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Mathematics

2 answers:

slega [8]4 years ago

8 0

Answer:

n=4

Step-by-step explanation:

(7+1)+n=(4+7)+1

7+1+n=4+7+1 (subtract 7 from both sides)

1+n=4+1

1+n=5

n=5-1 (Subtract 1 from both sides)

n=4

olga nikolaevna [1]4 years ago

6 0

Answer:

n = 4

Step-by-step explanation:

Actually, in this problem, you can compare the numbers on the right to the numbers on the left and see that n must be 4 to make the lists match. (It's a problem in pattern matching.)

If you need to, you can rearrange the numbers:

(7 + 1) + n = (7 + 1) + 4

If that doesn't work for you, you can add up the numbers on each side and form the equation ...

8 + n = 12

In second-grade terms, this is ...

8 + ___ = 12

Hopefully, you are sufficiently familiar with your math facts to know that 4 will complete this math fact.

If that doesn't work for you, then invoke the addition property of equality and add -8 to both sides of the equation.

8 -8 +n = 12 -8

n = 4

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3 years ago

Admission for a movie is $8 for children and $12 for adults. On a certain day, 3200 people attend the movie theater and $33,040

Nezavi [6.7K]

Let us assume the number of children attending the movie = x
Let us also assume the number of adults attending the movie = y
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Cost of admission of an adult in the movie = $12
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Then
x + y = 3200
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8x + 12y = 33040
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Let us first take the equation
x + y = 3200
x = 3200 - y
Now we will put the value of x in the equation
2x + 3y = 8260
2(3200 - y) + 3y = 8260
6400 - 2y + 3y = 8260
y = 8260 - 6400
= 1860
Now we will put the value of y from the above deduction in the equation
x + y = 3200
x + 1860 = 3200
x = 3200 - 1860
= 1340
So the number of children going to the movie theater is 1340 and the number of adults going to the movie theater is 1860.

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3 years ago

Question 11 point(s) Jared made Ask Your Teacher cups of snack mix for a party. His guests ate Ask Your Teacher of the mix. How

liq [111]

Answer:

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Step-by-step explanation:

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