Step-by-step explanation:
f(x) = —x^2 – 3x
f(10)={-10}²-3×10=100-30=70
Step-by-step explanation:
For a geometric sequence,
1. The sequence is :
3, 13, 23, 33,...
It is not geometric. It is false
2. The sequence is :
5, -25, 125, -625
So, the sequence is geometric as the common ratio is same. It is true.
Answer:
9.2 feet. b.)
Step-by-step explanation:
This uses the Pythagorean Theorem
Do you notice that the ladder forms a right triangle with the building.
10 feet = hypotenuse length
4 feet = bottom leg length
x feet = height of building
so 10^2 = 4^2 + x^2
100 = 16 + x^2
84 = x^2
x = root(84) = 9.16515 feet about 9.2 feet
The answer will be:
C(150,4) = 20260275, since the order does not matter, combination method applies here
