2 years ago

10 + (a+9)... PLEASE HURRY!!!!!!I MY HOMEWORK IS DUE IN 10 MINUTES!!!!!

Mathematics

1 answer:

8090 [49]2 years ago

3 0

Answer:

10a+90

Step-by-step explanation:

you have to use distributre property to find this ( hope this helps )

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An arrow is shot vertically upward from a platform 19ft high at a rate of 163ft/sec. When will the arrow hit the ground? Use the

Triss [41]

Answer: 10.3 s

Step-by-step explanation:

Given

The height of the arrow is given by $h=-16t^2+v_ot+h_o$

At $t=0, h=19\ ft$ and $v_o=163\ ft/s$

When arrow hits ground, h becomes 0 i.e.

$\Rightarrow 0=-16t^2+163t+19\\\Rightarrow 16t^2-163t-19=0\\\\\Rightarrow t=\dfrac{163\pm \sqrt{(-163)^2+4(16)(19)}}{2(16)}\\\\\Rightarrow t=-0.115,10.30\ s$

Neglecting the negative value of t

So, the arrow hits the ground after 10.30 s

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3 years ago

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mote1985 [20]

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Step-by-step explanation:

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3 years ago

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rewona [7]

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makkiz [27]

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