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Rainbow [258]
2 years ago
8

Please help me with this.

Mathematics
1 answer:
creativ13 [48]2 years ago
7 0

Answer:

-4qr that's the answer I hope is help you

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Perpendicular lines are lines that cross at a 90 degree angle

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3 years ago
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slamgirl [31]

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first one is 5.8

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2 years ago
A supervisor records the repair cost for 14 randomly selected refrigerators. A sample mean of $79.20 and standard deviation of $
Nitella [24]

Answer:

( $74.623, $83.777)

The 90% confidence interval is = ( $74.623, $83.777)

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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.

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Critical value at 90% confidence z = 1.645

Substituting the values we have;

$79.20+/-1.645($10.42/√14)

$79.20+/-1.645($2.782189528308)

$79.20+/-$4.576701774067

$79.20+/-$4.577

( $74.623, $83.777)

The 90% confidence interval is = ( $74.623, $83.777)

5 0
3 years ago
Question number 16 pls answer ​
lozanna [386]
3x - 6 = 4x + 1
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Step-by-step explanation:

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