Answer:
Cos A = x/z
Step-by-step explanation:
You need to memorize the definitions of all the trig functions and then these types of problems become easy! OK?
Cos = adjacent side/hypotenuse
Cos A = x/z
ANSWER
A reflection over the y-axis followed by a dilation by a factor greater than 1
EXPLANATION
We can see from the diagram that, square M and square P are all equal distance from the line y-axis.
This means that square M has been reflected in the y-axis.
Since square P is greater than square M, there has been a multiplication by a scale factor greater than 1.
The correct choice is B.
The answer is 6/9 or 2/3 because 2X2X2=8 and 9X9X9=729......it equals 8/729
Answer:
The rock remains in the air for t = 3.832 s
Step-by-step explanation:
To easily solve this equation, we can graph the equation with a calculator and see the interval for which the rock remains in the air.
(There is a minor problem with the equation, the last term should be 120 to model the 120 ft building)
h(t)= -16t^2 -30t + 120
Please see attached picture for the graph.
The time it takes for the ball to hit ground can be found by making
h(t) = -16t^2 -30t + 120 = 0
In the graph this point is equal to
t = 3.832 s
h(t) = 0