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Mice21 [21]
3 years ago
15

What number should be placed in the box to help complete the division calculation? (1 point) Long division setup showing an inco

mplete calculation. 13 is in the divisor, 4231 is in the dividend, and 3 hundreds and 2 tens is written in the quotient. 3900 is subtracted from 4231 to give 331. An unknown value represented by a box is being subtracted from 331.
Mathematics
1 answer:
Gnoma [55]3 years ago
4 0

Answer:

The answer is 299

Step-by-step explanation:

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A past study claims that adults in America spend an average of 17 hours a week on leisure activities. A researcher wanted to tes
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Answer:

The claim is false.

Step-by-step explanation:

Given the data :

13 24 21 37 15 25 18 22 40 32

The sample mean and standard deviation can ben calculated for the given sample.

Using calculator :

Sample mean, xbar = 24.7

Sample standard deviation, s = 9.04

Sample size, n = 10

The hypothesis :

H0 : μ = 17

H1 : μ ≠ 17

The test statistic :

(xbar - μ) ÷ (s/√(n))

(24.7 - 17) ÷ (9.04/√(10))

7.7 / 2.8586990

Test statistic = 2.694

We can obtain the Pvalue, at α = 0.05 ; df = n-1 = 9

Pvalue = 0.0246

Since Pvalue < α ; we reject the null ; Hence, there is significant evidence to conclude that an adult American does not spend average of 17 hours in leisure

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3 years ago
Jason has applied for two summer jobs, one as a lifeguard and the other as a camp counselor. The lifeguard job is three days a w
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Answer:

Lifegard

Step-by-step explanation:

3 0
3 years ago
Could 1.5, 2.5, 3.5 and 6, 10, 12 be the corresponding sides of two similar triangles
boyakko [2]

Answer:

No

Step-by-step explanation:

If the ratios of the corresponding sides are equal then they would be the sides of 2 similar triangles.

Calculate the ratio of corresponding sides.

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\frac{10}{2.5} = 4

\frac{12}{3.5} ≠ 4

Thus the sides are not the corresponding sides of similar triangles.

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Write the fraction in simplest form of 6/20.
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\dfrac{6}{20}=\dfrac{6:2}{20:2}=\dfrac{3}{10}
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