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sukhopar [10]
3 years ago
10

A dilation with a scale factor of 1/3 is a reduction.

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
8 0
That's true.
That will make the thing a third of its original size.
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What’s 2 +2x7x8+3x78=?
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10.5% of the population is 65 or older. Find the probability that the following number of persons selected at random from 25 peo
julia-pushkina [17]

Given:

The sample size n=25

Probability of population is 65 or older is 10.5%.

This date follows the binomial distribution,

\begin{gathered} n=25,p=0.105 \\ X\rightarrow B(n=25,p=0.105) \end{gathered}

To find the probability that at most 2 are 65 or older,

\begin{gathered} P(X=x)=^nC_x(p)^x(1-p)^{n-x} \\ P(0\leq X\leq2)=P(X=0)+P(X=1)+P(X=2) \\ =^{25}C_0(0.105)^0(1-0.105)^{25-0}+^{25}C_1(0.105)^1(1-0.105)^{25-1}+^{25}C_2(0.105)^2(1-0.105)^{25-2} \\ =0.0625+0.1832+0.2579 \\ =0.5036 \\ \approx0.504 \end{gathered}

Answer: Probability is 0.504 .

8 0
1 year ago
Write the fraction as a percent. Round to the nearest tenth of a percent of necessary. 1/7
balu736 [363]

It's 14.285714%

So, simplified it would be 14.3% because you round the 2 up since theres an 8 behind it.

8 0
3 years ago
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