2 years ago

An experiment involves flipping a coin three times.

Mathematics

1 answer:

Xelga [282]2 years ago

3 0

Answer:

19/50

Step-by-step explanation:

If you put this in decimal form, it's 0.38.

All you have to do is convert the decimal to a reduced fraction, which is 19 over 50 (19/15).

Hope this helps you!

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4 years ago

This diagram can be used to prove the Pythagorean theorem.

KatRina [158]

Answer:

D) See that the red and purple triangles can be subtracted from both pictures

Step-by-step explanation:

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3 years ago

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In the following triangle what is the length of the hypotenuse?

Daniel [21]

Answer:

Hypotenuse: 6

Step-by-step explanation:

Sin45°=(BC/AC)

Sin45°=(3√2/AC

1/√2=3√2/AC

AC=3×2=6

so hypotenuse = 6

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3 years ago

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A fish tank at an aquarium has a volume of 1,568 cubic feet and a depth of 8 feet. If the base of the tank is square, what is

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So, if x is length, then x*x*8 is 1568. To solve, you do 1568/8, which gives you 196. The square root of 196 is 14, and 14*14*8 is 1568.

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3 years ago

On a recent quiz, the class mean was 72 with a standard deviation of 4.2. Calculate the z-score (to 2 decimal places) for a pers

barxatty [35]

Answer:

The Z score of the person is -3.09.

Step-by-step explanation:

The standard normal deviate (Z) for a normal distribution is given by

$Z=\frac{X-\bar{X}}{\sigma }$

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X = the value of observation

$\bar{X}$ is mean of the observations and

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Applying values we get

$Z=\frac{59-72}{4.2}=-3.09$

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4 years ago