Mrs. Reid is going on a trip. She has 9 book that she hasn't ready yet, but she wants to bring only 3 on the trip.

1 answer:

7 0

The way you work this out is by thinking about the odds of each singular event, then finding the overall odds based on the individual odds.

The number of different books Mrs. Reid can choose is 9, so the first number is 9.

Mrs. Reid has picked one book so far, so now she has (1 - 9) = 8 books to choose from.
The of different books Mrs. Reid can choose now is 8, so your second number is 8.

Mrs. Reid has picked 2 book thus far, so now there are (2 - 9) = 7 books to choose from.
The of different books Mrs. Reid can choose now is 7, so your second number is 7.

To get the total number of different choices, multiply all the singular events together:

$7*8*9=504\ different\ ways\ to\ bring\ 3\ books$

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Which of the following are solutions to this equation 3n+4=24-n a) n=1 b) n=3 c) n=5 d) n=7

g100num [7]

Answer:

The correct option is c) n=5.

Therefore the solution to

$3n+4=24-n$

$n=5$

Step-by-step explanation:

Given:

$3n+4=24-n$

To Find;

n = ?

Solution:

$3n+4=24-n$ ........Given

Add + n to both the side

$3n+4+ n=24-n+n\\4n+4=24$

Now Subtract 4 on both the side

$4n+4-4=24-4\\4n=20$

Dividing by 4 on both side

$\dfrac{4n}{4}=\dfrac{20}{4}\\\\n=5$

Therefore the solution to

$3n+4=24-n$

$n=5$

4 0

2 years ago

Estimates show that there are 1.4x10^8 pet fish and 9.4x10^6 pet reptiles in the United States. How many pet fish and reptile pe

azamat

Answer:

There are total number of pet fish and reptile pets are $1.49\times 10^8$ .

Step-by-step explanation:

Number of pet fish are $1.4\times 10^8$ and the number of pet reptiles are $9.4\times 10^6$ .

It is required to find the total number of pet fish and reptile pets in the United States. It can be done by simply adding the above numbers such that total numbers are given by :

$T=1.4\times10^{8}+9.4\times10^{6}\\\\T=149400000\\\\T=1.49\times 10^8$