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DENIUS [597]
3 years ago
8

Prove that 3 + 2√5 is irrational

Mathematics
1 answer:
netineya [11]3 years ago
7 0

Answer:

A rational number is any integer, fraction, terminating decimal, or repeating decimal. The square root is not rational.

<em>good luck, i hope this helps :)</em>

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Step-by-step explanation:

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3 years ago
(4 pts) If a rock is thrown vertically upward from the surface of Mars with an initial velocity of 15m/sec
Yuliya22 [10]

Answer:

Step-by-step explanation:

I see you're in college math, so we'll solve this with calculus, since it's the easiest way anyway.

The position equation is

s(t)=-1.86t^2+15t  That equation will give us the height of the rock at ANY TIME during its travels. I could find the height at 2 seconds by plugging in a 2 for t; I could find the height at 12 seconds by plugging in a 12 for t, etc.

The first derivative of position is velocity:

v(t) = -3.72t + 15 and you stated that the rock will be at its max height when the velocity is 0, so we plug in a 0 for v(t):

0 = -3.72t + 15 and solve for t:\

-15 = -3.72t so

t = 4.03 seconds. This is how long it takes to get to its max height. Knowing that, we can plug 4.03 seconds into the position equation to find the height at 4.03 seconds:

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Calculus is amazing. Much easier than most methods to solve problems like this.

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2 years ago
Help me with this helpppppppppppppp worth 20 points
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I think its 2/12 but not 100% sure
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3 years ago
Read 2 more answers
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