Answer:
Step-by-step explanation:
The surface area of a sphere (which the earth is considered to be) = 4 pi r^2
pi = 3.14
r = 6340
Area = 4 * 3.14 * 6340 * 6340 = 504856736 square km.
You should either round this to 505,000,000 or express a value in scientific notation.
5.05 * 10^8
Answer: Choice A. sin(A) = cos(B)
============================================================
Explanation:
The rule is that sin(A) = cos(B) if and only if A+B = 90.
Note how
- sin(A) = opposite/hypotenuse = BC/AB
- cos(B) = adjacent/hypotenuse = BC/AB
Since both result in the same fraction BC/AB, this helps us see why sin(A) = cos(B). Similarly, we can find that cos(A) = sin(B).
In the diagram below, the angles A and B are complementary, meaning they add to 90 degrees. So this trick only applies to right triangles.
The side lengths can be anything you want, as long as you're dealing with a right triangle.
Answer:
The expression x2y - 2xy - 24y can be factored by first factoring out a common factor of y.
<h2>
y(x-6)(x+4)<===Your Answer!!!!!!!!!!!!!!!!!!!!!!!</h2>
Answer:
3
Step-by-step explanation:
Take 2 as a common then divide by 2
6÷2 =3
Answer:
78
Step-by-step explanation:
2s^2 +4sh
(2*3^2)+(4*3*5)
2*9 + 60
18+60
78