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3 years ago

ILL GIVE BRAINLIEST AND CRAZY POINTS JUST HELP!!!

Mathematics

1 answer:

kvasek [131]3 years ago

7 0

Charter Bus:

350 ( distance) / 50 ( rate) = 7 (time in hours).

Conclusion - Will take the charter bus 7 hours to drive from Norfolk to New York.

12 - 6 = 6 A.M ( counting for time left in this half of the day)

7 - 6 = 1 hour left ( which will be then 1 P.M )

Conclusion- Will arrive in New York City at 1 P.M.

Personal Vehicle:

1 hour : 70 miles, 2 hours : 140 miles, 3 hours : 210 miles, 4 hours : 280 miles, 5 hours : 350 miles.

Conclusion: It will take 5 hours to get to New York City from Norfolk.

12 A.M - 7:30 A.M = 4:30 A.M

5 - 4.5 = 0.5 hours left ( which will be then 12:30 P.M )

Conclusion- Will arrive in New York City at 12:30 P.M.

Meet Up:

5. By looking at the rates/ratios of both vehicles and finding out the time it would take with both vehciles also I figured out that Dakota's parents will arrive first.

I didn't include a graph, I thought that you could do that with the rates of both vehicles.

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Solve and graph and plot this on the line

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X less than or equal to (< with the line underneath) -3 or x>0

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3 years ago

Right triangle ABC is shown.

Blababa [14]

Answer:

i think that is same dude like cos

Step-by-step explanation:

you can simply use a net okay dude

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2 years ago

Read 2 more answers

I need some help on this, I do NOT get it lol

andrew11 [14]

Answer:

Logarithmic

Step-by-step explanation:

It's literally a logarithmic function because it includes "log" which is short for logarithmic.

3 0

3 years ago

A random sample of 747 obituaries published recently in Salt Lake City newspapers revealed that 344 (or 46%) of the decedents di

cupoosta [38]

Answer:

The probability value is almost equal to 0. Implying that the proportion of people dying in that particular interval if deaths occurred randomly throughout the year is unusual.

Step-by-step explanation:

The random variable X can be defined as the number of decedents who died in the three-month period following their birthdays.

A random sample of 747 obituaries published recently in Salt Lake City newspapers revealed that 344 (or 46%) of the decedents died in the three-month period following their birthdays (123).

The probability (p) of anyone dying in any quarter if people die randomly during the year is simply 0.25.

The random variable X follows a Binomial distribution with parameters n = 747 and p = 0.25.

But the sample selected is too large and the probability of success is small.

So a Normal approximation to binomial can be applied to approximate the distribution of p if the following conditions are satisfied:

np ≥ 10
n(1 - p) ≥ 10

Check the conditions as follows:

$np=747\times 0.25=186.75>10\\n(1-p)=747\times (1-0.46)=560.25>10$

Thus, a Normal approximation to binomial can be applied.

So, $p\sim N(\hat p,\ \frac{\hat p(1-\hat p)}{n})$ .

Compute the probability that 46% or more would die in that particular interval if deaths occurred randomly throughout the year as follows:

$P (p\geq 0.46)=P(\frac{p-\hat p}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}>\frac{0.46-0.25}{\sqrt{\frac{0.25(1-0.25)}{747}}})$

$=P(Z>13.25)\\=1-P(Z$

*Use a z table for the probability.

The probability value is almost equal to 0. This probability is very low indicating that the proportion of people dying in that particular interval if deaths occurred randomly throughout the year is unusual.

3 0

2 years ago

Plz look at pic !!!! Plz Help!!! Use proportion to solve

soldi70 [24.7K]

Answer:

It takes 26 2/3 gallons to make a 400 mile trip.

Step-by-step explanation:

This question is simply asking for the number of miles per gallon . In math, per means this is meant to be written as a fraction.

"If a trip of 270 miles required 18 gallons of gas" is actually saying "270 miles per 18 gallons." This can be written as a fraction like so: 270/18.

If we're looking for the amount of gas used for a 400 mile trip, we have the fraction: 400/g, g being the amount of gallons it took to make that trip.

Now we can set up the proportion: $\frac{270}{18} =\frac{400}{g}$

Cross multiply and solve accordingly.

$\frac{270}{18} =\frac{400}{g}$

400 $270g = 400 *18\\ 270g = 7200\\g=26\frac{2}{3}$ /g

So the answer is:

It takes 26 2/3 gallons to make a 400 mile trip.

6 0

3 years ago