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4 years ago

What is the percent for3/15

Mathematics

1 answer:

saul85 [17]4 years ago

3 0

Answer:

20%

Step-by-step explanation:

You could do it without reduction

(3/15) * 100 = 3*100/15 = 300/15 = 20 = 20%

Or you could do it by reduction

3/15 = (3÷3) / (15 ÷3) * 100 = (1/5)*100 = 20%

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Suppose that lithium calculator battery with a charge of 3 volts, actually has a voltage with uniform distribution between 2.93

Dmitrij [34]

Answer:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean of the uniform probability distribution is:

$M = \frac{a + b}{2}$

The standard deviation of the uniform distribution is:

$S = \sqrt{\frac{(b-a)^{2}}{12}}$

The probability that we find a value X lower than x is given by the following formula.

$P(X \leq x) = \frac{x - a}{b-a}$

Uniform distribution between 2.93 and 3.1 volts

This means that $a = 2.93, b = 3.1$ . So

Mean:

$M = \frac{2.93 + 3.1}{2} = 3.015$

Standard deviation:

$S = \sqrt{\frac{(3.1 - 2.93)^{2}}{12}} = 0.049$

What is the probability that a battery has a voltage less than 2.98?

$P(X \leq 2.98) = \frac{2.98 - 2.93}{3.1 - 2.93} = 0.2941$

So the correct answer is:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

6 0

3 years ago

Copy and write the missing factor https://ibb.co/gAKUJA

alexira [117]

I think that the answer would be 5/5

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3 years ago

What is the area of the triangle in square yards? 6 yd. 15 3/4 yd. hurry plss

Lera25 [3.4K]

Answer:

im guessing 6 is your base and your height is 15 3/4.

Formula of a triangle we must remember:

BH x 1/2 (basically dividing by 2)

94.5 (fraction form will be: 94 1/2)

94.5 divided by 2 = 47.25 <---------- decimal form

94 1/2 divided by 2 = 47 1/4 <------- fraction form

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3 years ago

One of the events at the circus starred Gabriella the Human Cannonball. On Saturday she performed in four shows. Shot from a can

MAXImum [283]

My guess is 59.49 meters, you add all 4 of the distances together to get the total from that one day. Hope this helps :)

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3 years ago

Miguel tells his teacher that One-fifth is the same as 20%. Which best justifies Miguel’s answer?

Levart [38]

Answer:

5 goes into 100 twenty times, so 20% is the answer

hope it helps! :)

Step-by-step explanation:

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4 years ago