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Arada [10]
3 years ago
8

Expand 2(n+7).2(n+7) = ?​

Mathematics
1 answer:
Anni [7]3 years ago
3 0

Answer:

2n+14

Step-by-step explanation:

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So i need help with the question below.
Shkiper50 [21]

Answer:

Option (1)

Step-by-step explanation:

Option (1)

3\frac{3}{9}+7\frac{6}{11}=10\frac{87}{99}

3\frac{3}{9}+7\frac{6}{11} =3+\frac{3}{9}+7+\frac{6}{11}

             =(3+7)+(\frac{3}{9}+\frac{6}{11})

             =10+(\frac{3}{9}\times \frac{11}{11})+(\frac{6}{11}\times \frac{9}{9})

             =10+(\frac{33}{99}+\frac{54}{99})

             =10+\frac{87}{99}

             =10\frac{87}{99}

True.

Option (2)

2\frac{3}{8}+6\frac{4}{5}=8\frac{12}{40}

2\frac{3}{8}+6\frac{4}{5}=2+\frac{3}{8}+6+\frac{4}{5}

             =(2+6)+(\frac{3}{8}+\frac{4}{5})

             =(8)+(\frac{3}{8}\times \frac{5}{5} +\frac{4}{5}\times \frac{8}{8})

             =8+(\frac{15}{40}+\frac{32}{40})

             =8+\frac{47}{40}

             =8+\frac{40}{40}+\frac{7}{40}

             =8+1+\frac{7}{40}

             =9+\frac{7}{40}

             =9\frac{7}{40}

False.

Option(3)

3\frac{3}{7}+4\frac{2}{3}=7\frac{2}{21}

3\frac{3}{7}+4\frac{2}{3}=(3+\frac{3}{7})+(4+\frac{2}{3})

             =(3+4)+(\frac{3}{7}+\frac{2}{3})

             =7+(\frac{3}{7}\times \frac{3}{3} +\frac{2}{3}\times \frac{7}{7})

             =7+(\frac{9}{21}+\frac{14}{21})

             =7+(\frac{23}{21})

             =7+(\frac{21}{21}+\frac{2}{21})

             =8+\frac{1}{21}

             =8\frac{1}{21}

False.

Option (4)

4\frac{5}{6}+5\frac{5}{7}=9\frac{10}{13}

4\frac{5}{6}+5\frac{5}{7}=4+\frac{5}{6}+5+\frac{5}{7}

             =(4+5)+(\frac{5}{6}+\frac{5}{7})

             =9+(\frac{5}{6}\times \frac{7}{7}+\frac{5}{7}\times \frac{6}{6})

             =9+(\frac{35}{42}+\frac{30}{42})

             =9+\frac{65}{42}

             =9+(\frac{42}{42}+\frac{23}{42})

             =9+1+\frac{23}{42}

             =10\frac{23}{42}

False.

Therefore, Option (1) is the answer.

8 0
3 years ago
If you can help with this thank you very much
Y_Kistochka [10]

Answer:

42

Step-by-step explanation:

because that's the answer

3 0
3 years ago
The winners of a carnival game draw a ticket from a box to determine their prize. Each winner draws a ticket and places it back
swat32

Answer:

He generates a random whole number from 1 to 3.

Step-by-step explanation:

Each winner has 3 possibilities, gets cotton candy, gets a shirt, or gets a keychain. We can asign each of this possibiltiies a number, 1 for cotton candy, 2 for the shirt and 3 for a keychain. So, for a simulation, its enough to take one of this whole numbers for each winner.

6 0
3 years ago
Chandler can mow 2 lawns per hour. Use an equation to determine the number of hours it will take him to mow 7 lawns.
Gre4nikov [31]

Answer:

3 1/2

Step-by-step explanation:

2x2x2 is 6 and 1/2 of 2 is 1 which means 6+1 is 7 so it's 3 and half

8 0
3 years ago
2x+4=xg, solve for X
vovikov84 [41]
2x+4-4=xg-4
2x÷2=xg-4/2
x=xg-4/2
5 0
4 years ago
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