9514 1404 393
Answer:
f(-x) = x^2 -3x +9
Step-by-step explanation:
Use -x as the argument of the function.
f(-x) = (-x)^2 +3(-x) +9
f(-x) = x^2 -3x +9 . . . . . . . . simpify
Answer:
1ton
Step-by-step explanation:
Answer:25(20)+10(10)=600
X Y
Step-by-step explanation: sell 20 (X) Large candles and sell 10 (Y) small candles
Answer:
136.34 m to the nearest hundredth.
Step-by-step explanation:
The runners paths and the distance between them after 30 second form a triangle.
The side opposite the 85 degree angle is 180 m and one of the other sides is 130 m.
We need to find the third side.
We can use the Cosine Rule to do this:
If the third side is x m then:
180^2 = 130^2 + x^2 - 2*130x cos 85
180^2 = 130^2 + x^2 - 260 * x * 0.08716
180^2 = 130^2 + x^2 - 22.6616 x
x^2 - 22.6616 x - 15500 = 0
x = [22.6616 +/- sqrt ((-22.6616)^2 - 4 * -15500) ] / 2
x= 136.34 m.
