The formula for simple interest is:
Total = Principal(1+ Rate x time)
You are given:
Total = $100
Principal = $20
Rate = 4%
You are asked to find the time.
Replace everything known in the formula:
100 = 20(1 +0.04 x Time)
Now solve for Time:
Divide each side by 20:
5 = 1 + 0.04 x Time
Subtract 1 from each side:
4 = 0.04 x time
Divide each side by 0.04:
Time = 4 / 0.04
Time = 100 years.
29
-10
------
19
*3
--------
57 divided by 3 = 19
19
-10
------
9 + 2 = 11
11 - 7 = 4
Like this?
Answer:
edge of cube = root 13.5/6 = 1.5
volume of cube = (Edge of cube)^3= (1.5)^3 = 3.37500 m^3
Answer:

Step-by-step explanation:
Let x be the number of apples and y be the number of oranges Kayla buys.
She needs to buy an assortment of at least 15 apples and oranges, then

Apples cost $0.65 each, then x apples cost $0.65x
Oranges cost $0.78 each, then y oranges cost $0.78y.
She spends less than $20.00, so

Not that the number of apples and oranges must satisfy inequalities

so the following system of inequalities models this situation:

Answer:
Sigma is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase ∑ is used as an operator for summation. When used at the end of a letter-case word, the final form is used
Step-by-step explanation: