Answer:
87.92
Step-by-step explanation:
you have your radius 14 inches to get the answer is
1: pie is 3.14
2: circumference is 2× 3.14×14
3: 3.14×14
4: 43.96 × 2
Answer:
Step-by-step explanation:
You want to leave a 15% tip on a meal that cost $48.
First, convert the 15% to an actual number that can be used in a calculation. For percents,this is always done by simply dividing the percent (in this case 15%) by 100%.So, the conversational term "15%" becomes 15% / 100% = 0.15 in terms of a real mathematical number.
Second, you need to find out what 15% of your $48 meal cost is.This is always done by multiplying 0.15 by $48.00, or
0.15 x $48.00=$7.20.
So, the amount of tip you are going to leave is $7.20.
This makes the total cost of your meal (to write on your charge slip or other payment)
$48.00 + $7.20 = $55.20.
i hope this may come to use to your rude a s s
Answer:
S'(x)=-0.006x2+0.8x+9
Step-by-step explanation:
The rate of change of the sales S(x) with respect to the amount of money spent on advertising x is then the derivative of S(x) with respect to x. What we have to calculate is S'(x).
We know that the derivative of 
is 
(where a is a constant), and the derivative of a sum is the sum of the derivatives, so we can calculate the derivative of each term independently:
S'(x)=(−0.002x3 + 0.4x2 + 9x + 500)'=(−0.002)(3)x2 + (0.4)(2)x + 9
Which means:
S'(x)=-0.006x2+0.8x+9
Step-by-step explanation:
4x + 2y = 10 --------(1)
2x + 3y = 33 -----------(2)
Multiply 2 with eq. (1) and 4 with eq. (2)
8x + 4y = 20 ____________(3)
8x + 12y = 132 ______(4)
Subtracting (3) from (4),
8x + 4y = 20
- 8x -12y = -132
----------------------
0 -8y = -112
y = 112/8
y = 4 is the answer.
Putting the vakue of y in eq. (2),
2x + 12 = 33
2x = 33-12
2x = 21
x = 21/2 is the answer.
Answer:
13x+8
Step-by-step explanation:
9(4x-3) -23x+35
36x-27-23x+35
13x+8
