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3 years ago

At the beginning of the week, Stewart's checking account had a balance of $-12.07. On Monday morning he deposited a

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

4 0

Answer:

$304.38

Step-by-step explanation:

$-12.07 + $216.45 +$100.00=

216.45+ 100.00= 316.45 - 12.07 = 304.38

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Tim must read 2 books from a list of 7 recommended books for his summer reading program. In how many different ways can Tim choo

Marianna [84]

There are 21 ways Tim choose 2 books from the 7 recommended book

Solution:

Given that Tim must read 2 books from a list of 7 recommended books for his summer reading program

To find: different ways can Tim choose 2 books from the 7 recommended books

This is a combination problem

A combination is a selection of all or part of a set of objects, without regard to the order in which objects are selected

The formula for combinations is:

$n C_{r}=\frac{n !}{r !(n-r) !}$

where n represents the number of items, and r represents the number of items being chosen at a time

Here we have to choose 2 books from 7 books

Therefore, n = 7 and r = 2

Substituting values in above formula, we get

$\begin{aligned}&7 C_{2}=\frac{7 !}{2 !(7-2) !}\\\\&7 C_{2}=\frac{7 !}{2 ! \times 5 !}\end{aligned}$

For a number n, the factorial of n can be written as,

$n !=n \times(n-1) \times(n-2) \dots \dots \times 2 \times 1$

Therefore, we get

$7 C_{2}=\frac{7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1}{2 \times 1 \times 5 \times 4 \times 3 \times 2 \times 1}\\\\7C_2 = 7 \times 3 = 21$

Thus there are 21 ways Tim choose 2 books from the 7 recommended book

7 0

3 years ago

Find the values of a through e that make these two relations inverses of each other.

SSSSS [86.1K]

A=-3.8

B=-2.6

C=1.7

D=4.4

E=1.0

7 0

3 years ago

Read 2 more answers

2m-1-5m+4 what is the answer?

KiRa [710]

$2m-1-5m+4$

$(2m-5m)-1+4

 
$ $Gather \ like \ terms$

$-3m-1+4$

$-3m+3$

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3 years ago

When Willie walked up to his grandfather's cuckoo clock, it showed 12 hours and 5 minutes. He started turning the minute hand un

Reptile [31]

Answer:

24 and 5 minutes

Step-by-step explanation:

pa heart

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2 years ago

Read 2 more answers

What is 0.25 divided by 1.075?

timurjin [86]

0.25 divided by 1.075 is 0.2325..
But I think 1.075 divided by 0.25 sounds more right, in case that is the problem then the answer is 4.3

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3 years ago