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marin [14]
3 years ago
14

7 - 3x = -1 pls help

Mathematics
1 answer:
Assoli18 [71]3 years ago
7 0

Answer:

Step-by-step explanation:

7 - 3x = -1

-7          -7

-3x=-8

----  -----

-3     -3

x= -8/-3

       <u>    </u>

x= 2.66

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In a random sample of 7 residents of the state of California, the mean waste recycled per person per day was 1.5 pounds with a s
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Answer:

CI(99%) = ( 0.93 , 2.07)

Therefore at 99% confidence interval (a,b) = ( 0.93 , 2.07)

Critical value z(at 99% confidence) = z(0.005) = 2.58

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean gain x = 1.5

Standard deviation r = 0.58

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Confidence interval = 99%

Critical value z(at 99% confidence) = z((1-0.99)/2)

z(0.005) = 2.58

Substituting the values we have;

1.5+/-2.58(0.58/√7)

1.5+/-2.58(0.2192)

1.5+/-0.565536

1.5+/-0.57

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Therefore at 99% confidence interval (a,b) = ( 0.93 , 2.07)

7 0
3 years ago
A sculpture is in the shape of a cylinder. The sculpture has a diameter of 10 feet and a height of 21 feet. Which measurement is
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2 years ago
Question Solve: x - 18 = –103. Provide your answer belo ​
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Step-by-step explanation:

x-18=-103

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6 0
3 years ago
Read 2 more answers
6. Pamel bought an electric drill at 85% of the regular price. She paid $276,25 for
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Answer:

£325

Step-by-step explanation:

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Please help me please please : ( : (
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Answer:

They will be picked up at 2 \frac{1}{4} yards above sea level

Step-by-step explanation:

Let us consider sea level as reference and positions above sea level as positive and below sea level as negative.

With respect to this reference,

the position of top most point is +17 \frac{3}{4} yards

and the position of lower most point is -13 \frac{1}{4} yards

⇒ The position of midpoint is \frac{+17 \frac{3}{4} - 13 \frac{1}{4}}{2}

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