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ki77a [65]
3 years ago
15

A bag contains 20 marbles of the same size that are blue, green, and red. The probability of picking a blue marble is 20%. The p

robability of picking a green marble is 50%. Determine the probability of picking a red marble from the bag and then classify the probability of picking a red marble as likely or not likely to occur.
Mathematics
2 answers:
inn [45]3 years ago
7 0
The probability is 30% chance you will get a red marble
kaheart [24]3 years ago
3 0
The probability of picking up a red marble is 30%
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vagabundo [1.1K]

Answer:

B. It's actually something like 2.142857143... but you know, the closest answer is 2.14.

7 0
3 years ago
Solve the exponential equation for x. 256=(1/4)^3r+2
Vitek1552 [10]

Answer:

4^4= 4^-1(3r+2)

4^4= 4^(-3r-2)

-3r-2 = 4

-3r= 6

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Step-by-step explanation:


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3 years ago
-4x+y=9<br><br> 4x+9y=17 help me♥️!!!
jekas [21]

Answer:

-8/5, 13/5

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3 0
2 years ago
Read 2 more answers
a port and a radar station are 2 mi apart on a straight shore running east and west. a ship leaves the port at noon traveling no
Rom4ik [11]

Answer:

The rate of change of the tracking angle is 0.05599 rad/sec

Step-by-step explanation:

Here the ship is traveling at 15 mi/hr north east and

Port to Radar station = 2 miles

Distance traveled by the ship in 30 minutes = 0.5 * 15 = 7.5 miles

Therefore the ship, port and radar makes a triangle with sides

2, 7.5 and x

The value of x is gotten from cosine rule as follows

x² = 2² + 7.5² - 2*2*7.5*cos(45) = 39.04

x = 6.25 miles

By sine rule we have

\frac{sin A}{a} = \frac{sin B}{b}

Therefore,

\frac{sin 45}{6.25} = \frac{sin \alpha }{7.5}

α = Angle between radar and ship α

∴ α = 58.052

Where we put

\frac{sin 45}{6.25} = \frac{sin \alpha }{x} to get

\frac{x}{6.25} = \frac{sin \alpha }{sin 45} and differentiate to get

\frac{\frac{dx}{dt} }{6.25} = cos\alpha\frac{\frac{d\alpha }{dt}  }{sin 45}

\frac{15sin45 }{6.25cos\alpha } =\frac{d\alpha }{dt}  }= 3.208 degrees/second = 0.05599 rad/sec.

6 0
3 years ago
I would like some help
Anettt [7]

Answer:

D

Step-by-step explanation:

5 0
2 years ago
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