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Ede4ka [16]
3 years ago
12

Bella pushes a box to her right. In which direction does the box need to move for Bella to have done work n on it

Mathematics
2 answers:
Luden [163]3 years ago
8 0

Answer:

left

Step-by-step explanation:

if she pushes it right then she would have to push it left back to her to work on it

KIM [24]3 years ago
3 0

It needs to move to the left

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Answer:

See below

Step-by-step explanation:

Q1. if a counting number is selected at random from a set of whole number less than or equal to 20 find the probability of getting:

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<u>Whole numbers less than or equal to 20</u>: A\leq 20, A \subset \mathbb{Z}_{\ge 0}  \\\implies A=\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20\}

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From the set A, the prime numbers are 2, 3, 5, 7, 11, 13, 17, 19.

Once we have 21 numbers in total and 8 prime numbers, the probability is:

$P=\frac{8}{21} \approx 40\%$

<u>B. Composite numbers</u>

From the set A, the composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20.

Once we have 21 numbers in total and 11 composite numbers, the probability is:

$P=\frac{11}{21} \approx 52\%$

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From the set A, the numbers square of 2 are 0, 1, 4, 9, 16.

\sqrt{0} =0

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\sqrt{4} =2

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Once we have 21 numbers in total and 5 numbers square of 2 , the probability is:

$P=\frac{5}{21} \approx 24\%$

Q2. The opposite angle of acyclic quadrilaterals is in the ratio of 2:3. Find the degree measure of each opposite angle?

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2x+3x=180 \implies 5x=180 \implies x=36

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x \in \mathbb{Z}\\

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y=mx+b

m: \text{slope}

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I think it is a compressed spring.


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