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Vanyuwa [196]
3 years ago
9

Julia buys 12 books. She gives 9 books away.how many books does she have left?

Mathematics
2 answers:
7nadin3 [17]3 years ago
8 0
She would have 3 left
earnstyle [38]3 years ago
4 0
This is modeled by a subtraction problem: 12 - 9

The answer is 3
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I need answers fast<br> Solve x/12+1/3=−5/3.
Sergeeva-Olga [200]

Answer:

x = -24

Step-by-step explanation: Please brainliest!

Subtract 1/3 from both sides of the equation.

x/12 + 1/3 = 5/3

x/12 + 1/3 - 1/3 = -5/3 - 1/3

-----------------------------------------------------------

Simplify and subtract the numbers.

x/12 = 2

-----------------------------------------------------------

Multiply all terms by the same value to eliminate fraction denominators.

x/12 = -2

12 . x/12 = 12 (-2)

------------------------------------------------------------

Cancel multiplied terms that are in the denominator.

12 . x/12 = 12 (-2)

x = 12 (-2)

------------------------------------------------------------

Multiply the numbers.

x = 12 (-2)

x = -24

Answer x = -24

7 0
2 years ago
Read 2 more answers
Solve y = mx + b for x
eimsori [14]
Y=mx+b
-b -b
--------------
-by= mx
-------------
m m

-by
------
m
8 0
3 years ago
An experiment consists of flipping a single coin followed by rolling a six-sided cube (a die).
Over [174]

Answer:\frac{1}{12}

Step-by-step explanation:

Okay, first, you want to find the probability of getting a head, which would be 1/2 because there are two options and we are only looking for one out of the two. Then, the probability of getting a 6 would be 1/6 because there is only one chance of getting a 6 and there are 6 options. Next, you would have to multiply both quantities to find out what the probability would be of getting both. So it would be \frac{1}{2} ×\frac{1}{6}=\frac{1}{12}

8 0
3 years ago
Read 2 more answers
Kristin earns $6.50 for every hour she babysits for the Overstreet family. Part A: Last Friday, Kristin babysat for 4.5 hours. H
soldier1979 [14.2K]

Answer: Part A: she would make 35.75

Part B:  She would work for 7 hours

Step-by-step explanation:

Part A: $6.50+4.5=35.75

Part B: $45.50 dived by $6.50 would be 7. So she worked 7 hours

8 0
3 years ago
The original quantity is 20 and the new quantity is 15. Adam incorrectly says the percent decrease is about ​14.29%. What is the
Yuki888 [10]

Answer: A. divided the difference of the two quantities by the sum of the two quantities.

===================================================

Explanation:

The difference of the quantities is 20-15 = 5

The sum of the quantities is 20+15 = 35

Dividing those results leads to 5/35 = 0.142857 which rounds to 0.1429

That converts to 14.29%

This is likely the path Adam took. This path is incorrect. The correct steps are shown below

---------------------

Difference = 20-15 = 5

Divide the difference over the original quantity

5/20 = 1/4 = 0.25 = 25%

We have a 25% decrease because the new quantity (15) is smaller than the old quantity (20)

----------------------

Here's another way to approach the problem

A = old value = 20

B = new value = 15

C = percent change

C = [ (B-A)/A ] * 100%

C = [ (15-20)/20 ] * 100%

C = (-5/20)*100%

C = -0.25*100%

C = -25%

The negative C value means we have a negative percent change, ie we have a percent decrease. So this is another way to get a 25% decrease.

4 0
2 years ago
Read 2 more answers
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