Answer:
A
Step-by-step explanation:
Argument
C and D are wrong right off the top. When you have x + 2 in synthetic division the divisor (2) must change signs.
B is incorrect because you don't change the signs of the polynomial that is being divided into. So that only leaves A and it is correct.
Summary
- Change the sign of the binomial doing the dividing (2 goes to - 2)
- Leave the polynomial's coefficients alone.
The standard kinematics equation is for an object projected vertically is:
H(t)=H0+v0(t)+(1/2)at^2
H0=height at time 0
v0(t)=vertical velocity at time 0
a=acceleration [equals -g for gravity]
H(t) height of projectile at time t.
We're given
H0=2.5'
v0=45 '/s
a=-32.2 '/s^2
so the kinematics equation is
H(t)=2.5+45(t)+(1/2)(-32.2)t^2= 2.5+45t-16.1t^2
Solve for H(t)=5.5 using the quadratic formula:
H(t)=5.5= 2.5+45t-16.1t^2
t=0.0683 s [ on its way up ], or
t=2.727 s [caught on its way down]
Therefore the football was in the air for 2.727 seconds.
N=5
Multiply n by 1 to get n which equals 5.
Hope this Helps!!
Answer:
b
Step-by-step explanation: