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Blababa [14]
3 years ago
5

Solve and simply using prime factorization please

Mathematics
1 answer:
alex41 [277]3 years ago
7 0

Step-by-step explanation:

these look easy you can probably just type it into a calculator, just show your work.

not sure where you got 20 from on the first problem it should be 9/12 I think, based on the examples at the top of the page.

1. 9/12

2. 16/22

3. 30/36

4. 28/44

5. 45/55

6. 50/60

The "/" indicates division btw and or fraction

then do the #x#x#x#x# thing you were doing

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at a party, everyone shook hands with everybody else. there were 66 handshakes. How many people shook hands?
Whitepunk [10]

Answer:

12

Step-by-step explanation:

0 + 1 + 2 + 3+ 4 + 5 + 6 + 7 +8 + 9 + 10 + 11 seems to equal 66. That means there are 11 + 1 = 12 people (don’t forget to count the person who shakes 0 hands)

7 0
3 years ago
Subtitute 2x+y=7 and 3x-y=8
iogann1982 [59]

Answer:

x = 3 , y = 1

Step-by-step explanation:

2x + y = 7

3x + y = 8

solution

2x + y = 7-----------(1)

3x - y = 8------------(2)

from equation 1

2x + y = 7

y = 7 - 2x-------------(3)

substitute equation 3 into equation 2

3x - y = 8

3x - (7 - 2x) = 8

3x - 7 + 2x = 8

3x + 2x = 8 + 7

5x = 15

divide through by the coefficient of x

5x/5 = 15/5

x = 3

to find y

substitute x into equation 1

2x + y = 7

2(3) + y = 7

6 + y = 7

y = 7 - 6

y = 1

8 0
3 years ago
Convert 4/7 to decimals using long divison​
Elena-2011 [213]
I think it’s 1.75 sorry if this is wrong
3 0
3 years ago
6) find HJ<br> 8)find IK
Anastasy [175]

Answer:

HJ = 17

IK = 30

Step-by-step explanation:

to find HI :

GH : 2

HI : ?

IJ : 12

GI : 7

HI = GI - GH

HI = 7- 2

HI = 5

HI + IJ = HJ

5 + 12 = HJ

17 = HJ

To find IK

IJ = ?

JK = 12

KL = ?

IL = 49

JL = 31

To find IK we need to find KL and IJ

KL = JL - JK

KL = 31 - 12

KL = 19

IJ = IL - (JK + KL)

IJ = 49 - 31

IJ = 18

IK = IJ + JK

IK = 18 + 12

IK = 30

4 0
3 years ago
Three students in a painting class made green paint by mixing blue and yellow paint. The table below shows the comparison of oun
tresset_1 [31]

Answer:

Clara

Step-by-step explanation:

7 0
3 years ago
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