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NemiM [27]
3 years ago
7

Plz help !!!!!!!!!!!!

Mathematics
2 answers:
Nutka1998 [239]3 years ago
4 0

Answer:

c. 1/4 or 25% or 0.25

Step-by-step explanation:


Rashid [163]3 years ago
4 0

Answer:

C  1/4

Step-by-step explanation:

When the bases are the same, we can add the exponents

x^a * x^b = x^ (a+b)


4^2 * 4^(-3)

4^(2-3)

4^(-1)

The negative exponent puts it in the denominator

1/4

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When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite. When working with the graph of y = f (x), replace x with -x. Reflection in y = x: When you reflect a point across the line y = x, the x-coordinate and the y-coordinate change places.

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julsineya [31]
6. 1 \frac{1}{2} = \frac{6}{4} since \frac{1}{4} = 4 feet. Then 6*4=24 So the answer is C

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8. A. Since 1 in = 3 feet then 6 inches = 18 feet (6*3=18) and 4 inches = 12 feet (4*3=12) so the dimensions of her room are 16'x12'.

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Read 2 more answers
Evaluate the expression 2x - 5 when x = -5 <br> C) 5<br> D) 15<br> A)-5<br> B) -15
IRINA_888 [86]

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Step-by-step explanation:

8 0
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Approximately 14 percent of the population of Arizona is 65 years or older. A random sample of five persons from this population
Andreas93 [3]

Answer:

A)0.8533

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are 65 or older, or they are not. The probability of a person being 65 or older is independent of any other person. So we use the binomial probability distribution to solve this question.

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 combinations 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.

14 percent of the population of Arizona is 65 years or older.

This means that p = 0.14

A random sample of five persons from this population is taken.

This means that n = 5

The probability that less than 2 of the 5 are 65 years or older is :

P(X < 2) = P(X = 0) + P(X = 1)

In which

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

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P(X < 2) = P(X = 0) + P(X = 1) = 0.4704 + 0.3829 = 0.8533

So the correct answer is:

A)0.8533

3 0
3 years ago
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