We're doing math practice what's the answer
1 answer:
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Using compound interest, it is found that he must deposit $56,389.
Compound interest:
- A(t) is the amount of money after t years.
- P is the principal(the initial sum of money).
- r is the interest rate(as a decimal value).
- n is the number of times that interest is compounded per year.
- t is the time in years for which the money is invested or borrowed.
In this problem:
- Hopes to have $80,000 in 20 years, thus
.
- Interest rate of 1.75%, thus
.
- Compounding monthly, thus
- The investment is of P, for which we have to solve.
Then:
He must deposit $56,389.
A similar problem is given at brainly.com/question/25263233
Answer:
Average waste per day per person =1.51 pounds
Step-by-step explanation:
In 2010 do United States has a population of 309 million people. Also in the year 2010, do United States recycled 170,000 million pounds of waste.
We have to find the the average waste per person per day.
In a year there are 365 days.
In a day, the average amount of waste produced =
=
= 465.75 million pounds of waste
To find the average amount of waste produced per person per day, divide the average amount of waste produced per day by the total number of people in the country.
Average waste per day per person =
= 1.51 pounds
Answer:
35.9 grams
Step-by-step explanation:
We use the formula:
Where
q is heat released
m is mass
C_p is the constant 2.44
ΔT is change in temperature
We put the info in the formula and solve for m (mass):
The mass of ethanol is 35.9 grams