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LenKa [72]
4 years ago
12

Keith has 39 books in his library. He bought several books at a yard sale over the weekend. He now has 84 books in his library.

How many books did he buy at the yard sale ?
Mathematics
1 answer:
Jobisdone [24]4 years ago
7 0

Answer:

total books in library = 39

books bought from yard sale = ??

Total book in library now = 84

Now,

books bought from yard sale= 39-84

= 45

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The degree measures of the angles of a triangle are represented by x, 3x and 5x -54.
lora16 [44]

Answer:

x = 26

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180° , then

x + 3x + 5x - 54 = 180 , that is

9x - 54 = 180 ( add 54 to both sides )

9x = 234 ( divide both sides by 9 )

x = 26

7 0
3 years ago
for a two week period, john and amanda had the following transactions occur to their cheking account: a deposit of $1,644.50;che
QveST [7]

a deposit of $1,644.50;checks written for $190, $45, and $7.50;  and debit card transactions for $30, $5.59, $7.20, and $21.30.

amount deposited = 1644.50

debit card transactions for $30, $5.59, $7.20, and $21.30.

We add all the debit card transactions

30 + 5.59 + 7.20 + 21.30 =64.09

checks written for $190, $45, and $7.50

Add all the check written amounts

190 + 45 + 7.50=242.5

To find ending balance , we subtract the debit card transactions and check written from the deposit amount

1644.50 - 64.09 - 242.5 = 1337.91

$1,337.91 is the ending balance for this time frame

8 0
3 years ago
0.25x2 -0.25x - 10.5 = 0<br><br>​
Tpy6a [65]

x=7 or x=-6

Let's solve your equation step-by-step.

0.25x2−0.25x−10.5=0

For this equation: a=0.25, b=-0.25, c=-10.5

0.25x2+−0.25x+−10.5=0

Step 1: Use quadratic formula with a=0.25, b=-0.25, c=-10.5.

x=

−b±√b2−4ac

2a

x=

−(−0.25)±√(−0.25)2−4(0.25)(−10.5)

2(0.25)

x=

0.25±√10.5625

0.5

x=7,−6

6 0
3 years ago
Which of the following phrases translates to x - 9?
Vesnalui [34]

Answer:

the difference between nine and a number

Step-by-step explanation:

4 0
3 years ago
3 divided by 225 patrial quotients
Karolina [17]

Answer:

0.0133

Step-by-step explanation:

Set up the long division.

225 | 3

2 Calculate 300 ÷ 225, which is 1 with a remainder of 75.

0 . 01

_____

225 | 3.  

2 . 25

__

     75

3 Bring down 0, so that 750 is large enough to be divided by 225.

0 . 01

_____

225 | 3.  

2 . 25

__

     750

4 Calculate 750 ÷ 225, which is 3 with a remainder of 75.

0 . 013

______

225 | 3.  

2.25

__

750

675

___

 75

5 Bring down 0, so that 750 is large enough to be divided by 225.

0. 0 1 3

_______

225 | 3.    

2.25

__  

750

675

_____

   75

6 Calculate 750 ÷ 225, which is 3 with a remainder of 75.

0 . 0133

_______

225 | 3.    

2. 25

__  

750

675

___

750

675

___

75

7 Therefore, 3 ÷ 225 ≈ 0.0133.

Answer: 0.0133

4 0
3 years ago
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