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tatyana61 [14]
3 years ago
9

Last year Billy weighed 75kg. This year he weighed 90kg. With what percentage did his weight increase. SHOW ALL WORK!!!

Mathematics
1 answer:
k0ka [10]3 years ago
8 0

Answer:

20%

Step-by-step explanation:

90 - 75 = 15

15 ÷ 75 = 0.2

0.2 x 100% = 20%

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Answer:

39.25 cubic feet of paint will be needed by Ellis.

Step-by-step explanation:

Step-by-step explanation:

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The volume of a cylinder of radius r and height h is given by:

V = \pi r^2h = 3.14r^2h

How much paint will Ellis need to paint all the surfaces of the 10 fenceposts?

This is the combined volume of these 10 fenceposts.

They are each 5 feet tall and have a diameter of 1 foot.

Radius is half the diameter, so r = \frac{1}{2} = 0.5. Also h = 5

10 fenceposts:

Each has the same volume, so:

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6 0
1 year ago
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Naya [18.7K]

Answer:

Step-by-step explanation:

Plug into distance formula:

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sqrt( ((x2 - x1)^2) + ((y2 - y1)^2))

sqrt( ((3 - 5)^2) + ((-4 + 2)^2))

sqrt( 4 + 4)

sqrt8 ≈ 2.8 OR

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4 0
1 year ago
Evaluate the given expression. Subscript 5 Baseline P Subscript 2 a. 40 c. 25 b. 32 d. 20
Leto [7]

Answer:

d. 20

Step-by-step explanation:

The given question implies 5 permutation 2, i.e _{5}P_{2}.

But,

_{n}P_{r} = \frac{n!}{(n - r)!}

So that for _{5}P_{2}, n = 5 and r = 2.

_{5}P_{2} = \frac{5!}{(5 - 2)!}

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Cancel out 3 and 2 with respect to the numerator and denominator.

_{5}P_{2} = 5 * 4

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Therefore,

_{5}P_{2} = 20

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3 years ago
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Answer:

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8 0
2 years ago
If you have 66 data observations in a sample, how many classes (bins) does the sturges' rule recommend for you to construct a fr
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According to Sturge's rule, number of classes or bins recommended to construct a frequency distribution is k ≈ 7

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Given,

n = 66

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According to Sturge's rule, the optimal number of class intervals can be determined by using the equation:

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Learn more about Sturge's rule here: brainly.com/question/28184369

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8 0
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