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4 years ago

Choose the correct simplification of the expression (5x^5)^2 5x^25 10x^10 25x^7 25x^10

Mathematics

1 answer:

Free_Kalibri [48]4 years ago

4 0

Answer:

$25x^{10}$

Step-by-step explanation:

$(5x^5)^2\\\\\text {Apply Rule: }(a*b)^n=a^n b^n\\\\(5x^5)^2=5^2(x^5)^2\\\\25(x^5)^2\\\\\text {Apply rule: } (a^b)^c=a^{bc}\\\\25(x^5)^2=\boxed{25x^{10}}$

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Find the length of the missing side

Solnce55 [7]

Answer:

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

c² = 4² + 5² = 16 + 25 = 41 ( take the square root of both sides )

c = $\sqrt{41}$ ← exact solution → C

8 0

3 years ago

Consider the following binomial experiment. The probability that a green jelly bean is chosen at random from a large package of

Flura [38]

Answer:

There is a 5.79% probability that at most 2 jelly beans are chosen.

Step-by-step explanation:

For each jelly bean chosen, there are only two possible outcomes. Either it is green, or it is not. This is why we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinatios of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem we have that:

There are 13 jelly beans, so $n = 13$ .

The probability that a green jelly bean is chosen at random from a large package of jelly beans is 2/5. This means that $p = 0.4$ .

If Sally chooses 13 jelly beans, what is the probability that at most two will be green jelly beans?

This is

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)$ .

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{13,0}.(0.4)^{0}.(0.6)^{13} = 0.0013$

$P(X = 1) = C_{13,1}.(0.4)^{1}.(0.6)^{12} = 0.0113$

$P(X = 1) = C_{13,2}.(0.4)^{2}.(0.6)^{111} = 0.0453$

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0013 + 0.0113 + 0.0453 = 0.0579$ .

There is a 5.79% probability that at most 2 jelly beans are chosen.

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3 years ago

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Mamont248 [21]

B. 7 percent

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3 years ago

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It would be 0.07 cents

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3 years ago

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3 years ago

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