is the functions that determines the height of the ball in Feet, after x seconds being thrown.
so for example to calculate how many feet above the ground in the ball 5 seconds after being thrown, we calculate f(5)
feet
to solve our problem we need to find x such that f(x)=0
so we solve :
using the quadratic formula, le a=1, b=-7, c=-8
so
, which cannot be the solution to our problem.
Answer: 8 s
Let say that:
side one = A
side two = B
side three = C
And also, A+B+C = 80
Then, from that information we can get..
A=4B ; C=A-10... We can get the value of A, but we have to modified some equation.
Let, B=1/4 A.... (eq.1)
C=A-10.... (eq.2)
If we adding eq.1 and eq.2 we get:
B+C = 2A-39/4
Therefore,
A= 80 - (B+C)
A = 80 - 2A + 39/4
3A = 80 + 39/4
3A = 359/4 (Dividing both sides with 3)
A = 359/12 = 29.92
B = 1/4 A = 359/48 = 7.48
C = 359/12 - 10 = 19.92
The answer is B) 1/3.
There are 6 faces on a rectangular prism, each of which is a rectangle.
The area of the front and back is given by 25(8) = 200 sq. cm.
The area of the bottom and top is given by 25(4) = 100 sq. cm.
The area of the right and left is given by 4(8) = 32.
There are 2 faces out of 6 with an area that is not a multiple of 100; 2/6 = 1/3.
Answer:
Plane A will be farther because it is flying at a lower angle so it will be able to cover more ground by flying slightly more forwards than going more upwards like plane B
