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3 years ago

Need help with this please

Mathematics

1 answer:

aleksandrvk [35]3 years ago

7 0

Answer: 9 cm

Step-by-step explanation:

By multiplying 5 by 3, you get 15. this would also apply to finding the other side of the rectangle, where you multiply 3 by 3 to get 9.

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The volume of a cone is 3πx3 cubic units and its height is x units. Which expression represents the radius of the cone’s base, i

dalvyx [7]

Answer:

r=3x

Step-by-step explanation:

The Volume of a Cone

The volume of a cone of radius r and height h is:

$\displaystyle V=\frac{1}{3}\pi hr^2$

We are given the volume of a cone is

$V=3\pi x^3$

Equating:

$\displaystyle \frac{1}{3}\pi hr^2=3\pi x^3$

Multiplying by 3:

$\pi hr^2=9\pi x^3$

Simplifying by pi:

$hr^2=9 x^3$

Since h=x:

$xr^2=9 x^3$

Dividing by x:

$r^2=9 x^2$

Taking square roots:

$r=\sqrt{9 x^2}=3x$

Thus: r=3x

5 0

2 years ago

Read 2 more answers

I need help with math

sergey [27]

Everyone needs help in math

4 0

3 years ago

Please help I'm desperate :(

zubka84 [21]

Answer:

$x=5$

Step-by-step explanation:

Similar Triangles

By looking at the construction of the figure, we can safely assume both triangles are similar, i.e. their internal angles are equal and their sides are proportional. Following the proportion of the heights and bases of both triangles we can set this relationship:

$\displaystyle \frac{45}{36}=\frac{5x}{20}$

Simplifying both fractions

$\displaystyle \frac{5}{4}=\frac{x}{4}$

Solving for x

$x=5$

8 0

2 years ago

8th grade math please help.

GuDViN [60]

Answer:

angle 8 and angle 4

Step-by-step explanation:

angle 4 is the correct answer because it is the same as 8 but on the other side

3 0

3 years ago

Before setting out on a bike ride, each rider was given 5/8 gallons of water to carry with them on the trip. If there are 28 peo

kherson [118]

Answer:

17.5 gallons of water was dispensed

Step-by-step explanation:

Total amount of water dispersed= (Amount of water dispersed to each rider×Number of Riders) where;

Amount of water dispersed to each rider=5/8 gallons

Number of Riders=28

Substituting;

(5/8)×(28)=17.5 gallons

7 0

2 years ago