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il63 [147K]
3 years ago
11

What is the radical form of each of the given expressions?

Mathematics
1 answer:
earnstyle [38]3 years ago
7 0

Answer:

6^{\frac{1}{5} }=\sqrt[5]{6}

6^{\frac{7}{5} }=\sqrt[5]{6^7}

6^{\frac{1}{6} }=\sqrt[6]{6}

7^{\frac{1}{2} }=\sqrt[2]{7}

7^{\frac{5}{2} }=\sqrt[2]{7^5}

6^{\frac{9}{2} }=\sqrt[2]{6^9}

Step-by-step explanation:

A radical is the root operation for n roots such as square root or cuberoot in the form \sqrt[n]{x}. A fraction exponent x^{m/n} can be converted to the radical form.

6^{\frac{1}{5} }=\sqrt[5]{6}

6^{\frac{7}{5} }=\sqrt[5]{6^7}

6^{\frac{1}{6} }=\sqrt[6]{6}

7^{\frac{1}{2} }=\sqrt[2]{7}

7^{\frac{5}{2} }=\sqrt[2]{7^5}

6^{\frac{9}{2} }=\sqrt[2]{6^9}

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Assume that random guesses are made for seven multiple choice questions on an SAT test, so that there are n=7 trials, each with
Vedmedyk [2.9K]

Answer:

P(X < 4) = 0.5

Step-by-step explanation:

For each question, there are only two possible outcomes. Either it is answered correctly, or it is not. The probability of a question being answered correctly is independent of any other question. This means that 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.

In this question, we have that:

n = 7, p = 0.5

Find the probability that the number of correct answers is fewer than 4:

This is

P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)

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

P(X = 0) = C_{7,0}.(0.5)^{0}.(0.5)^{7} = 0.0078

P(X = 1) = C_{7,1}.(0.5)^{1}.(0.5)^{6} = 0.0547

P(X = 2) = C_{7,2}.(0.5)^{2}.(0.5)^{5} = 0.1641

P(X = 3) = C_{7,3}.(0.5)^{3}.(0.5)^{4} = 0.2734

P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.0078 + 0.0547 + 0.1641 + 0.2734 = 0.5

So

P(X < 4) = 0.5

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A slice of pizze is shaped like an isosceles triangle. If the tip is 32°, how big are the base angles?
aev [14]

The base angles are both 74°

Further explanation:

An isosceles triangle is a type of triangle that has two sides and two angles equal.

Let A, B and C be three angles

Let A=32°

If A is 32 then B and C will be equal

The internal angles of a triangle are 180°

So,

m∠A+m∠B+m∠C=180°

We know that B and C are equal

m∠B=m∠C

So putting the value of A and replacing C by B

32°+m∠B+m∠B=180°

32°+2m∠B=180°

2m∠B=180°-32°

2m∠B=148°

m∠B=148°/2

m∠B=74°

As

m∠B=m∠C

So

m∠C=74°

The base angles are both 74°

Keywords: Isosceles Triangle, Angles

Learn more about Isosceles triangle at:

  • brainly.com/question/2116906
  • brainly.com/question/2131336

#LearnwithBrainly

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