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2 years ago

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At top cruising speed a mako shark can swim 4 km in 1/10 hour a blue whale can swim 5 km in 1/4 hour which animal swims faster a

top cruising speed how much faster show your work

1 answer:

oksian1 [2.3K]2 years ago

6 0

Answer:

fortnite

Step-by-step explanation:

im different

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Consider sampling heights from the population of all female college soccer players in the United States. Assume the mean height

BARSIC [14]

Answer:

B) .35

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem:

$\sigma = 3.5, n = 100$

Then

$s = \frac{\sigma}{\sqrt{n}}$

$s = \frac{3.5}{\sqrt{100}}$

$s = 0.35$

So the correct answer is:

B) .35

7 0

2 years ago

Triangle $ABC$ has altitudes $\overline{AD},$ $\overline{BE},$ and $\overline{CF}.$ If $AD = 12,$ $BE = 14,$ and $CF$ is a posit

Shalnov [3]

Answer:

<u>CF = 7</u>

Step-by-step explanation:

Given: Δ ABC

Altitudes ⇒ AD = 12 , BE = 14 and CF = ?

The area of the triangle = 0.5 AD * BC ⇒ (1)

OR area = 0.5 BE * AC ⇒ (2)

OR area = 0.5 CF * AB ⇒ (3)

By equating (1) and (3)

∴ 0.5 CF * AB = 0.5 AD * BC

∴ $CF = \frac{AD*BC}{AB} =\frac{12BC}{AB}$ ⇒ (4)

By equating (1) and (2)

0.5 BE * AC = 0.5 AD * BC

∴ $\frac{AC}{BC} = \frac{AD}{BE} =\frac{12}{14} =\frac{6}{7}$ (5)

We should know that about the relation between the sides of the triangle:

The sum of two sides will be greater than the third side

So, AB < BC + AC ⇒ divide both sides by BC

∴ $\frac{AB}{BC} < 1+\frac{AC}{BC}$

By substitution from (5) with AC/BC

∴ $\frac{AB}{BC}$

∴ $\frac{AB}{BC}$

∴ $\frac{BC}{AB} > \frac{7}{13}$ ⇒ (6)

By substitution from (6) at (4)

∴ CF > 12 * 7/13

CF > 6.46

But CF is a positive integer

<u>∴ CF = 7</u>

4 0

2 years ago

a man who weighs approximately 140 pounds has two,12 ounce beers and one 1 1/2 oz. shots of liquor in one hour. what is his esti

Alinara [238K]

The <u>correct answer</u> is:

0.08.

Explanation:

To calculate the BAC, we first find the amount of alcohol (in grams) of the drinks. In the US, a standard drink has 14 g of alcohol. The man has 2 beers and 1 shot; this is 3 standard drinks:
3*14 = 42

This has 42 g of alcohol.

Next we convert the weight in pounds to grams. We do this by multiplying by 454:
140*454 = 63560

Next we multiply by the gender constant. For men, this is 0.68:
63560(0.68) = 43220.8

We divide the grams of alcohol by this number:
42/43220.8 = 0.000972

Multiply this by 100:
0.000972(100) = 0.0972

This is the BAC right after drinking. To account for the time that has passed, we multiply the number of hours by 0.015:
1(0.015) = 0.015

We subtract this from our immediate BAC:
0.0972-0.015 = 0.0822 ≈ 0.08

5 0

2 years ago

Read 2 more answers

The number of children in each family on a particular city block is shown in the dot plot: Dot plot with Number of Children Per

Crank

Answer:

Step-by-step explanation:

Hi,

I think the options are missing for this question.

The x-axis shows the number of children per family and y-axis shows the frequency or number of families with respective number of children.

A histogram simply displays the data with bars of different heights. The higher the frequency, the taller the bar of the histogram and vice versa.

Your histogram should look like this.

5 0

2 years ago

Read 2 more answers

In January, 2005 Anthony was preparing to purchase 100 shares of ABC stock. He was studying the literature and found four differ

Serga [27]

Answer:

The chart which is most relevant representation for Anthony's purposes is;

b. A graph has year on the x-axis, from 2001 to 2005, and value (dollars per share) on the y-axis, from 80 to 200 in increments of 40. A curve goes through (0, 170), (2003, 90), (2005, 130)

Step-by-step explanation:

From the question, we have;

The time at which Anthony was preparing to purchase shares = January, 2005

The number of shares Anthony was preparing to purchase = 100 shares

The information he found in the literature = Charts on ABC stock performance

The information required = The current price of shares of ABC stock

Therefore, the chart that is most relevant is a chart that gives the 2005 pricing of ABC stock which is the graph that has a curve that goes through (0, 170), (2003, 90), (2005, 130)

7 0

2 years ago

Read 2 more answers