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3 years ago

Find the value of f(-8).

Mathematics

1 answer:

fredd [130]3 years ago

5 0

Answer:

-8f

Step-by-step explanation:

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Which equation is a radical equation.

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A radical equation is an equation in which a variable (ex. x, y, a, v) is under a radical sign. The only equation that has a variable under a radical (x) is the second option. There is an x next to the 2 under the radical.

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3 years ago

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Omgggg help me for brainly what’s 4 x 5 divided by 2

yanalaym [24]

Answer:

Step-by-step explanation:

$\frac{4 x 5}{2}$

4 x 5 = 20

$\frac{20}{2}$ = 10

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2 years ago

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The radius of the base of a cylinder is increasing at a rate of 7 millimeters per hour. The height of the cylinder is fixed at 1

Ilya [14]

Answer:

The rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

Step-by-step explanation:

Given:

Rate of increase of base of radius of base of cylinder = 7 mm/hr

Height of cylinder = 1.5 mm

Radius at a certain instant = 12 mm

To find rate of change of volume of cylinder at that instant.

Solution:

Let $r$ represent radius of base of cylinder at any instant.

Rate of increase of base of radius of base of cylinder can be given as:

$\frac{dr}{dt}=7\ mm/hr$

Volume of cylinder is given by:

$V=\pi\ r^2h$

Finding derivative of the Volume with respect to time.

$\frac{dV}{dt}=\pi\ h\ 2r\frac{dr}{dt}$

Plugging in the values given:

$\frac{dV}{dt}=\pi\ (1.5)\ 2(12)(7)$

$\frac{dV}{dt}=252\pi$

Using $\pi=3.14$

$\frac{dV}{dt}=252(3.14)$

$\frac{dV}{dt}=791.28\ mm^3/hr$ (Answer)

Thus rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

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3 years ago

a merchant gains 15% by selling an article for $ 150. by how much does he sell it to double his profit ?

viva [34]

Answer:

30/100×150=

24/5%, that is the answer

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A $350 purchase is discounted 15%. You use a 20% coupon. What is the total paid?

borishaifa [10]

Answer:

238 should be the answer

Step-by-step explanation:

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