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ddd [48]
3 years ago
11

Match the meaning of each of the following expressions help

Mathematics
2 answers:
nexus9112 [7]3 years ago
7 0
I hope this helps...<span>
</span>

Dmitriy789 [7]3 years ago
4 0
9.
3.
1.
4.
2.
7.
5.
6.
8.
10.
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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
8090 [49]

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

5 0
3 years ago
Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks. Quincy and his mo
Vikentia [17]

Step-by-step explanation:

rc = planted rows of carrots

rt = planted rows of tomatoes

h = number of hours

rc = 4h + 1 (starting with 1 already finished row there will be 4 additional rows every hour)

rt = 3h + 8 (staying with 8 already finished rows there will be 3 additional rows every hour).

when will they have planned the same number of rows ?

when rc = rt, of course.

so,

4h + 1 = 3h + 8

h = 7

4×7 + 1 = 28 + 1 = 29 rows

after 7 hours Quincy and his mom will each have planted 29 rows of vegetables.

8 0
2 years ago
In Kaylee's history class, 1/2 of the students are making videos for their final project and 1/12 are making dioramas. What frac
USPshnik [31]

Answer:

7/12

Step-by-step explanation:

7 0
3 years ago
WILL gIVE bRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
sveta [45]

Answer: I don’t like this it’s scaring me but can you give me a bit more info then I think I can get this

Step-by-step explanation:

7 0
3 years ago
Its a TEST pls help !!!! i beg
ad-work [718]

Answer:

Step-by-step explanation:

-8 + 5 = -3

10 + - 4 = 6

3 0
3 years ago
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