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murzikaleks [220]
3 years ago
5

I have 3 green cubes, 4 red cubes, 2 black cubes, and 6 yellow cubes. What is the probability that I will randomly choose a blac

k cube, put it back then randomly choose a yellow cube
Mathematics
1 answer:
Strike441 [17]3 years ago
6 0

Answer:

4/75 or 0.05333

Step-by-step explanation:

3+4+2+6=15 elements

2/15= probability to choose a black

6/15 = probability to choose a yellow cube

Probability to choose a black AND (*) a yellow = 2/15*6/15=12/225=4/75 or 0.05333

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In the computer lab, there are 14 Apple computers and 16 PC computers. Approximately what percent of the computers are PC?
Minchanka [31]

Answer:

53%

Step-by-step explanation:

In the computer lab, there are 14 Apple computers and 16 PC computers. There are total of 16+14 computers = 30 computers.

16/30 multiplied by 100

= 53% in approximation.

53% of the computers are PC, while the rest 47% are Apple's.

8 0
4 years ago
Read 2 more answers
Find the component of a velocity vector of an airplane that is traveling 150 mph at 45° below horizontal.
pashok25 [27]
First, you need to remember how to obtain the answer. 
1) (velocity)*(cosine of the angle)2)(velocity)*(sine of the angle)
Since the plane is traveling 45 degrees below the horizon the angle that we will be using is 180+45=225. 
Therefore we will have, 
150* cos(225) = -81.31
150*sin(225) = -81.31
*In the unit circle, the coordinates of 225 are -squareroot(2) divided by 2 for both sin and cos, which explains why we have the same answer for both sin and cos. 
The answer being negative makes sense since the speed is decreasing due to the fact that the plane is traveling below horizontal. 
5 0
4 years ago
Read 2 more answers
Write each of the following numbers to 3 significant figures in exponential or scientific notation. Write each number with only
Bezzdna [24]

Solution :

The significant figure of a number are defined as the positional notation of that number which are most reliable and are absolutely necessary to represent the quantity of something.

In the context, we have to express the given numbers into three significant figures in the form of scientific notation or in the exponential form :

(i). 5590    -----    $5.59 \times 10^3$

(ii).  0.000498   -----    $4.98 \times 10^{-4}$

(iii) 135000  -----   $1.35 \times 10^5$

(iv) 0.000438   -----  $4.38 \times 10^{-4}$

       

6 0
3 years ago
Which description defines the term APR?
lana66690 [7]

Answer:

APR means annual percentage rate so the correct answer is: It is the yearly rate of interest that you pay for credit card use

Step-by-step explanation:

7 0
3 years ago
Roberto will save 1/6 of his alowence each day. If he gets $2.00 a day, about how much money will he save each day? Round your a
Tresset [83]
2.00/6 = $0.33 rounded to the nearest penny, it actually is $0.333333333333 (infinite)

I hope this helped you out :)
5 0
3 years ago
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