3 years ago

Which polar coordinates represent the same point as (4, −π/2)

1 answer:

7 0

You can go full 2π rotate around counterclockwise so the angle wouldn't be negative.

So -π/2 + 2π = -π/2 + 4π/2 = 3π/2

So (4, 3π/2) is the same point as (4, -π/2)

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With no air resistance, the time, t, it takes an object to fall h feet, can be determined by the equation t = square root of h/4

34kurt

Answer:

10,000 ft

Step-by-step explanation:

We can solve the given relation for h:

$t=\dfrac{\sqrt{h}}{4}\\\\4t=\sqrt{h}\\\\h=16t^2$

Putting t=25 into this formula, we get ...

h = 16(25²) = 10,000

With no air resistance the object will take 25 seconds to fall from 10,000 feet.

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3 years ago

The equation 9(u – 2) + 1.5u = 8.25 models the total miles Michael traveled one afternoon while sledding, where u equals the num

Nina [5.8K]

Eliminating parentheses gives
10.5u -18 = 8.25
10.5u = 26.25
u = 2.5

The value of u is 2.5.

_____
What fun! Michael spent 2.5 hours walking up the hill for 0.5 hour of time sledding down.

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3 years ago

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mike& sue danced 3/4 of an hour with out stopping. this is 3/8 hour more than betty& ryan danced. how long more did bett

Sphinxa [80]

3/8 of an hour.
If you change 3/4 to 6/8 and then subtract, 6/8-3/8 you would get 3/8.

4 0

3 years ago

Wich equation best represents the relationship between x and y in the graph?

matrenka [14]

Answer:

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