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posledela
2 years ago
9

Tiara earned 12 dollars on her

Mathematics
1 answer:
Fantom [35]2 years ago
7 0

Answer:

C

Step-by-step explanation:

12 + 3x

12 + 3(20)

12 + 60

72

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In a study, researchers wanted to measure the effect of alcohol in the development of the hippocampal region in adolescents. The
lbvjy [14]

Answer:

Kindly check explanation

Step-by-step explanation:

Given :

Sample size, n = 30

Tcritical value = 2.045

Null hypothesis :

H0: μ = 9.08

Alternative hypothesis :

H1: μ≠ 9.08

Sample mean, m = 8.25

Samole standard deviation, s = 1.67

Test statistic : (m - μ) ÷ s/sqrt(n)

Test statistic : (8.25 - 9.08) ÷ 1.67/sqrt(30)

Test statistic : - 0.83 ÷ 0.3048988

Test statistic : - 2.722

Tstatistic = - 2.722

Decision region :

Reject Null ; if

Tstatistic < Tcritical

Tcritical : - 2.045

-2.722 < - 2.045 ; We reject the Null

Using the α - level (confidence interval) 0.05

The Pvalue for the data from Tstatistic calculator:

df = n - 1 =. 30 - 1 = 29

Pvalue = 0.0108

Reject H0 if :

Pvalue < α

0.0108 < 0.05 ; Hence, we reject the Null

4 0
2 years ago
Find the product.<br><br> 1/2 - y (2y * 3 - 8)<br> a) -y 4 + 4y<br> b) y 4 + 4y<br> c) -2y 3 + 4
aivan3 [116]
1/2 - y (6y - 8)
1/2 -6y2 - 8y

the answer is A
5 0
3 years ago
Josh paid for four books with 3 20$ bills He received 16 $ in change Each book cost the same amount how much did each book cost
azamat

Answer:

each book cost $11

8 0
2 years ago
Read 2 more answers
Jimmy spent 33 on Amazon. This was 4 more than of the amount of money Shane spent. Which equation best represents the amount of
mezya [45]

Answer:

33/4=8.25

So the best way to do it is 33 divided by 4. That equals 8.25.

5 0
1 year ago
Please help i need the answer ASAP
ivann1987 [24]

Answer:

I believe what you would have to do is add each number so the top left box would be two and the bottom right would be 11

Step-by-step explanation:

8 0
2 years ago
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