3 years ago

Smart phone sales since 1990

Mathematics

1 answer:

garri49 [273]3 years ago

5 0

Answer:

the last one is linear

the throwing a baseball in the air is quadratic

half life of a pesticide is exponential

thats all i know

Step-by-step explanation:

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When lines intersect in one place, what are they called?

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3 years ago

A fireworks display is launched from a platform 10 feet above ground with an initial upward velocity of 70 feet per second. The

Lena [83]

Answer: A. 87 feet

Step-by-step explanation:

1. You can find the t value of the vertex of the parabola as following:

$t=-\frac{b}{2a}$

2. Substitute values:

a=-16

b=70

Then:

$t=-\frac{70}{2(-16}$

$t=2.18$

3. Substitute the vaue obtained into the equation given in the problem. Therefore, you obtain the following result:

$h=-16t^{2}+70t+10\\h=-16(2.18)^{2}+70(2.18)+10\\h=86.56$

4. To the nearest foot:

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2 years ago