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Kaylis [27]
4 years ago
8

True-False: If you buy a raffle ticket and there is only one prize available, you can double your probability of winning that pr

ize by buying two tickets.
Mathematics
1 answer:
lesya [120]4 years ago
4 0
The answer is true!  You double your chances.

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If a/\2+1/a/\2=11, then a+1/a=?
Nadya [2.5K]

Answer:

\pm \sqrt{13}

Step-by-step explanation:

\bigg(a +  \frac{1}{a}  \bigg)^{2} =  {a}^{2}   +  \frac{1}{ {a}^{2} }  + 2 \times a \times  \frac{1}{a}  \\  \\ \bigg(a +  \frac{1}{a}  \bigg)^{2} = 11 + 2 \\  \\   \bigg(a +  \frac{1}{a}  \bigg)^{2} = 13 \\  \\  \bigg(a +  \frac{1}{a}  \bigg) =  \pm \sqrt{13}

5 0
3 years ago
Calculate two iterations of Newton's Method to approximate a zero of the function using the given initial guess. (Round your ans
VikaD [51]

Answer:

The two iterations of f(x) = 1.5598

Step-by-step explanation:

If we apply  Newton's iterations method, we get a new guess of a zero of a function, f(x), xₙ₊₁, using a previous guess of, xₙ.

xₙ₊₁ = xₙ - f(xₙ) / f'(xₙ)

Given;

f(xₙ) = cos x, then  f'(xₙ) = - sin x

cos x / - sin x = -cot x

substitute in "-cot x" into the equation

xₙ₊₁ = xₙ - (- cot x)

xₙ₊₁ = xₙ + cot x

x₁ = 0.7

first iteration

x₂ = 0.7 + cot (0.7)

x₂ =  0.7 + 1.18724

x₂ = 1.88724

 

second iteration

x₃ = 1.88724 + cot (1.88724)

x₃ = 1.88724 - 0.32744

x₃ = 1.5598

To four decimal places = 1.5598

4 0
3 years ago
Which digit is in the thousandths place?<br><br> 1,356.209
myrzilka [38]

Answer: 9

Step-by-step explanation: The thousandths place is always three spots away from the right side of the decimal place. Whenever the question asks for the thousandTHs place then it is a decimal the question is looking for. If it ask for the thousands place (with no th) then the question is looking for an actual number, not a decimal. Hope this helped!

7 0
3 years ago
Simplify 3 square root of 10 end root plus 7 square root of 15 end root minus 6 square root of 10 end root minus 4 square root o
alexira [117]
3√10 + 7√15 - 6√10 - 4√15
3√10 - 6√10 + 7√15 - 4√15
-3√10 + 3√15

The answer is B.
3 0
4 years ago
Read 2 more answers
Wame a pair of lines that appear to be parallel.
KatRina [158]

Answer:

AB and CD are parallel

Step-by-step explanation:

because they will never intersect

6 0
3 years ago
Read 2 more answers
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