The equation is I = PRT where I is the interest to, P is the principal, or money deposited, R is the rate in decimal form, and T is time in years.
I = (8,000)(0.05)(1)
I = $400
Add that to the original deposit and you have $8,400 as the account balance at the end of the first year
Answer:
20hours
Step-by-step explanation:
Jack can complete the painting in 30hours. The fraction he can paint per hour is thus 1/30
Trainee can complete the painting in 45hours, the fraction he can paint per hour is 1/45
If they are working together, the fraction that can paint in an hour is :
1/45 + 1/30 = 5/90 = 1/18
Now we know they can paint 1/18 of the room in an hour, the number of hours needed to completely paint the room is thus 1/1/18 = 18 hours
Rounding up answer to the nearest tenth is 20hours
Answer:
<h2>the lesser number is 72</h2>
Step-by-step explanation:
Let the consecutive numbers be 'x' and 'x+1'
according to the conditions of the question
the equation will be
5x + 3(x +1) = 579
= 5x + 3x +3 = 579
8x + 3 = 579
8x = 579 - 3
8x = 576
x = 576/8
x = 72
Answer: it will take 12 years for both trees to be of the same height.
Step-by-step explanation:
Let x represent the number of years that it will take for the blue spruce and the hemlock to be the same height.
A blue spruce grows an average of 6 inches per year. If a blue spruce is 4 feet tall,
1 inch = 0.0833 feet
6 inches = 6 × 0.0833 = 0.4998 feet
it means that its height in x years would be
0.4998x + 4
A hemlock grows an average of 4 inches per year. If a hemlock is 6 feet tall.
4 inches = 4 × 0.0833 = 0.3332 feet
it means that its height in x years would be
0.3332x + 6
The number of years that it will take both trees to be of same height is
0.4998x + 4 = 0.3332x + 6
0.4998x - 0.3332x = 6 - 4
0.1666x = 2
x = 2/0.1666
x = 12