Answer:
its 9.33 reapetting or just 9.33
Step-by-step explanation:
$22.80
b.
$16.20
c.
$7.60
d.
$19.00
Answer:
a. $22.80
Step-by-step explanation:
Given :
Brand C washer uses about $0.65 per load
Brand D washer uses about $0.27 per load
Kevin averages about five loads of laundry per month.
To Find :how much more would the utility costs for a Brand C washer be than the utility costs for a Brand D washer after one year?
Solution :
The utility cost of Brand C washer per load = $0.65
Since she uses 5 loads per month
So, she uses loads in 12 months(=1year) = 5*12 =60 loads
Now cost of 60 loads is 60*0.65 = $39
Thus the utility cost of Brand C for 1 year is $39
The utility cost of Brand D washer per load = $0.27
Since she uses 5 loads per month
So, she uses loads in 12 months(=1year) = 5*12 =60 loads
Now cost of 60 loads is 60*0.27 = $16.2
Thus the utility cost of Brand D for 1 year is $16.2
The difference between their 1 year costs = $39-$16.2 = $22.8
Thus the utility costs for a Brand C washer will be $22.8 more than the utility costs for a Brand D washer.
Hence Option A is correct.
Answer:
The area function is
.
The domain and range of A is and .
Step-by-step explanation:
The given length of fencing is .
Let the length and width of each pen be and respectively as shown in the figure.
As there are 3 pens, so, the total area,
From the figure the total length of fencing is .
Here, for a significant area for the animals, as well as as and are the sides of ben.
From the given value:
Now, from equation (i)
This is the required area function in the terms of variable .
For the domain of area function, from equation (ii)
[as y>0]
So, the domain of area function is .
For the range of area function:
As or , then [from equation (i)]
Now, differentiate the area function with respect to .
Equate to zero to get the extremum point.
Check this point by double differentiation
As, , so, point is corresponding to maxima.
Put this value back to equation (iii) to get the maximum value of area function. We have
Hence, the range of area function is .
The area of each pen can be expressed as A(x) = x * (90 - 2x) / 3. The domain of this function is 0 < x < 45, and the range is 0 < A(x) < 300
In this problem, since Pam has to divide the petting zoo into three parts, we can consider the width of each pet pen to be x and the total length of the three pens to be (90 - 2x)/3, given that the total fence is 90m and we have two fences that are x meters long separating the pens. So, the area, A of each pen can be expressed as a function of x: A(x) = x * (90 - 2x) / 3. The domain of this function, or the possible values of x, would be all the values that make the area positive, which are 0 < x < 45. For the range of the function, we analyze the quadratic function which will have a maximum value at x = 15, as the area will be largest when the space is divided evenly, so the maximum area is A(15)= 15 * (60) / 3 = 300. Therefore, the range of the function is 0 < A(x) < 300.
#SPJ11
Answer:
-12
Step-by-step explanation:
We factor the numerator and try to simplify the fraction as much as we can.
Apply a^2 - b^2 formula (a+b)(a-b)
Cancel out x+6 from top and bottom
Plug in -6 for x
-6-6 = -12
swim 36 laps an hour. Determine the
percent change
Answer:
D
Step-by-step explanation:
If the percent change is 30 to 36 you can already see that it is an increase
here is the work
36 - 30
30
x 100% = 20%
Answer:
20% increase, which corresponds to the light
Step-by-step explanation:
(y - x)/x * 100
(36 - 30)/30 * 100
(6 * 100)/30
600/30
20% increase