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3 years ago

Absolute value of 2i

Mathematics

1 answer:

andriy [413]3 years ago

6 0

Answer: the absolute value of 2i is 2

Step-by-step explanation:

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you and a friend are running on treadmills you run 0.5 miles every 3 minutes and your friend runs 2 miles every 14 minutes. you

ivolga24 [154]

A) 1 mile every 6 minutes

B) 1 mile every 7 minutes

-------------------------------------------------------------------------------

42 minutes total is when they will catch up to each other.

A) will have run 7 miles in 42 minutes

B) will have run 6 miles in 42 minutes

5 0

3 years ago

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Mr. Scrubs got some money for his birthday he spent 1/5 of it on dog treats then he divided the remainder equally among his 3 fa

MAXImum [283]

1/5 spent on dog treats
4/5 left

4/5 divided into 3 parts means 60 for each charity
1/3 of 4/5=4/15
4/15 of total=60 for each charity
times bot sides by 15/4
total=900/4
total=225

he recieved $225 for his birthday

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3 years ago

Data for a particular subdivision near downtown Houston indicate that the average price per square foot for a home is $100 with

spayn [35]

Answer:

$P(X>110)=P(\frac{X-\mu}{\sigma}>\frac{110-\mu}{\sigma})=P(Z>\frac{110-100}{5})=P(z>2)$

And we can find this probability with the complement rule and we got:

$P(Z>2) = 1-P(Z$

And using the normal standard table or excel we got:

$P(Z>2) = 1-P(Z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the prices of a population, and for this case we know the distribution for X is given by:

$X \sim N(100,5)$

Where $\mu=100$ and $\sigma=5$

We are interested on this probability

$P(X>110)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X>110)=P(\frac{X-\mu}{\sigma}>\frac{110-\mu}{\sigma})=P(Z>\frac{110-100}{5})=P(z>2)$

And we can find this probability with the complement rule and we got:

$P(Z>2) = 1-P(Z$

And using the normal standard table or excel we got:

$P(Z>2) = 1-P(Z$

And we can find this probability on this way:

$P(-0.50$

6 0

3 years ago

What is the volume of the entire figure? A three-dimensional figure with sides labeled with values ft3

lions [1.4K]

The volume of each rectangular prism is the product of its dimensions. The total volume is the sum of the volumes of the two rectangular prisms.
(4 ft)·(6 ft)·(3 ft) + (9 ft)·(2 ft)·(16 ft) = 72 ft³ + 288 ft³ = 360 ft³

6 0

3 years ago

jamal is having a party at a science museum, including himself, he can spend no more than $175. admission is $12.50 per ticket a

abruzzese [7]

Answer:

Step-by-step explanation:

If u add 12.50 and 6.50 together u get 19 and if u multiply 19 up to 175$, Then u only get to bring 9 people and if u multiply 19 x 9 u get 171 if u multiply it more u will go over the budget so 9 is the correct answer.

8 0

3 years ago

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