Answer:
Step-by-step explanation:
Let's use the integral formula for the surface area of revolution of the function y(x) around the x-axis, which is:
and which in our case, we can obtain the following:
Recall as well that , which gives us the limits of integration:
If we compare it with the geometry formula:
Lateral surface of cone =
which is exactly the expression we calculated with the integral.
Answer:
x is less than 4
or
x is greater than 4
Step-by-step explanation:
-5x < -15x + 40 -5x < -15x + 40
+15x +15x -40 -40
10x < 40 -40 - 5x < -15x
÷10 ÷10 +5x +5x
× < 4 -40 < -10x
÷10 ÷10
4 < ×
Answer:
x = 13, z = 184
Step-by-step explanation:
(14x-94) = 88
14x = 182
x = 13
z = 360 - 88*2 = 360 - 176 = 184
Answer:
x = 4
Step-by-step explanation: 4 times 4 is 16 and 16 plus 7 is 23.