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Algebra
Pregunta

1. For the graph of $$y = - 27 ( x - 28 ) ^ { 2 } - 30$$ , what is the vertex?

2. Find the solution set of the following inequality in interval notation $$x ^ { 2 } + 5 x + 4 \leq 0$$

3. The quadratic function $$S ( t ) = - 16 t ^ { 2 } + 35 t + 12$$ models an object's height above the ground, $$S ( t )$$ , in feet, $$t$$ seconds after it has been thrown upwards. After how many seconds does the object reach its maximum height? Round the answer to the nearest hundredths. Don't forget units.

4. $$x$$ varies inversely as $$v ,$$ and $$x = 72$$ when $$v = 4$$ . Find $$x$$ when $$v = 32$$ .

1.

(28,-30)

2.

$$\in$$ [-4, -1]

3.

t = 35/32 = 1.09 seconds

4.

x= 9

Solución
View full explanation on CameraMath App.