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Lina20 [59]
3 years ago
5

Show twelve in four different ways

Mathematics
1 answer:
Lostsunrise [7]3 years ago
5 0
12 can be shown in four different ways by performing subtraction, addition, multiplication, and/or division:

14 - 2
6 + 6
3 x 4
60 / 5

All of these expressions result in 12.
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1.
enyata [817]
I think there are no solutions - firstly, you can't add two numbers and get one solution, and add the same two numbers up again and get a different solution!

also, if you plot the two lines on a graph they never intersect, showing there are no values of x or y that satisfy both equations.

8 0
4 years ago
3x – 3y = -9<br> 4x + 4y= 12<br><br><br> show me the steps for substitution?
Alchen [17]

Answer:

y=3 and x=0

Step-by-step explanation:

3x−3y=−9. i'm going to solve for x.

3x−3y<em>+3y</em>=−9<em>+3y</em>

3x=3y−9

3x/3=(3y-9)/3  to isolate x we have to divide everything by 3

x=y−3

so now that we have x we can substitute it in 4x+4y=12

4(y-3)+4y=12

4y-12+4y=12

8y-12=12

8y-12<em>+12</em>=12<em>+12</em>

8y=24

8y/8=24/8

y=3

we have y which equals 3, so now we can substitute it into any equation so solve for x again.

3x – 3y = -9

3x-3(3)=-9

3x-9=-9

3x-9+9=-9+9

3x=0

3x/3=0/3

x=0

so, final answers are y=3 and x=0

checking our work:

3(0)-3(3)=-9

0-9=-9

-9=-9 true

4(0)+4(3)=12

0+12=12

12=12 true

6 0
3 years ago
Mrs. Mack teaches three art classes, and there are 30 students in each dass. She has a supply
laila [671]

Answer: 3/5

Step-by-step explanation:

1. Multiply 30 by 3 (90)

2. 90 becomes the numerator and 150 becomes the denominator

3. Divide the numerator (90) and the denominator (150) by the greatest common factor (30), to simplify the fraction

4. You should come to the answer 3/5

Hope this helps.

6 0
3 years ago
a farmers land is separated into sections of size 2 1/7 acres. Suppose there are 2 2/3 such sections. how many acres of land doe
Mademuasel [1]

Answer:

  5 5/7 acres

Step-by-step explanation:

The product is ...

  (2 1/7 acres/section)(2 2/3 sections) = (15/7)(8/3) acres = 40/7 acres

  = 5 5/7 acres

The farmer owns 5 5/7 acres of land.

4 0
3 years ago
Mr. Prieto gets 16 points on a CFA that has 20 points possible. What is his percent correct?
hram777 [196]

Answer:

80%

Step-by-step explanation:

16/20×100

0.8×100=80

5 0
3 years ago
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