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3 years ago

Which equation has no solution?

1 answer:

6 0

C. -5 + 9 = 22 + 9 - 7 is the answer.

This is because when solved it’s : -52 = 15 which is false therefore there’s no solution.

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What is x/2 + 8 < 10. x < _____

notsponge [240]

Answer:

X<4

Step-by-step explanation:

X/2<2 by subtracting 8 from both sides

Then you need to multiple by 2 and get

X<4

5 0

3 years ago

Find the area of triangle abc if a=34 ft c=42ft b=55

Gekata [30.6K]

Answer:

34+42+55=141

Step-by-step explanation:

3 0

4 years ago

What is 82.5 as a fraction in simplest form

tangare [24]

85.5 as a fraction is 85 2/10 which is simplified to 85 1/5

3 0

4 years ago

Read 2 more answers

Suppose that time spent on hold per call with customer service at a large telecom company is normally distributed with a mean µ

lana66690 [7]

Answer:

0.3108 is the probability that the sample mean is between 7.8 and 8.2 minutes.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8 minutes

Standard Deviation, σ = 2.5 minutes

Sample size, n = 25

We are given that the distribution of time spent is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{2.5}{\sqrt{25}} = 0.5$

P(sample mean is between 7.8 and 8.2 minutes)

$P(7.8 \leq x \leq 8.2)\\\\ = P(\displaystyle\frac{7.8 - 8}{0.5} \leq z \leq \displaystyle\frac{8.2-8}{0.5})\\\\ = P(-0.4 \leq z \leq 0.4})\\\\= P(z < 0.4) - P(z < -0.4)\\\\= 0.6554 -0.3446= 0.3108$

0.3108 is the probability that the sample mean is between 7.8 and 8.2 minutes.

4 0

4 years ago

Multiply. 6 1/4 x 3 3/5 =

Shalnov [3]

45/2 or 22 1/2
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6 0

3 years ago