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mariarad [96]
3 years ago
6

Solve each equation for the unknown variable

Mathematics
1 answer:
Vikentia [17]3 years ago
7 0

Answer:

A. x=10

B. x=-19

C. x=53

D. x=-1/28

Step-by-step explanation:

A.

2x+3=23

2x=20

x=10

B.

-3(x+9)=30

x+9=-10

x=-19

C.

0.75x-12.75=27

0.75x=39.75

x=53

D.

1/2x+6=-8

1/2x= -14

1=-28x

x=-1/28

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Answer:

d. H0 : pˆ = .6, Ha: pˆ > .6

Step-by-step explanation:

Given that a minister claims that more than 60% of the adult population attends a religious service at least once a month.

Here the subject of interest about a proportion of adult population who attends a religious service at least once a month.

The claim is  this proportion is greater than 60% and we want to check  whether this claim is true.

Hence hypotheses would be for proportion only and not mean.

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Correct answer is

d. H0 : pˆ = .6, Ha: pˆ > .6

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<h3>What is an expression?</h3>

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

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Given expression c² = 45 will be solved as below:-

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c = √45

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Answer:

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20(20-x)=300

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