The reciprocal of -1/3 is -3/1
and the reciprocal of 4/1 is 1/4
The projectile's horizontal and vertical positions at time
are given by


where
. Solve
for the time
it takes for the projectile to reach the ground:

In this time, the projectile will have traveled horizontally a distance of

The projectile's horizontal and vertical velocities are given by


At the time the projectile hits the ground, its velocity vector has horizontal component approx. 176.77 m/s and vertical component approx. -178.43 m/s, which corresponds to a speed of about
.
Answer:
θ ≈ 17.1°
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan θ =
=
=
, then
θ =
(
) ≈ 17.1° ( to the nearest tenth )
X-intercept is (-6, 0) , (3, 0)
Answer:
p=number of seashells pierre collected
p+3p=52
4p=52
p=13
13 seashells