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guapka [62]
3 years ago
8

The diameter of a vollyball is 15.5 find its radius and volume.Please answer with full process​

Mathematics
1 answer:
Zolol [24]3 years ago
6 0

Answer:

Radius: 7.75; Volume: 142 (rounded to 3 s.f.)

Step-by-step explanation:

The vollyball is a sphere.

The diameter of a sphere is twice as much as its radius.

Radius = 15.5 ÷ 2

           = 7.75

The volume of a sphere is \frac{3}{4} \pir² where r is the radius.

Volume =  \frac{3}{4} \pi(7.75)²

             = 45.046875\pi

             = 142 (rounded to 3 s.f.)

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Find the common difference of the arithmetic sequence –8, -2, 4, ...
ELEN [110]

Answer:

<h3>               d = 6</h3>

Step-by-step explanation:

a_1=-8\\a_2=-2\\a_3=4\\\\d=a_2-a_1=a_3-a_2=...=a_n-a_{n-1}\qquad\qquad \{n\ge2\}\\\\\left{\big{a_2-a_1=-2-(-8)=-2+8=6}\atop\big{a_3-a_2=4-(-2)=4+2=6\quad\ \,}\right\}\implies\ \ d=6

8 0
2 years ago
4) Crystal wants to buy the newest iPhone XS Max that costs $1200.
irina1246 [14]

Answer:

8.75%

Step-by-step explanation:

If she pays $135 eight times then she pays a total of 135 x 8 = $1080.

She had a down payment of $225, so that added on becomes $1305.

1305/1200 is 1.0875, which is an increase of 0.0875 over the original.

0.0875 x 100 = 8.75% increase.

4 0
2 years ago
An orange has about 1/4 cup of juice. How many oranges are needed to make 2 1/2 cups of juice?
Vesna [10]

Answer:

10 oranges

Step-by-step explanation:

4 oranges are needed to make one cup. 2 cups is 8 oranges and 1/2 cup is 2 oranges

8 0
2 years ago
Tony separates a number of paintbrushes, x, into 3 equally sized groups. He claims that this is the same as making a group 1/3 t
DochEvi [55]

Answer:

Size of each group = \frac{x}{3}

Step-by-step explanation:

Total number of paint brushes = x

Since each the three groups are equally sized, to get the number of paintbrushes in a group, we will have to divide the total number of paint brushes by 3

∴ We have, number of paint brushes in a group = \frac{Total number of paintbrushes}{3}\\

= \frac{x}{3}

this is also the same thing as saying \frac{1}{3}×\frac{x}{1}

This shows that the size of the new group is the same as \frac{1}{3} the size of the original group

4 0
3 years ago
Please help me find the nth term of this sequence 0, 3, 8, 15, 24
Setler [38]

Answer:

80

Step-by-step explanation:

0,   3,   8,   15,   24,  <u>35,</u>   <u>48,</u>   <u>63,</u>  <u>80</u> which is the nth term

first step you have to find how many steps the sequence was going with.

examples= from 0 to 3 the steps were 3

                =from 3 to 8 the steps were 5

                = from 8 to 15 the steps were 7

you will recognize that the steps the sequence is going with is odd numbers.

so you will use the odd numbers until you find what you need. which leads you to 80 which is the nth number in the sequence.

7 0
3 years ago
Read 2 more answers
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