MATHEMATICS COLLEGE

A woman 38 years old has a daughter 14 years old. How many years ago was the woman 8 times older than the daughter?

Answers

Answer 1

Answer:

Answer:

112 years ago

Step-by-step explanation:

38 => 14 yrs

DIfference: 24 yrs

n=8(14)

n=112

Therefore, 112 years ago

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What is the answer to this problem and why 60+60×0+1=

Answers

The answer is 61 because 60+60=120*0=0=1=61

60 + 60 x 0 + 1 = 61

Let's go into the, "why" part!

Try to remember this mnemonic:
PEMDAS

Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction

This is what is called the ORDER of OPERATIONS!

Normally you go straight down the list, but...
Keep in mind that Multiplication and Division are on the same priority. Same with Addition and Subtraction.

So first we look to see if there is any numbers in parenthesis. There is not. Any exponents? Nope!
How about Multiplication or Division?
Yep!!!!! Bingo!

60 + 60 x 0 + 1= ?

Do the multiplication first. 60 x 0 = 0 (Because anything times 0 equals 0)

Addition and subtraction come next!

60 and 0 are out so we are left with!

60 + 1 = ?

61!

For the following normal distribution, give the x-values of the inflection points of the curve (the points where the curve's concavity changes). x ~ N(0, 52)

Answers

Answer:

The x-values of the inflection points of the curve are x = -52 and x = 52.

Step-by-step explanation:

Suppose we have a normal curve with mean $\mu$ and standard deviation $\sigma$

The x-values of the inflection points of the curve are $x = \mu - \sigma$ and $x = \mu + \sigma$

x ~ N(0, 52)

This means that $\mu = 0, \sigma = 52$

$x = 0 - 52 = -52$

$x = 0 + 52 = 52$

The x-values of the inflection points of the curve are x = -52 and x = 52.

Final answer:

The inflection points in a normal distribution occur at one standard deviation above and below the mean. For the distribution x ~ N(0, 52), the inflection points are at -√52 and √52.

Explanation:

In a normal distribution, the inflection points occur at one standard deviation above and below the mean. In the given normal distribution, x ~ N(0, 52), the mean (μ) is 0 and the standard deviation (σ) is the square root of the variance, i.e., √52.

Therefore, the x-values for the inflection points would be μ - σ and μ + σ, which are -√52 and +√52, respectively.

Learn more about Inflection Points here:

brainly.com/question/31582579

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What is the value of the expression? 8 + 2 x 3--------------
5 x 2 - 8

Answers

2 x 3 6

-------------- = -------- = 3

5 x 2 - 8 2

Find the z-score for the standard normal distribution where: P (z< -a) = 0.2451

Answers

$\mathbb P(Z<-a)=0.2451\implies -a\approx-0.69\implies a\approx0.69$

Simplify the following expression: -10x + 15 - 3x + 2 *

Answers

= -10x+15-3x+2
= -13x+17

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Answers

Answer:

Step-by-step explanation:

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