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RideAnS [48]
4 years ago
9

Given the two expressions shown below: A. square root of 64 plus square root of 5 B. square root of 64 plus square root of 4 Whi

ch statement best describes the two expressions? (5 points) Select one: a. Both are rational. b. Both are irrational. c. A is rational, but B is irrational. d. A is irrational, but B is rational.
Mathematics
1 answer:
ElenaW [278]4 years ago
6 0

A.\ \sqrt{64}+\sqrt5=8+\sqrt5\ -\ irrational\\\\B.\ \sqrt{64}+\sqrt4=8+2=10\ -\ rational\\\\\text{Answer:}\ d.\ A\ is\ irrational,\ but\ B\ is\ rational.

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X^2 + 2x + 8 find the solution
Lina20 [59]

x^2 + 2x + 8

First, we'll try using the AC method.

(Because the degree of the quadratic is 2, there are two solutions.)

We cannot split the term using the AC method.

We'll instead use the quadratic formula.

\frac{-b +/- \sqrt{b^2 - 4ac} }{2a}

Plug in values.

(-2 +/- √4 - 32)/2

(-2 +/- √-28)/2

(-2 +/- i√28)/2

(-2 +/- 2i√7)/2

(-1 +/- i√7)

<h3>x = (-1 + i√7)</h3><h3>x = (-1 - i√7)</h3><h3>The two values of x are found.</h3>
4 0
4 years ago
Given the function: f(x) = x2 – 2x How can you restrict the domain so that f(x) has an inverse? What is the equation of the inve
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Answer:

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Step-by-step explanation:

Apply this method when doing problems similar to this one.

4 0
3 years ago
Read 2 more answers
The following table provides a probability distribution for the random variable y. Y f(y) 1 0. 20 5 0. 30 6 0. 40 9 0. 10 (a) co
Vitek1552 [10]

The probability distribution table is used to represent individual probabilities

The value of E(y) is 5.0

<h3>How to compute e(y)?</h3>

The value of e(y) is calculated using the following expected value formula

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So, we have:

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Evaluate

E(y) = 5.0

Hence, the value of E(y) is 5.0

Read more about probability distribution tables at:

brainly.com/question/9385303

3 0
2 years ago
The standard error of the estimate measures the scatter or dispersion of the observed values around a __________________________
muminat

Answer:

True mean/population mean

Step-by-step explanation:

The standard error in this case gives an estimate on how far the values observed during the course of the experiment ate likely to be from the true mean/population mean.

7 0
4 years ago
Two dice are tossed 432 times. How many times would you expect to get a sum of 4?
Vedmedyk [2.9K]
It would be 10 because the factors add up and it makes sense
5 0
3 years ago
Read 2 more answers
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