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Zanzabum
3 years ago
6

Please Help..........................

Mathematics
2 answers:
jasenka [17]3 years ago
8 0
The exact circumference is 60ft
uranmaximum [27]3 years ago
5 0
C = 2πr
C= 2 * 10 *π
C= 20π
answer is 20π ft (second choice)
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Joe has a bag containing 8 red sweets, 9 yellow ones and 11 green. He takes out a sweet and eats it, he takes out a second sweet
gizmo_the_mogwai [7]

Answer:

2/27

Step-by-step explanation:

This is a probability question and we are asked to estimate a particular probability. We proceed as follows:

The total number of sweets is given as 8 + 9+ 11= 28 sweets

He takes out a sweet to eat, the probability of this being a red sweet would be P(r1) = 8/28 = 2/7

Now he takes another sweet, we are asked to calculate the probability that this sweet is also red. Now after taking the first sweet, the number of sweets is now 27, while the number of red sweets is now 7. Hence the probability of having a red sweet taken in the second case would be p(r2) = 7/27

Now, the probability of both being red sweets can be calculated by multiplying both = 7/27 * 2/7 = 2/27

6 0
3 years ago
A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean
iogann1982 [59]

Answer:

0.1469

Step-by-step explanation:

Given from the question;

Mean=8.4 hrs=μ

Standard deviation=1.8 hrs=δ

Sample size, n=40

Let  x=8.7

z=(x-μ)÷(δ÷√n)  

Find z(8.7)

z=(8.7-8.4)÷(1.8÷√40)

z={0.3×√40}÷1.8=1.05409

z=1.0541

Read from the  standard normal probabilities table

P(z>1.0541)

=0.1459

3 0
3 years ago
A Thurstone scale was constructed to measure creativity. The scale scores ranged from 1 to 13. If the scale was properly constru
Sonja [21]

Answer: A person with a score of 6 was more creative than a person with a score of 5

Step-by-step explanation: The Thurstone scale is usually employed in the representation of non-numerical attributes such as creativity, like or dislike, understanding and so on. in a numerical format usually in questionnaires or surveys in other to denote the level of agreement or disagreement with the statement or create ranking. However, despite being represented in numerical format to create distinction and processing. Variables measured cannot be subjected to mathematical calculation.

In the scenario above, creativity is represented in numerical format to show the level of creativity such that individuals with higher numbers are deemed more creative than those with lesser figures. However, it is wrong to Infer that an individual with creativity score of 6 is twice as creative as those with a creativity of 3.

IT just shows that individuals with 6 are more creativity than those with 5 and so on.

7 0
3 years ago
A gardener is planting flowers. He plants 30 flowers in each garden bed. He plants 9 garden beds. How many flowers does the gard
yuradex [85]
The gardener planted 270 flowers
4 0
3 years ago
Read 2 more answers
Write an algebraic expression for the following word phase: the quotient of r and 12
blondinia [14]

The quotient of r and 12

r:12=r\div12

The quotient of r and 12 as a fraction

\dfrac{r}{12}

3 0
3 years ago
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