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luda_lava [24]
3 years ago
13

If a new car is valued at $20,600 and 8 years later it is valued at $7000, then what is the average rate of change of its value

during those 8 years?
Mathematics
1 answer:
Olegator [25]3 years ago
4 0
The average rate would be 2.9 because 20,600 divided by 7000 is 2.9
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How many years will it take each situation to double its money? Situation A: Matthew invests $5,000 in an account with a compoun
algol [13]

Answer:

Matthew's money will double fastest in 6 years.

Step-by-step explanation:

<u><em>The complete question is</em></u>

Answer the question for each scenario<u><em> by applying the rule of 72</em></u>. How many years will it take each situation to double its money? Situation A: Matthew invests $5,000 in an account with a compound interest rate of 12%. Situation B: Morgan invests $2,500 in an account with a compound interest rate of 8%. Situation C: Maysen invests $10,000 in an account with a compound interest rate of 4.5%. Whose money will double fastest?

we know that

The <u><em>Rule of 72</em></u> is a simple way to determine how long an investment will take to double given a fixed annual rate of interest. By dividing 72 by the annual rate of return.

so

Situation A: Matthew invests $5,000 in an account with a compound interest rate of 12%

\frac{72}{12}=6\ years

Situation B: Morgan invests $2,500 in an account with a compound interest rate of 8%.

\frac{72}{8}=9\ years

Situation C: Maysen invests $10,000 in an account with a compound interest rate of 4.5%

\frac{72}{4.5}=16\ years

therefore

Matthew's money will double fastest in 6 years.

7 0
3 years ago
In a class, the ratio of girls to boys is 2:3. If there are 30 students in the class, what is the number of boys?
loris [4]
There would be 12 girls and 18 boys. Since the ratio is 2:3, there are 5 parts total (2+3=5) With 30 students, each part equals 6 students (30/5=6) Therefore the two parts that are girls would be 6 x 2, or 12 students, leaving the remainder of students, 18, to be boys
5 0
3 years ago
Read 2 more answers
"On a map, 0.25 inches represents 1 mile. What is the area of a rectangle on the map that is 3.75 inches long and 2.25 inches wi
Vika [28.1K]
0.25 inches represents 1 mile

----------------------------------------------
Find 1 inch:
----------------------------------------------
1 inch represents 1 ÷ 0.25 miles
1 inch represents 4 miles

----------------------------------------------
Find 3.75 inches:
----------------------------------------------
1 inch represents 4 miles
3.75 inches represent 4 x 3.75 miles
3.75 inches represent 15 miles

----------------------------------------------
Find 2.25 inches:
----------------------------------------------
1 inch represents 4 miles
2.25 inches represent 4 x 2.25 miles
2.25 inches represent 9 miles

----------------------------------------------
Find Area:
----------------------------------------------
Area = Length x Width
Area = 15 x 9 
Area = 135 miles²

----------------------------------------------
Answer: 135 miles²
----------------------------------------------
6 0
3 years ago
Read 2 more answers
Multiply. 9[ 8 −2 −1 ] Enter your answer in the boxes.
Lelu [443]
8 - 2 = 6
6 - 1 = 5

9 x 5 = 45
6 0
4 years ago
1/4 times 1/3 times a 1/2<br> volume of a rectangular prism
jeka57 [31]

Answer:

V≈0.041

Step-by-step explanation:

Right rectangular prism

Solve for volume

V≈0.041

l Length

0.25

w Width

0.33

h Height

0.5

5 0
3 years ago
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