Ellen purchased a dishwasher, which cost $315 before the 9.22% sales tax. She used the machine an average of 10 times per week for the next six years, at which point she replaced it. Each time she ran the dishwasher it cost her $0.09 for water and $0.13 for electricity. What was the lifetime cost of Ellen's dishwasher?
Answers
Cost of dishwasher : 315 before sales tax
sales tax : 9.22%
Total cost = 315 * 1.0922 = 344.043
Average of 10 uses per week for the next 6 years before replacing it.
There are 52 weeks in a year.
10 uses per week * 52 weeks per year * 6 years = 3120 average uses
cost for water = 0.09 ; cost for electricity = 0.13 ; total cost per use = 0.22
0.22 * 3120 = 686.40 cost of use
purchase cost = 344.043
cost of use = 686.40
lifetime cost 1,030.443
the correct answer is A. $1030.44
Related Questions
243 × 7 whats 243×7?
Select the correct answer.The elimination method is ideal for solving this system of equations. By which number must you multiply the second equation to eliminate they variable, and what is the solution for this system?x+3y= 422x - y = 14OA. Multiply the second equation by-3. The solution is x= 12, y=9.OB. Multiply the second equation by -2. The solution is x = 12, y=10.OC. Multiply the second equation by 2. The solution is x = 15, y = 9.OD. Multiply the second equation by 3. The solution is x = 12, y = 10.
What is 14.2% expressed as a decimal? (i think its 0.142)
According to the Fundamental Theorem of Algebra, how many roots exist for the polynomial function? f(x) = 8x7 – x5 + x3+6
A. 7/16
B. 1/4
C. 1/6
D. 4/24
Answers
The sum of fractions 3/8 and 1/16 is 7/16.
Option A is the correct answer.
We have,
The commondenominator of 3/8 and 1/16 is 16.
Converting the fractions to have a denominator of 16:
3/8 = 6/16 (by multiplying the numerator and denominator by 2)
And,
1/16 (already has the denominator of 16)
Now, add the fractions:
6/16 + 1/16
= 7/16
Therefore,
The sum of fractions 3/8 and 1/16 is 7/16.
Learn more about expressions here:
#SPJ6
3/8 = 6/16
3/8 + 1/16 = 6/16 + 1/16 = (6+1)/16 = 7/16
Answer: A) 7/16
Answers
Answer:
y - 4 = -8/7(x - 4)
Step-by-step explanation:
Point-Slope form: y - y₁ = m(x - x₁)
x₁ and y₁ would be the coordinates of the point (4,4).
m would be the slope -8/7.
Substituting these values:
y - 4 = -8/7(x - 4)
Answer:
B
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = - and (a, b) = (4, 4) , then
y - 4 = - (x - 4) → B
Answers
Answer:
fish tank is 14.87 ≈ 15 inches tall.
Step-by-step explanation:
Given : A rectangular fish tank contains 3,240 cubic inches of water. The dimensions of the base of the fish tank are 12 inches x 18 inches.
To find : How tall is the fish tank.
Solution : We have given that volume of fish tank = 3240 cubic inches.
Length of tank = 12 inches.
Width of tank = 18 inches .
Volume of rectangular tank = length * width * height
3240 = 12 * 18* height .
3240 = 216 * height.
On dividing both side by 216 and switching the sides .
Height = .
Height = 14.87 inches
Therefore, fish tank is 14.87 ≈ 15 inches tall.
3240 = 18 x 12 x H
3240 = 216 x H
H = 3240 / 216 = 15 inches
Answers
Answers
1/2x-2=4 (expand the brackets)
1/2x=6 (added 2 to both sides)
x= 6/(1/2)
x= 6*2
x=12
1/2(x-4) = 4
Multiply each side of the equation by 2 : (x- 4) = 8
Add 4 to each side of the equation: x = 12
A rocket is launched from the ground. The function h(t)= -4.9t^2 +180t models the height of a rocket launcher from the ground t seconds after it is launched. If all other factors remain the same, which of the following function models the height of a rocket above the ground after t seconds if it is launched from a platform 100 feet in the air? (1) h(t) = -4.9t^2 +280t (2) h(t) = -4.9t^2 +180t -100 (3) h(t) = -4.9t^2 +180t +100 (4) h(t) = -4.9t^2 +180 (t+100)