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natka813 [3]
2 years ago
12

Twice the difference of a number and two is five

Mathematics
1 answer:
dezoksy [38]2 years ago
6 0

Answer:

2 (n - 2) = 5

n = 4.5

Step-by-step explanation:

2 (n - 2) = 5

2n - 4 = 5

     +4.   +4

2n = 9

divide both sides by 2

n = 9/2 = 4.5

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A ball is launched straight up in the air from a height of 6 feet. Its velocity (feet/second) t seconds after launch is given by
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Step-by-step explanation:

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f(t) = -32 t+285

Height of the ball is :

h(t)=\int\limits{f(t){\cdot} dt}\\\\h(t)=\int\limits{(-32t+285){\cdot} dt}\\\\h(t)=-16t^2+285t+C

C is constant. Here the ball is launched from a height of 6 feet. So,

h(t)=-16t^2+285t+6

At t = 2 s, h(t)=-16(2)^2+285(2)+6=512\ m

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Between 2 s and 9 s, the ball's height changed is : 1275 - 512 = 763 m.

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3 years ago
In the figure below, F,G,H and J are collinear. FG, GK, and HK are lone segments of equivalent length, and the measure of JHK is
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Like this  :

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3 years ago
Please answer these questions!!!!!! Fast!!!!!!
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Answer:

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This means that if we hit an object with an energy E, the maximum energy that we can give to that object is E.

Then if we have a bat of mass M = 2kg, and velocity V = 30m/s

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K = (1950kg/2)*(10 m/s)^2 = 97,500 J.

d) Notice that in the equation of the kinetic energy we have the velocity squared, which means that the contribution of the velocity is larger than the contribution of the mass.

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