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Vinvika [58]
2 years ago
9

What is the speed of a dolphin that travels 200 miles in 8 hours

Mathematics
1 answer:
lilavasa [31]2 years ago
8 0

Answer: 25 miles per hour

Step-by-step explanation:

Since the dolphin travels at a rate of 200 miles per hour, in order to find the speed of the dolphin for only one hour, you must divide 200/8. Which gives your 25 mph.

Hope this helps!

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Combine, and simplify the following radical expressions:<br><br> √7-5/√7+√8
solmaris [256]

\frac{\sqrt{7}-5}{\sqrt{7}+\sqrt{8}}

Rationalize.

-7+2\sqrt{14}+5\sqrt{7}-10\sqrt{2}

This can be further simplified to the decimal:

-0.43006...

I hope this helps :)

7 0
3 years ago
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Find the surface area of this cuboid
makkiz [27]

Answer: 76

Step-by-step explanation:

8 0
3 years ago
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The final margin of an NFL football game is approximately normally distributed, with a mean equal to the gambling point spread a
nika2105 [10]

Answer:

The Giants had 0.1949 = 19.49% probability of winning initially.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Mean equal to the gambling point spread and a standard deviation of 14 points. The Patriots had been favored by 12 points.

This means that \mu = 12, \sigma = 14

What does that fact imply about the Giants' initial (i.e., pre-game) chances of winning

P(X > 0): Probability of Patriots winning.

P(X < 0): Probability of Giants winning.

So we want to find P(X < 0), which is the pvalue of Z when X = 0. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{0 - 12}{14}

Z = -0.86

Z = -0.86 has a pvalue of 0.1949

The Giants had 0.1949 = 19.49% probability of winning initially.

7 0
3 years ago
Based on information given in table 2, how many males from a randomly selected population of 100,000 males live to the age of 44
Blababa [14]

Answer:

94,533 males live to the age of 44 years.

4 0
3 years ago
Tasha is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 5 m
Dmitry [639]

Answer:

9 m

Step-by-step explanation:

Let x be the original side of the square flower garden

We increase it by 5

The new side length is (x+5)

The area of a square is found by

A = s^2 where s is the side length

A = (x+5)^2

The area is 196

196 = (x+5)^2

Take the square root of each side

sqrt(196) = sqrt((x+5)^2)

14 = x+5

Subtract 5 from each side

14-5 = x+5-5

9 =x

The original side is 9 m

5 0
3 years ago
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