All categories

3 years ago

A. 15 B. 10 C. 3/8 D. 1/8

Mathematics

1 answer:

Anna71 [15]3 years ago

8 0

Answer:

Step-by-step explanation:

the theoretical probability is a fancy term for an even amount of both, which would be 20 flips landing on H, and 20 landing on T. Since the question is asking what's the difference between the theoretical probability and the experimental results, you'd take 20(theoretical number of flips that land on H) and subtract 15 (experiment results for the amount of flips that land on H), and 20 - 15 = 5. Now that you know the difference is 5, you would divide 5 by 40 to find the answer. 5/40 = 1/8 when you simplify, making the answer D.

You might be interested in

How many are 13 x 13 ?

djyliett [7]

Answer:

169

Step-by-step explanation:

13*13=169

We can split the two 13's up:

(10+3)(10+3)

Multiply 10 with 10, 10 with 3, 3 with 10, and 3 with 3.

Basically, just multiply every single term together.

100+30+30+9

100+69

169

Hope this helps!

8 0

3 years ago

Read 2 more answers

Adding two negative numbers together always results in a negative number." Is this statement True or False?

Licemer1 [7]

Answer:

true because when you add negatives it's the same as subtracting, so, you're just going further negative

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E%7B2%7D%20%2B4x%2B4" id="TexFormula1" title="\sqrt{x^{2} +4x+4" alt="\sqrt{x^{2}

Anna35 [415]

Answer:

Given,

$\sqrt{ {x}^{2} + 4x + 4} - 3 = 0 \\ = > \sqrt{ {x}^{2} + 4x + 4} = 3 \\ = > {( \sqrt{ {x}^{2} + 4x + 4} })^{2} = {3}^{2} \\ = > {x}^{2} + 4x + 4 = 9 \\ = > {x}^{2} + 4x + 4 - 9 = 0 \\ = > {x}^{2} + 4x - 5 = 0 \\ = > {x}^{2} + 5x - x - 5 = 0 \\ = > x(x + 5) - 1(x + 5) = 0 \\ = > (x - 1)(x + 5) = 0 \\ \\ \sf \: either \: x - 1 = 0 \: \: \: \: \\ = > x = 1 \: \: \\ \\ \sf \: or \\ x + 5 = 0 \\ = > x = - 5 \\ \\ \green{ \boxed{ \bf \: \: \: \: \: x = 1 \: \: or \: - 5}}$

But if we put the value of x = 5 then it doesn’t satisfy the equation.

So,

X = 1

5 0

3 years ago

Read 2 more answers

The high temperature in New York City was 10°F and the low temperature was 12.2°F lower than this. Yesterday’s low temperature w

Ratling [72]

Answer:

Step-by-step explanation:

3 0

3 years ago

What fraction is equal to the length of the red segment?

Burka [1]

Answer:

The red segment is from 1/4 to 3/4.

Step-by-step explanation :

Answer:

The red segment is from 1/4 to 3/4.

3/4 - 1/4 = 2/4

2/4 = 1/2

1/2

This answer can also be found by seeing there are four equal boxes making up the one larger box, since two out of the four boxes are filled then the fraction would be 2/4, which simplifies to 1/2

3 0

3 years ago