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QveST [7]
3 years ago
8

A bag contains 40 red and green marbles. The ratio of red marbles to

Mathematics
2 answers:
Hunter-Best [27]3 years ago
5 0

Answer:

39/40

Step-by-step explanation:

Since 39 out of 40 marbles are green, the probability of randomly choosing green is 39/40.

However, the probability becomes 100% when you look into the bag and choose a green marble. (Unless you are blind or unable to distinguish blue from green, in which case the probability remains 39/40.)

Scilla [17]3 years ago
3 0
The answer is A or 10
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Please solve fast. Q.No. 26 and 29.<br>26. x²+5x+25/4<br>27. x²/4y²-2/3+4y²/9x²​
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Step-by-step explanation:

26. x²+5x+25/4 = (x + 5/2)²

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4 years ago
Which states the main argument of the essay?
tatuchka [14]

Answer:

d

Step-by-step explanation:

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3 years ago
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The blades of a windmill turn on an axis that is 40 feet from the ground. The blades are 15 feet long and complete 3 rotations e
astraxan [27]

Answer:

a is the _amplitude_(Length of the blades)_

The vertical shift, k, is the _Mill shaft height_

a = 15\ ft\\\\k = 40\ ft

y = 15sin(\frac{\pi}{10}t) + 40

Step-by-step explanation:

In this problem the amplitude of the sinusoidal function is given by the length of the blades.

a = 15\ ft

The mill is 40 feet above the ground, therefore the function must be displaced 40 units up on the y axis. So:

k = 40\ ft

We know that the blades have an angular velocity w = 3 rotations per minute.

One rotation = 2\pi

1 minute = 60 sec.

So:

w = \frac{3(2\pi)}{60}\ rad/s

w = \frac{\pi}{10}\ rad/s

Finally:

a is the _amplitude_(Length of the blades)_

The vertical shift, k, is the _Mill shaft height_

a = 15\ ft\\\\k = 40\ ft

y = 15sin(\frac{\pi}{10}t) + 40

3 0
4 years ago
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