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3 years ago

3(Ꮾ - f) -4 = 3f - 4

Mathematics

2 answers:

raketka [301]3 years ago

8 0

3(6-f)-4=3f-4

First is expand

18-3f-4=3f-4

Combine like terms

14-3f=3f-4

18-3f=3f

18=6f

f=3

dem82 [27]3 years ago

5 0

Answer:

Hope this helps :)

Step-by-step explanation:

f=1

3(6-f)-4=11

3f-4=-1

11=-1

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The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

The height $h(t)$ of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation $h(t) = 3 +90\cdot t -16\cdot t^{2}$ , where $t$ is time in seconds. After how many seconds will the ball be 84 feet above the ground.

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