soon as possible thank you

Mathematics

1 answer:

musickatia [10]3 years ago

3 0

Answer:

what do you need help with

Step-by-step explanation:

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maria [59]

The angle is 90° degrees.

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4 years ago

A cone has a radius of 5 ft and a height of 15 ft. It is empty and is being filled with water at a constant rate of 15 15 ft 3 f

kvasek [131]

Answer:

$\frac{dr}{dt}=0.11062ft/sec$

Step-by-step explanation:

From the question we are told that:

Radius $r=5ft$

Height $H=15ft$

Rate $R=15ft/3sec =5ft/s$

Surface Radius $R_{surf}=2.2ft$

Generally the equation for Volume is mathematically given by

$V=\frac{1}{3}\pi*r^2h$

Since radius to height ratio gives

$\frac{r}{h}=\frac{5}{15}$

$\frac{r}{h}=\frac{1}{3}$

$h=3r$

Therefore

$V=\frac{1}{3}\pi*r^2(3r)$

$V=\pi r^3$

Generally the equation for Change of Volume is mathematically given by

$\frac{dv}{dt}=\pi \frac{d}{dt}(r^3)$

$\frac{dv}{dt}=\pi 3*r^2 \frac{dr}{dt}$

$\frac{dv}{dt}=\pi 3*(2.2)^2 \frac{dr}{dt}$

$\frac{dr}{dt}=\frac{5}{45.62}$

$\frac{dr}{dt}=0.11062ft/sec$

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3 years ago

What is "the quotient of a number and 12." In number form?

kykrilka [37]

Answer:

x/12

Step-by-step explanation:

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3 years ago

What time is it when the small hand is in between the 8 and 9 and when the big hand is at the 6?

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The time would be 8:30

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3 years ago

Find the perimeter of the rectangle? Needs to be in standard form

vladimir2022 [97]

Answer:

<u>6b - 4a + 22 units</u>

Step-by-step explanation:

Perimeter = 2(length + width)

= 2(3b - 4a + 5 + 6 + 2a)

= 2(3b - 2a + 11)

= <u>6b - 4a + 22 units</u>

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2 years ago