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3 years ago

Anyone know this? I’m having a hard time with it

Mathematics

1 answer:

Orlov [11]3 years ago

6 0

Answer:

75π

Step-by-step explanation:

The formula for volume of a cone is $(r^2h\pi)/3$ . If you substitute 5 into the radius and 9 into the height, you get $(5^2*9\pi)/3=25*9\pi/3=25*3\pi=75\pi$

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1/4(X-10)=2X+1 what is X?

In-s [12.5K]

Answer: $x=-2$

Step-by-step explanation:

$\frac{1}{4}(x-10)=2x+1$

Distribute 1/4

$\frac{1}{4}x-\frac{1}{4}(10)=2x+1$

$\frac{1}{4}x-\frac{5}{2}=2x+1$

add 5/2

$\frac{1}{4}x-\frac{5}{2}+\frac{5}{2}=2x+1+\frac{5}{2}$

$\frac{1}{4}x=2x+\frac{1*2+5}{2}$

$\frac{1}{4}x=2x+\frac{2+5}{2}$

$\frac{1}{4}x=2x+\frac{7}{2}$

Subtract 2x

$\frac{1}{4}x-2x=2x-2x+\frac{7}{2}$

$\frac{1}{4}x-2x=\frac{7}{2}$

$\frac{1-2*4}{4}x=\frac{7}{2}$

$\frac{1-8}{4}x=\frac{7}{2}$

$-\frac{7}{4} x=\frac{7}{2}$

Multiply by the negative reciprocal of -7/4 which is basically inverting the fraction -4/7

$(-\frac{4}{7} )-\frac{7}{4} x=\frac{7}{2}(-\frac{4}{7} )$

$x=-\frac{28}{14}\\ x=-2$

6 0

3 years ago

Find coordinates for x+5y=10 and 3x+5y=0. I need to know how to do this plz explain.

maks197457 [2]

Answer:

(-5,3)

Step-by-step explanation:

Method

There are several ways you can do this, but one of the best ways is to use a graphing coordinate calendar. The most popular one is Desmos Graphing Calculator. I've attached an image of my work below using the system.

Answer

As you can see, both equations intersect at a certain coordinate point. This coordinate point is the point you need for the answer. The intersection is (-5,3).

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

4 0

3 years ago

Read 2 more answers

What is 5 3/8 as a inproper fracon and as a mixed number

ICE Princess25 [194]

$\frac{53}{8}$
To divide 53 by 8 wont be possible so u find a number that when you multiply by 8 it gives u a number closer to 58 which is 8*6=48 i.e 53 divided by 8 is 6 rem, then to get the reminder you subtract 42 from 53 i.e 53–48=5 so the final answer will be 6 and 5/6

3 0

3 years ago

Uation for x and enter your answer in the box below --3x + 7 = -2

Varvara68 [4.7K]

Answer:

x = -3

Step-by-step explanation:

Step 1: Simplify signs

3x + 7 = -2

Step 2: Subtract 7 on both sides

3x = -9

Step 3: Divide both sides by 3

x = -3

8 0

3 years ago

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Ritz can eat 8 apples in 15 minutes. How long does it take Ritz to eat 16 apples at the same rate?

natka813 [3]

The rate Ritz can eat apples is 8/15 apples per minute.

Set the rate (which is measured apples / minutes) equal to 16 apples / t minutes.

(8/15) = (16/t)

Cross multiply.

16*15 = 8t

t = 20

The answer is 30 minutes. You could solve the problem with basic reasoning as well. 16 is twice the number of apples as 8, so the time it takes to eat them will be double 15 minutes.

5 0

3 years ago