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3 years ago

How does place value help me subtract decimals?

1 answer:

8 0

Place Value helps you subtract decimals because without it it would be a mess. Everything has to be in order if not you get the wrong answer

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Solve the equation -4x=-40 x=

svet-max [94.6K]

x=10

Step-by-step explanation:

10 times -4 is -40 since if you multiply a negative number by a positive you get a negative

6 0

4 years ago

Read 2 more answers

A 1.80 x 5= 2.16 b 1.80 ÷ 5= 2.16 c 1.80 ÷ 2= 0.90 d 1.80 ÷ 5= 0.36

IRISSAK [1]

Answer:

heidnejfrbfj

Step-by-step explanation:

heudbdbeb

4 0

4 years ago

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

ASAP- what is the slope and line below? ( UPDATE ) The answer is A.

kozerog [31]

Answer:

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

Where m is the slope and (a, b) a point on the line

y - 4 = - 5(x + 3 ) ← is in point- slope form

with m = - 5 and (a, b) = (- 3, 4 ) → C

6 0

3 years ago

In the scenario:

xenn [34]

Answer:

Combination

Step-by-step explanation:

6 0

3 years ago