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Scilla [17]
3 years ago
7

31 is 20% of what number

Mathematics
2 answers:
andrezito [222]3 years ago
7 0
31 is 20% of 155 :3
zloy xaker [14]3 years ago
6 0
155 because that 20% is 1/5 of a number add 31 5 times or 31 times which is 155
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A water balloon slingshot launches its projectiles essentially from ground level at a speed of 25.5 m/s . (You can ignore air re
lozanna [386]
A) The longest horizontal distance is reached at 45 degrees angle. This is true for any projectile launch.

B) First, calculate fligth time (using the vertical motion) and then calculate the horizontal movement.

Flight time = 2* ascendent time

ascendent time => final vertical velocity, Vy, = 0

sin(45) = Voy / Vo => Voy = Vosin(45) = 25.5 m/s * (√2) / 2 = 18.03 m/s

Vy = Voy - gt = 0  => Voy = gt = t = Voy / g

Use g = 10 m/s^ (it is an aproximation, because the actual value is about 9.81 m/s^2 depending on the latitud)

t = 18.03 m/s / 10 m/s^2 = 1.83 s

This is the ascendant time going upward.

The flight time is 2*1.83 = 3.66 s

Horizontal motion

Horizontal velocity = Vx = constant = Vox = Vo*cos(45) = 18.03 m/s

Vx = x / t => x = Vx*t

Horizontal distance = xmax = 18.03m/s*3.66 s = 65.99 m

c) The time the ballon will be in the air was calculated in the part B, it is 18.03 s
5 0
3 years ago
What lowest terms 19/31
jonny [76]
The lowest terms for 19/31 would be 1
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22.6sin[39.0]= 21.78
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3 years ago
What is the answer???<br> P-6+2=-4+10
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Step-by-step explanation:

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