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2 years ago

WILL GIVE BRAINEST If f(x)=5x^2-3....

Mathematics

1 answer:

AlladinOne [14]2 years ago

3 0

(f−g)(x)=f(x)−g(x)
plug every thing in 5x2−3−(x2−4x−8)
then solve 5x2−3−x2+4x+8
=4x2+4x+5

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A cylinder has a height of 4 inches greater than the radius of its base. Find the radius and the height to the nearest inch if t

anastassius [24]

Answer:

$h=5in, r=1in$

Step-by-step explanation:

The volume of a cylinder is:

$V=\pi*r^2*h$

where $r$ is the radius and $h$ is the height.

The height is 4 inches greater that the radius, so:

$h=r+4in$

Substituting this in the formula for volume:

$V=\pi*r^2*(r+4)$

the volume is $V=5\pi in^3$

thus:

$5\pi in^3=\pi*r^2*(r+4in)$

Dividing everything between pi:

$5in^3=r^2*(r+4in)$

$5in^3=r^3*+4r^2$

We can see that the solution for this is $r=1in$

since $(1)^3*+4(1)^2=1+4=5$

We have the radius, now we find the height:

$h=r+4in=1in + 4in = 5in$

$h=5in, r=1in$

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2 years ago

Read 2 more answers

The chart below shows the average number of movies seen per person in selected countries. Use equal intervals to make a frequenc

NARA [144]

To make a frequency table, you will need to find the lowest and highest average number of movies.

Numbers go from 0.5 to 4.5.
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2 years ago

You spent $145 purchasing 3 student tickets and 7 adult tickets. Adult tickets cost $5 more than a student ticket. Find the cost

vova2212 [387]

Answer:

$11 and $16

Step-by-step explanation:

let x be the cost of a student ticket then an adult ticket is x + 5 , then

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10x = 110 ( divide both sides by 10 )