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3 years ago

Evaluate |x-13| when x=5. A.8 B.-8 C.21 D.-21

1 answer:

8 0

5 - 13 = -8

But remember it is in the ||. This means the answer will, no matter what, be positive.

So the answer is |-8|, or +8.

A is the answer.

Now for an explanation of why the || makes it positive.

They are know as "absolute values." Absolute values will always, no matter what, be a positive number. These can be very tricky to deal with, but just remember to answer what is in the || first, and THEN do the absolute value. Remember that on a number line, the middle is always 0. And because -8 and 8 are both 8 spaces away from 0, the absolute value will be 8. This is why it is positive. You cannot be negative spaces away from something.

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Nolan begins to find the mean absolute deviation of a data set. he finds the mean of the data and then finds the distance betwee

vfiekz [6]

The next step Nolan should take is to find the average of the distances from the mean.

<h3>What is meant by mean absolute deviation?</h3>

A measure of variance in a data set is the mean absolute deviation. We may determine how "spread out" the values in a data collection are by looking at the mean absolute deviation.

The steps to find mean absolute deviation are:

Calculate the mean of the data set
Calculate the value of distance between the mean and each point in the data set.
Find the average of the distances from the mean.

Hence, The next step Nolan should take is to find the average of the distances from the mean.

Learn more about mean on:

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7 0

2 years ago

F(x)=3x-5 please help :>

Molodets [167]

Answer:

x= 5/3?????

Step-by-step explanation:

try using math

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6 0

3 years ago

A rectangle has an area of 143 square meters and a width of 6. 5 meters. What is the length, l, of this rectangle? l = 121 m l =

lapo4ka [179]

L = 22 because area equals length times width. So if you divide the area (143) by the width (6.5) you get 22

8 0

2 years ago

Read 2 more answers

Solve for X

tigry1 [53]

Answer:

$x = \pm e^{-1}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

Algebra I

Solving quadratics
Multiple roots

Algebra II

Logarithms
Euler's number e

Step-by-step explanation:

Step 1: Define

$\displaystyle ln(x^2) = -2$

Step 2: Solve for x

Raise both sides by e: $e^{\displaystyle ln(x^2)} = e^{-2}$
Simplify equation: $x^2 = e^{-2}$
Square root both sides: $x = \pm e^{-1}$

7 0

2 years ago

Read 2 more answers

NEED HELP QUICK!! :)

Vlada [557]

Let x and y be your two consecutive whole numbers

x < sqrt(142) < y
x^2 < 142 < y

So, we are looking for x and y such that x^2 < 142 and y^2 > 142.

The closest squared number to 142 is 144 = 12^2.
Next is 11^2 = 121.

11 and 12 are consecutive.

11^2 = 121 < 142 < 144 = 12^2

Thus, 11 and 12 are your numbers

8 0

3 years ago