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docker41 [41]
3 years ago
13

A child rolls a ball on a level floor 3.6 m to another child. if the ball makes 18.0 revolutions, what is its diameter?

Mathematics
1 answer:
victus00 [196]3 years ago
3 0
To find the diameter, find the circumference, i.e the length covered in one revolution, and then subject the diameter from formulas.

Circumference = 3.6 ÷ 18 = 0.2m = 2πr

πr = 0.2 ÷ 2 = 0.1

r = 0.1 ÷ (22/7) = (0.1 * 7) ÷ 22 = 0.7 ÷ 22

r = 0.0318

Diameter = 2r

Diameter = 2 * 0.0318 = 0.0636m ...//Ans ...
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GenaCL600 [577]

An arrangement of numbers that follow a pattern is a: Sequence.

<h3>What is a sequence?</h3>

A sequence refers to the arrangement of numbers in a specific number. For instance, the numbers could be made to increase in twos or threes or any other designated pattern.

The following numbers follow a sequence: 2, 4, 6, 8. We can see that the succeeding numbers increase by two. Thus, the correct answer to the question is "sequence."

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5 0
2 years ago
The pupils of a school came to school by bus by bicycle and on foot . 48% of the pupils came to school by bus and 24% came by bi
yKpoI14uk [10]

Answer:

28%

Step-by-step explanation:

total percent is 100%

we could rewrite the equation as:

48% + 24% + f = 100%

72% + f = 100%(subtract 72 on both side)

f = 28%

5 0
3 years ago
Solve: (x ÷ 4) + 8 = 38
Rainbow [258]
First you have to rewrite the equation:
(x ÷ 4) + 8 = 38

Second you have to write the division as fraction:
(¼x) + 8 = 38

Third you have to take off the unecessary bracket:

¼x + 8 = 38

Fourth multiply 8 and 38 by 4
x + 32 = 152

Fifth step move the constant to the right hand and change the sign.
x = 152 - 32

Then subtract:

x = 120

Hope this helps :))
5 0
3 years ago
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weqwewe [10]

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7 0
1 year ago
Write quadratic equation whose roots are 1 and -3 and whose leading coefficient is 4
Mila [183]

Answer:

4x^2 + 8x - 12 = 0.

Step-by-step explanation:

We first write it in factor form.

4(x - 1)(x + 3) = 0

4(x^2 + 2x - 3) = 0

4x^2 + 8x - 12 = 0 (answer).

3 0
3 years ago
Read 2 more answers
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