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Korvikt [17]
3 years ago
11

Lisa's penny bank is 1/10 full. After she adds 440 pennies, it is 3/5 full. How many pennies can Lisa's bank hold?

Mathematics
1 answer:
aksik [14]3 years ago
4 0

Answer:

Step-by-step explanation:

After the 440 pennies are added, the bank is 3/5 full.  It started out 1/10 full, so

3/5 - 1/10 is the amount of space in the bank that the 440 pennies took up, or

1/2.  Use proportions to solve this, with number of pennies on the top and the fraction of the bank that is filled on the bottom:

\frac{440}{\frac{1}{2} }=\frac{x}{1}

where x is the number of pennies (our unknown) that it will take to fill the bank (1).  Cross multiply to get

\frac{1}{2}x=440

so x = 880

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there is $3080 in the math department fund. They need to deposit enough money in the fund to pay for a shipment work $2800, and
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Answer:

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3 years ago
Given the relation y = 7x2 + 3, if the input is 4, what is the output? (4 points)
aivan3 [116]
I'm assuming that you meant: 
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y = 7(4)² + 3 

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Remember: 
Parenthesis
Exponents
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Division
Addition
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Follow PEMDAS from left to right (or in the case above from top to bottom).

7·16 + 3 = ? 

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