Answer:
y = 1/4x
Step-by-step explanation:
y = amount of cubic feet = 15 cubic feet
x = time taken = 60 seconds
y = kx
Where,
k = constant of proportionality
y = kx
15 = k * 60
k = 15/60
k = 1/4
The equation
y = kx
Where
k = 1/4
Becomes,
y = 1/4x
Answer:
256
Step-by-step explanation:
256 is 16 squared.
225 is 15 and 289 is 17.
Answer:
80 students
Step-by-step explanation:
take 65 divide by 13, then x 5
Answer:
a <em>kite</em> or a <em>square</em>
Step-by-step explanation:
The fact that the diagonals are congruent is irrelevant, unless you also know something about where they cross each other.
A <em>kite</em> has perpendicular diagonals. If they happen to bisect each other, then the result is a <em>rhombus</em>. If the diagonals are congruent, then that rhombus is a <em>square</em>.
<em>Other ways to get there</em>
A pair of congruent diagonals that cross each other symmetrically will define a trapezoid. If they also bisect each other, the result is a rectangle. If the diagonals of that rectangle are perpendicular, then it is a <em>square</em>.
Y = -t ^ 2 + 300t - 16
We find the first derivative and calculate its roots.
We make the second derivative, and calculate the sign taken in it by the roots of the first derivative, and if:
f '' (a) <0 is a relative maximum
f '' (a)> 0 is a relative minimum
y '= - 2t + 300 = 0
-2t + 300 = 0
t = 300/2 = 150
y'' = - 2
y'' (150) = - 2 (is a relative maximum)
the highest point of the trajectory is reached for t = 150s.
The height for that time is
y = - (150) ^ 2 + 300 (150) - 16 = 67484
answer
67484
t = 150s.
