3 years ago

How to solve this equation?

Mathematics

1 answer:

Korolek [52]3 years ago

6 0

X= -4 that is the answer to x

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A project has each of the following characteristics except ____.

Brut [27]

Answer:

C. Low risk with a high profit potential or benefits.

Step-by-step explanation:

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A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit

sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = $50.50

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation = 20

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447$

$=50.50 \pm 2.1447(\dfrac{20}{\sqrt{15}} ) \\\\= 50.50 \pm 11.0751 \\= (39.4249,61.5751)\\\approx (39.43, 61.58)$

95% Confidence interval: (39.43, 61.58)

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3 years ago

To encourage bob to work his math problems correctly, his dad said he'd pay him 10 cents for each correct answer and charge him

tatuchka [14]

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3 years ago

Help me please I need help

balandron [24]

Answer:

I have solved the question in the picture in two different ways : simplification and factorisation I hope you find it useful bye:)

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