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2 years ago

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• What is the pobability of getting exactly 500 heads out of 1000 coin flips? Approximate it to within 5% of the true value with

out a calculator.

1 answer:

oksian1 [2.3K]2 years ago

3 0

Answer:Probability of getting exactly 500 heads=0.025

Step-by-step explanation:Probability of getting exactly 500 heads= 1000C500(0.5)^1000=0.025

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zimovet [89]

Answer:
First choice is the correct one

Explanation:
The given is:
[(x+5) / (x+2)] - [(x+1) / x(x+2)]
First, we will need to have a common denominator and then we will solve the subtraction normally. To get a common denominator, we will have to multiply both numerator and denominator of first term by x.

Therefore:
[(x+5) / (x+2)] - [(x+1) / x(x+2)] = [x(x+5) / x(x+2)] - [(x+1) / x(x+2)]
= [x(x+5)-(x+1)] / [x(x+2)]
= (x^2 + 5x - x - 1) / [x(x+2)]
= [(x^2 + 4x - 1)] / [x(x+2)]

Hope this helps :)

3 0

2 years ago

4 + 6x + 5 = 7x Could someone help me? Thanks :) And could you also show how u did it

matrenka [14]

Answer:

x=9

Step-by-step explanation:

combine like terms

$4+6x+5=7x$

4+5=9

9+6x=7x

to get 6x with 7x subtract 6x from both sides as its positive

6x-6x=0

7x-6x=x

9=x

x=9

4 0

2 years ago

Simplify.<br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B8%5Csqrt%7B6mn%7D%20%2B%206%5Csqrt%7B8mn%7D%20%7D%7B2%5Csqrt%7B2mn%7D%

nata0808 [166]

It’s the first answer
I used Math-way :)

3 0

2 years ago

3x/5 - x = x/5 - 5/2?

laila [671]

X= 4.167 you cross multiply both the equations. so you get 30x - 50x = 10x - 125. you shift all the values of x on side and then divide it by 125 sso you get x= 4.167

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2 years ago

Which expression is equivalent to <img src="https://tex.z-dn.net/?f=%5Csqrt%7B100%7D" id="TexFormula1" title="\sqrt{100}" alt="\

Simora [160]

$\huge\boxed{10}$

$\sqrt{100}$ means that you are looking for the number that, when multiplied by itself, produces $100$ . That number is $10$ , because $10\cdot10=100$ , meaning that $\sqrt{100}=10$ .

7 0

1 year ago

Read 2 more answers