Answer:
Step-by-step explanation:
The formula for projectile motion in this case where we're dealing the "American" measure of gravity in feet per second squared, is
where s(t) is the height of the object after a certain amount of time has gone by, v₀ is the initial vertical velocity (our unknown in this case), and h₀ is the initial height.
For us, the initial height is 0 because the ball started off on the ground. What we are being asked is what is v₀, when after 2 seconds have gone by and the ball is 94 feet in the air. 94 feet in the air is the position of the ball, s(t) after t seconds go by. What we are being asked to find then, is v₀ when s(2) = 94
which simplifies to
94 = -64 + 2v₀ and
158 = 2v₀ so
v₀ = 79 feet per second
X^2 - x - 6
Let's factorise. So we pick two numbers such that their product gives (-6) and
adding them up gives us (-1)
Our choice pick is -3 and 2
So we have: X^2 - 3x + 2x - 6 = 0
Factorimg we have X(X - 3) + 2( X - 3) = 0
So (X - 3) and (X + 2) are the solution to the equation.
Hence my answer is X - 3 and X + 2. None of the option applies.
Answer:
Quadratic
Step-by-step explanation:
Answer:
the number of faces of a cube
Step-by-step explanation:
For an edge length of s, the area of one face of a cube is s^2. The area of all six faces of the cube, the total surface area, is 6s^2. The number 6 represents the number of congruent faces of a cube.