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3 years ago

6

Chapter 18 Review nswer the following problems. Daniel has 7 trophies he has won playing soccer. How many different ways can he

arrar them in a row on his bookshelf?

1 answer:

stellarik [79]3 years ago

4 0

The answer is 5040, all you do is 7x6x5x4x3x2

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Help pls I will give 20 points

dalvyx [7]

Answer:

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3 years ago

Sophie and Marcos are each saving for new bicycles. So far, Sophie has $6 saved and can earn $5 per hour walking dogs. Marcos ha

SpyIntel [72]

6+5=11+5=16+5=21
3+6=9+6=15+6=21
It will take Marco and Sophie 3 hours to get the same amount of money. The amount of money they will have will be $21.

8 0

3 years ago

75 POINTS ASAP HELP

katrin2010 [14]

Answer:

It is called the constant ratio.

3 0

3 years ago

Read 2 more answers

The amount of time Ricardo spends brushing his teeth follows a Normal distribution with unknown mean and standard deviation. Ric

Papessa [141]

Let $X$ denote the number of minutes spent brushing his teeth, and let $\mu$ be the mean and $\sigma$ the standard deviation for this distribution.

$\mathbb P(X$

The z-score corresponding to this probability is approximately $z=-0.2533$ , which means

$\dfrac{1-\mu}\sigma=-0.2533\iff\mu-0.2533\sigma=1$

Next, (note the sign change)

$\mathbb P(X>2)=0.02\implies\mathbb P(X\le2)=\mathbb P\left(\dfrac{X-\mu}\sigma\le\dfrac{2-\mu}\sigma\right)=0.98$

The corresponding z-score is approximately $z=2.0538$ , so you have

$\dfrac{2-\mu}\sigma=2.0538\iff\mu+2.0538\sigma=2$

Solving the two equations for $\mu$ and $\sigma$ , you'll find that the mean is approximately $\mu=1.1098$ and the standard deviation is approximately $\sigma=0.4334$ .

7 0

3 years ago

There are three blue marvels and five red marvels in a bag you randomly select a marble and put it it back in the back if you do

olga nikolaevna [1]

Answer:

25 times

Explanation:

Blue Marvels: 3

Red Marvels: 5

Total Marvels: 5 + 3 = 8 marvels

Probability: favorable outcomes/total outcomes

Probability - red marble = 5/8

After Doing 40 times:

= 5/8 × 40

= 25

7 0

2 years ago