C(x) = 400 + 20x - 0.2x²
c(30) = 400 + 20(30) - 0.2(30)²
= 400 + 600 - 0.2(900)
= 1000 - 180
= 820
It costs $820 when 30 radios are produced.
Marginal cost is how much it would cost to make one MORE of the same product so now we find how much it costs to produce 31 radios and compare the two.
c(31) = 400 + 20(31) - 0.2(31)²
= 400 + 620 - 0.2(961)
= 1020 - 192.2
= 827.8 or ≈828.
Now we find the difference which means we subtract the two.
828 - 820 = 8.
Your marginal cost is $8.
To compare we can also do 29 radios.
c(29) = 400 + 20(29) - 0.2(29)² = 811.8 or ≈812
820 - 812 = 8.
Let the three digit dividend be abc ,
then abc = 40*Q+4
So, abc is "40 times Q (the quotient, a number) plus 4"
we try a few values of Q for which 40Q+4 is a 3 digit number:
for Q=2
40*2+4=80+4=84
for Q=3
40*3+4=120+4=124
Answer: 124
2 dozen = 24
24 cookies = 3 cups
24 x 2 = 48
48 cookies = 6 cups
24 x 3 = 72
72 cookies = 9
9 ~ 8
~
i think the anwser is b. 8
Answer:
b = 17.318 height = 23.318 ft
Step-by-step explanation:
This IS very similar to the other one, Emily..... Have you tried to solve it the same way?
b = 152 tan 6.5 = 17.318 ft (using a calculator)
add the height of the victim's head (6 ft)
17.318 + 6 = 23.318 ft
9514 1404 393
Answer:
207.24 in²
Step-by-step explanation:
The "r" in the formula stands for the radius of the cylinder. That is half the diameter, so is 3 in. The "h" in the formula stands for the cylinder height, shown as 8 in. Put these values in the formula and do the arithmetic.
SA = 2πr(r +h) = 2(3.14)(3 in)(3 in + 8 in) = 6.28(33 in²)
SA = 207.24 in²
