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Y_Kistochka [10]
2 years ago
7

Please help its a growth and decay problem

Mathematics
1 answer:
Tomtit [17]2 years ago
7 0
So you have to find 7% of 15,300 to start decreasing
7% of 15,300 is 1,071 therefore you do this problem: 15,300 - 1,071 = 14,229
Now the question from me is: do you keep the 7% of 15,300 or do you find the 7% of 14,229?
I did the math for both ways:

7% of 15,300 continuously = 3,519 acres in 2013

Or

7% of every resulting number after 15,300 = 6,851 acres in 2013

Hope this helps and you’ll probably have a better chance if it’s multiple choice ;) good luck
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There are 15 male teachers in the school. There are 35 female teachers in the school. <br><br>​
Alex777 [14]

Answer:

the ratio of make to female teachers is 3:7

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2 years ago
Katy has 15 flamingos in her front yard and 9 flamingos in her backyard. Which equation shows one way to find how many fewer fla
Svetlanka [38]

Answer:

Step-by-step explanation:

I need the answer too help

3 0
2 years ago
Read 2 more answers
A piggy bank contains pennies, nickels, and dimes. The number of dimes is 15 more than the number of nickels, and there are 140
amm1812

Answer:

Option D is correct.

There are 34 nickels in the piggy bank.

Step-by-step explanation:

A piggy bank contains pennies, nickels and dimes.

Let the number of pennies be p

Let the number of nickels be n

Let the number of dimes be d

Also, note that 1 penny = $0.01

1 nickel = $0.05

1 dime = $0.10

- The number of dimes is 15 more than the number of nickels.

d = 15 + n

- There are 140 coins altogether totaling $7.17.

p + n + d = 140

0.01p + 0.05n + 0.1d = 7.17

Bringing the 3 equations together

d = 15 + n (eqn 1)

p + n + d = 140 (eqn 2)

0.01p + 0.05n + 0.1d = 7.17 (eqn 3)

Substitute (eqn 1) into (eqn 2)

p + n + d = 140

p + n + (15 + n) = 140

p + 2n + 15 = 140

p = 140 - 15 - 2n = 125 - 2n

p = 125 - 2n (eqn 4)

Substitute (eqn 1) and (eqn 4) into (eqn 3)

0.01p + 0.05n + 0.1d = 7.17

0.01(125 - 2n) + 0.05n + 0.1(15 + n) = 71.7

1.25 - 0.02n + 0.05n + 1.5 + 0.1n = 7.17

0.1n + 0.05n - 0.02n + 1.5 + 1.25 = 7.17

0.13n + 2.75 = 7.17

0.13n = 7.17 - 2.75 = 4.42

0.13n = 4.42

n = (4.42/0.13) = 34

d = 15 + n = 15 + 34 = 49

p = 125 -2n = 125 - (2×34) = 125 - 68 = 57

Hence, there are 57 pennies, 34 nickels and 49 dimes in the piggy bank.

Hope this Helps!!!

7 0
3 years ago
Solve the problem.
Snezhnost [94]

The total cost for plumber number 1 expressed as a function of x is

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I stopped figuring out titles :'D
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Number 8 is b I think
5 0
2 years ago
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