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3 years ago

HELPPPPP PLEASEEEE!!!!

Mathematics

1 answer:

Sidana [21]3 years ago

3 0

Answer:

pretty sure x is 60 because 60+25 is 80 and its the same as N so 80

Step-by-step explanation:

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What is the additive inverse of 5/11

jok3333 [9.3K]

HERE IS UR ANSWER:-

-5/11

HOPE IT HELPED U BRO! ✌✌

5 0

3 years ago

Evaluate of the expression when b = -2 and c = 3 ?

xeze [42]

9(-2) + 8(3) + 1 - 6(-2) - 5(3) - 6

-18 + 24 + 1 + 12 - 15 - 6

= -2

7 0

3 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

3 years ago

cook books have recipes that are designed for 4 people. if a particular recipe in a cook book calls for 3 eggs, how many eggs wo

kolezko [41]

Answer:

10.5

Step-by-step explanation:

If the recipe is designed for 4 people than you would need 6 eggs for 8 people (8 is twice as many as 4 so you need twice as many eggs.) similarly, 14 is 3.5 times as many as 4 (14/4=3.5) so you would need 3x3.5=10.5 eggs.

Not sure how that works but I hope this helped!

4 0

4 years ago

Jean made 5 gallons of lemonade for a picnic. If Jean plans to save 1/2 gallon for her ride home, how many 8-fluid-ounce glasses

valkas [14]

Answer: 72 8-fluid-ounce glasses

Step-by-step explanation:

5G - 1/2 = 4.5G

8 fluid oz = 1 cup

16 cups = 1G

4.5G x 16c= 72 cups

4 0

3 years ago