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SCORPION-xisa [38]
3 years ago
10

What is the solution set of the equation below? |2x + 1| = 9

Mathematics
2 answers:
sergiy2304 [10]3 years ago
7 0

Answer:

Step-by-step explanation:

<em> </em>believe it is     x=4,-5    but i could be wrong lmk

barxatty [35]3 years ago
5 0
Here is the answer, I hope this helped you.

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In this problem we have a pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. So the height, h, of the pumpkin at time t seconds after the launch can be modeled by the equation:

h(t) = -16t^2 + 84t + 20

So this is the equation of a parabola. The maximum of this parabola occurs at its vertex. So let's find this vertex:

\text{The x-value of the vertex is}: \\ \\ t=-\frac{b}{2a} \\ \\ \\ Where: \\ \\ a=-16 \\ \\ b=84 \\ \\ c=20 \\ \\ \\ t=-\frac{84}{2(-16)} \\ \\ t=-\frac{84}{-32} \\ \\ t=\frac{21}{8}=2.625 \\ \\ h(2.625)=-16(2.625)^2+84(2.625)+20 \\ \\ h(2.625)=-110.25+220.5+20 \\ \\ h(2.625)=130.25m

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