Answer:
t = 3.1 seconds
Step-by-step explanation:
Set the equation h = -16t^2 + 40t + 30 equal to 0 (0 represents ground level).
Then h = -16t^2 + 40t + 30 = 0
Applying the quadratic formula with a = -16, b = 40 and c = 30,
-40 ± √( 1600 - 4[-16][30] )
t = -----------------------------------------
2(-16)
-40 ± √ 3520
t = -------------------------
-32
-40 - 59.33
Only the positive t value makes sense. It is t = ------------------
-32
t = 3.1 seconds
Answer:
Linear function
Explanation:
Given the scattered plot in the attached image.
We want to identify the type of function that can best model the given scattered plot.
The scattered point as shown in the attached image form a straight line, So, the best type of function that can best model it is a linear function (straight-line graph).
True, line x is parallel to line y, according to the diagram
A half a marathons answer is 69,217.52 feet
Answer:
Cos C = a/h
= 21/35
Step-by-step explanation:
since cos is equal to adjacent angle over hypotenuse angle, so from the question we conclude Cos C = 21/35
