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3 years ago

How are improper fractions and mixed numbers alike

Mathematics

1 answer:

Zanzabum3 years ago

8 0

They are alike because improper fractions are the same as mixed numbers.
Example in attachment

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The ages of dogs at an animal shelter are normally distributed with a mean of 3.9 years and a standard deviation of 1.2 years.

Aleks [24]

Answer:

The correct answer is A. 1.86 years

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Mean of the dogs at an animal shelter = 3.9 years

Standard deviation = 1.2 years

2. What is the age of a dog at the shelter with a z-score of −1.7 ?

Let's recall that z-score in a normal distribution, positive or negative, is the number of times of the standard deviation a certain element is from the mean. If the element is below the mean, then the z-score is negative and if it's above the mean, then the z-score is positive.

Therefore, a z-score of - 1.7 for the ages of dogs is:

-1.7 * 1.2 = -2.04

Now, we calculate the value using the mean, this way:

3.9 + -2.04 = 3.9 - 2.04 = 1.86

The correct answer is A. 1.86 years

Note: Same answer to question 14270011, answered by me today.

3 0

3 years ago

Josh had $10 more than Carly, so he gave Carly half of his money. Then Carly had more money than josh, so she gave Josh $4. Then

DedPeter [7]

each person starts with $8.

Step-by-step explanation:

Here we have , Josh had $10 more than Carly, so he gave Carly half of his money. Then Carly had more money than josh, so she gave Josh $4. Then they both had $13. We need to find How much money did each person start . Let's find out:

Suppose Carly had $x , Josh had $10 more than Carly i.e. $(x+10), so he gave Carly half of his money i.e.

⇒ $\frac{x+10}{2}$ ,Now , Josh have $ $\frac{x+10}{2}$ & Carly have $x + \frac{x+10}{2}$ .

Then Carly had more money than josh, so she gave Josh $4 . So ,

Josh now have $ $(4+\frac{x+10}{2})$ and Carly now have $ $(x+\frac{x+10}{2} -4)$ . Since both are equal :

⇒ $(x+\frac{x+10}{2} -4) = (4+\frac{x+10}{2})$

⇒ $x-4 = 4$

⇒ $x=8$

Therefore , each person starts with $8.

8 0

2 years ago

Please help! Correct answer only, please! Consider the following table. A movie theatre is planning to increase each of their va

dezoksy [38]

Answer: D

Step-by-step explanation:

In order to increase each ticket by $2, you are ADDING 2 to each value.

So you create a matrix of all 2's and add that to the given matrix.

$\left[\begin{array}{cc}2&2\\2&2\\2&2\end{array}\right] +\left[\begin{array}{cc}8&10\\12&16\\6&8\end{array}\right]\quad =\quad \large \left[\begin{array}{cc}10&12\\14&18\\8&10\end{array}\right]$

7 0

3 years ago

there are seventeen students in a class. twice a year each student gets a new box of crayons. boxes of crayons are package in gr

Leya [2.2K]

17 x 2 = 34 boxes of crayons per year
8.98 x 34 = $305.32 for the year

5 0

3 years ago

Read 2 more answers

Which of the following tables represents exponential functions?

HACTEHA [7]

The 2 graphs on the left are exponential
The other 2 are linear

5 0

3 years ago