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2 years ago

The probability of flipping 3 heads on 2 fair

Mathematics

2 answers:

Zigmanuir [339]2 years ago

4 0

Answer:

I'm going to assume you mean 3 fair coins. The probably would be 1/8, so unlikely.

Step-by-step explanation:

UNO [17]2 years ago

3 0

Answer:

impossible? you have only 2 coins

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HACTEHA [7]

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3 years ago

Find the slope of the line.

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3 years ago

Adam dropped a rubber ball from a window 40 ft above the sidewalk the ball always bounces half of the height that it drops how f

sergij07 [2.7K]

Answer:

The ball will reach a height of 5 ft by the 4th time.

Step-by-step explanation:

The initial height of the ball is 40 ft, when it bounces from the floor once the height will be 20 ft, the second time it'll be 10 ft, and so on. The sequence that can represent the maximum height of the ball after each bounce is:

{40, 20, 10,...}

This kind of sequence is called a geometric progression, in this kind of progression the next number is related to the one before it by the product of a constant called ratio, in this case 1/2. To calculate a specific position in this sequence we only need the ratio and the first number, using the formula below:

a_n = a*r^(n-1)

Where n is the position we want to know, a is the first number and r is the ratio. In this case we have:

a_4 = 40*(1/2)^(4-1) = 40*(1/2)^3 = 40/8 = 5

The ball will reach a height of 5 ft by the 4th time.

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4 years ago

Will give brainliest to correct answer.

Inga [223]

Use Pythagorean's Theorem to find the length of x. $30^2-16^2=x^2$ so $900-256=x^2$ and $x= \sqrt{644}$ . We can simplify that radicand down into a perfect square times a prime number, and that is $\sqrt{4*161}$ . 4 is a perfect square that can be pulled out as a 2, so the length of x is $2 \sqrt{161}$ , the choice on the top right.

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3 years ago

Read 2 more answers

Which list is in order from least to greatest? A) 9.4 * 10^-8, 9.25 * 10^-6, 2.5 * 10^3, 7* 10^3 B) 2.5 *10^3, 7 * 10^3, 9.25 *

vladimir1956 [14]

ANSWER

A) 9.4 * 10^-8, 9.25 * 10^-6, 2.5 * 10^3, 7* 10^3

EXPLANATION

The numbers are given in standard form.

The first criteria we will use to order them is the exponents.

The bigger the exponents the bigger the number.

The second criteria is that, if the exponents of any two numbers are the same, then we use the numbers multiplying the powers of 10 to order.