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alexandr402 [8]
3 years ago
12

Just say something so that you can have my points :)

Mathematics
1 answer:
Monica [59]3 years ago
6 0

Answer:

thanks !!

Step-by-step explanation: have a wonderful day :)

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Rewrite in simplest terms: -(2c + 8) + 8c
garik1379 [7]

Answer:

6c-8

Step-by-step explanation:

We have:

-(2c+8)+8c=

-2c-8+8c=\\

6c - 8

6 0
3 years ago
6. A car dealership would like to estimate the mean mpg of its new model car with 90% confidence. The population is normally dis
Yakvenalex [24]

Answer:

92.9997<\mu<99.5203

Step-by-step explanation:

Using the formula for calculating the confidence interval expressed as:

CI = xbar ± Z * S/√n where;

xbar is the sample mean

Z is the z-score at 90% confidence interval

S is the sample standard deviation

n is the sample size

Given parameters

xbar = 96.52

Z at 90% CI = 1.645

S = 10.70.

n = 25

Required

90% confidence interval for the population mean using the sample data.

Substituting the given parameters into the formula, we will have;

CI = 96.52 ± (1.645 * 10.70/√25)

CI = 96.52 ± (1.645 * 10.70/5)

CI = 96.52 ± (1.645 * 2.14)

CI = 96.52 ± (3.5203)

CI = (96.52-3.5203, 96.52+3.5203)

CI = (92.9997, 99.5203)

<em>Hence a 90% confidence interval for the population mean using this sample data is 92.9997<</em>\mu<em><99.5203</em>

4 0
3 years ago
Write 7,380,000,000 in scientific notation.
uysha [10]
7.380 times 10 to the 9th power (or 7.38 times 10 to the 9th power)
5 0
3 years ago
Read 2 more answers
Find the volume of a
Serggg [28]

Answer:

v = 189 ft³

Step-by-step explanation:

v = lwh

v = 3 * 7 * 9

v = 189 ft³

8 0
3 years ago
What expression is equivalent to cos(1.4x)-cos(.6x)
andreev551 [17]
The answer should be:
cos (0.8 x)

BRAINLIEST PLS!!!
6 0
3 years ago
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