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Pavlova-9 [17]
3 years ago
15

A dart is thrown upward with an initial velocity of 66 ft/s at an angle of elevation of 54°. Consider the position of the dart a

t any time t. Neglect air resistance. (Assume t is in seconds.) Find parametric equations that model the problem situation.
Mathematics
1 answer:
givi [52]3 years ago
4 0

Answer:

Answer to the question:

Step-by-step explanation:

α= 54º

V= 66 ft/s

g= 9.8 m/s²

Vx= V * cos(54º) = 38.8 ft/s

Vy= V * sin(54º) = 53.4 ft/s

<u>PARAMETRIC EQUATIONS:</u>

x(t)= Vx * t

y(t)= Vy * t - (g * t²)/2

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andrew-mc [135]

Answer:

x = -5

y = -5

Step-by-step explanation:

If you multiply the top equation by negative 2, you can add it to the bottom equation and cancel out the x:

-2(-x + 5y = -20) --> 2x - 10y = 40

Add this to the bottom equation top to bottom:

2x - 10y = 40

-2x + 4y = -10

You get:

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Then solve for y:

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Plug this back in for either equation and solve for x:

-x + 5(-5) = -20

-x -25 = -20

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x = -5

Your answers are:

x = -5

y = -5

7 0
3 years ago
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Problem #2
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The number of boys in a school is 2000 less than the number of girls .Then find the number of girls in the school,if the total n
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Answer:

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Step-by-step explanation:

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3 years ago
(3 pt) Marie has $830 in her bank account and withdraws $60 each month. Denise has $970 in her bank account and withdraws $80 ea
Lady bird [3.3K]
The answer is c because if you do 7x60 you'll get 420 and 830-420=410 and 7x80 you'll get 560 and 970-560 is also 410.
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3 years ago
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PLEASE HELP ME!!!! WORTH 10 POINTS!!!
Sidana [21]
<span>slope
m = (1  - 1)/(0 + 2) = 0

(x1, y1) as (-2, 1)

</span><span>point-slope form</span><span>
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y - 1 = 0(x + 2)
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