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ruslelena [56]
3 years ago
5

Sebastian has 50 marbles in a bag. 20% of the marbles are green. How many marbles are green?

Mathematics
2 answers:
Ede4ka [16]3 years ago
7 0

Answer: 10

Step-by-step explanation:

50 divided by 10 is 5

10%=5

20%=10

ehidna [41]3 years ago
6 0

Answer:

10 marbles are green

Step-by-step explanation:

Let me explain.

Using price×rate= amount

you do 50x20%= 10. This means that out of the 50 marbles

only 10 are green.

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There are three local factories that produce radios. Each radio produced at factory A is defective withprobability .02, each one
diamong [38]

Answer:

The probability is 0.02667

Step-by-step explanation:

Let's call D1 the event that the first radio is defective and D2 the event that the second radio is defective.

So, if we select both radios any factory, the probability P(D2/D1) that the second radio is defective given that the first one is defective is:

P(D2/D1) = P(D2∩D1)/P(D1)

Taking into account that 0.02 is the probability that a radio produced at factory A is defective, P(D2/D1) for factory A is:

P(D2/D1)_A=\frac{0.02*0.02}{0.02} =0.02

At the same way, if both radios are from factory B, the probability P(D2/D1) that the second radio is defective given that the first one is defective is:

P(D2/D1)_B=\frac{0.01*0.01}{0.01} =0.01

Finally, if both radios are from factory C, the probability P(D2/D1) that the second radio is defective given that the first one is defective is:

P(D2/D1)_C=\frac{0.05*0.05}{0.05} =0.05

So, if the radios are equally likely to have been any factory, the probability to select both radios from any of the factories A, B or C are respectively:

P(A)=1/3

P(B)=1/3

P(C)=1/3

Then, the probability P(D2/D1) that the second radio is defective given that the first one is defective is:

P(D2/D1)=P(A)P(D2/D1)_A+P(B)P(D2/D1)_B+P(C)P(D2/D1)_C

P(D2/D1) = (1/3)*(0.02) + (1/3)*(0.01) + (1/3)*(0.05)

P(D2/D1) = 0.02667

6 0
3 years ago
Is the given point interior, exterior, or on the circle (x + 2)2 + (y - 3)2 = 81? R(6, 3)
ElenaW [278]
Hello : 
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the </span> point D  is on the interior  if : RD <span>< 9
</span>the  point D  is on the exterior if :  RD > 9
 the  point D  is circumference of the circle if :RD = 9 
4 0
3 years ago
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Verdich [7]
195+137+124+88+62=$606
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6 0
3 years ago
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SWEET T HAS 2 ORANGE PICKS FOR EVERY 5 GREEN. IF THERE ARE 21 PICKS IN ALL, HOW MANY PICKS ARE ORANGE?
IrinaVladis [17]

Answer:

For 21 picks, there are 6 orange

Step-by-step explanation:

orange: green   : total

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If there are 21 picks, we need to divide by 7  to see how many times we need to multiply

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Multiply everything by 3

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6                 15           21

For 21 picks, there are 6 orange

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