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jolli1 [7]
3 years ago
8

The simple interest on a sum of money invested for 6 months at 5% per annum is $1680. Find the amount of money invested

Mathematics
1 answer:
olga55 [171]3 years ago
3 0

9514 1404 393

Answer:

  $67,200

Step-by-step explanation:

The amount if interest is given by the formula ...

 I = Prt

where P is the amount invested, r is the annual rate, and t is the number of years. Here, we want to find P when r = 0.05 and t = 1/2 such that I = 1680.

  P = I/(rt) = $1680/(0.05·0.5) = $1680/0.025

  P = $67,200

The amount invested was $67,200.

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In downtown Charlotte, building inspectors must regulate the height of buildings. From the top of the BB&T building which is
Morgarella [4.7K]

Answer:

296.89 m

Step-by-step explanation:

assuming that both the buildings are on level ground (i.e their bases are at the same elevation), see attached.

5 0
2 years ago
A movie theater charges $5 for an adult ticket and $2 for a child's ticket. One Saturday, the theater sold 785 tickets for $3280
Nadya [2.5K]

Answer:

5x + 2y = 3280

x+y = 785

x = 785 - y

5*(785 - y) + 2y = 3280

3925 - 5y + 2y = 3280

3925 - 3280 - 3y = 0

645 = 3y

y=645/3=215

x=785-215 = 570

Adults - 570 tickets, childs - 215 tickets.

570*5 + 215*2 = 3280

570 adult and 215 child and 3,280 in total

if i could get brainliest that would be great

6 0
3 years ago
Read 2 more answers
Please help me with this page
Maurinko [17]
Well i can help u with one problem 7 I don’t think it is A cause if u multiple 17.50 by 2 u will get $35.00 and when u add $43.00 that will be $78
So I think 7. Would be B

7. B
6 0
3 years ago
Write (5.64)×10^-7 as a decimal​
NARA [144]

Answer:

the awnser is 0.000000564

7 0
3 years ago
Amanda and her group of friends spent a total of $35.50 on 7 hot dogs and 6 cheese burgers. Greg and his group of friends spent
Alexeev081 [22]
7h + 6b = 35.50
5h + 6b = 30.50

The difference between the 2 totals spent is $5, and there were the same number of burgers, but 2 fewer hotdogs. So $5/2 = $2.50, the cost of a hot dog. Substitute that into the equations to solve for burgers (b)

5(2.50) + 6b = 30.50
12.50 + 6b = 30.50
6b = 18
b = 3

Check the work:
7(2.50) + 6(3) =
17.50 + 18 = 35.50
8 0
2 years ago
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