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dimulka [17.4K]
3 years ago
12

Explain what operation can be used to solve the equation 3.5n=10.5. What is the value of n

Mathematics
1 answer:
coldgirl [10]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

3.5n=10.5

Divide each side by 3.5 to isolate n

3.5n /3.5 = 10.5/3.5

n =3

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Step-by-step explanation:

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Answer:

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3 years ago
Tickets to the zoo cost $14 for adults and $10 for children. A group of 12 people went to the zoo, and the tickets cost $140. Th
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 x is the number of adults and y is the number of children.
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lets multiply the first equation by -10 and then add it to the second equation:
-10x - 10y = -120
</span>14x + 10y = <span>140
</span>-----------------------
4x + 0 = 20
x = 20/4
x = 5
then substitute in the original equation:
x + y = <span>12
</span>5 + y = <span>12
</span>y = 12 - 5
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Step-by-step explanation:

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