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Margarita [4]
3 years ago
8

A box contains 23 transistors,6 of which are defective. If 6 are selected at random, find the probility that none are defective

?
Mathematics
1 answer:
ipn [44]3 years ago
3 0
|\Omega|=C(23,6)=\dfrac{23!}{6!17!}=100947\\
|A|=C(17,6)=\dfrac{17!}{6!11!}=12376\\\\
P(A)=\dfrac{12376}{100947}=\dfrac{1768}{14421}
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Martina runs 3/1/2 miles every day for 7 days . How many miles does she run altogether
jonny [76]

Answer:

24.5

Step-by-step explanation:

All you have to is Multiply 3 1/2 by 7

3 1/2 x 7= 24.5

5 0
2 years ago
Pencils come in packages of 10 . Erasers come in package of 12 . Phillip wants to purchase the smallest number of pencils and er
Maslowich

Answer: 60

Step-by-step explanation:

From the question, we are informed that pencils come in packages of 10 while erasers come in package of 12 .

We are further told that Phillip wants to purchase the smallest number of pencils and erasers so that he will have exactly 1 eraser per pencil, this simply means that we have to calculate the lowest common multiple for 10 and 12.

Multiples of 10 = 10, 20, 30, 40, 50, 60,

Multiples of 12 = 12, 24, 36, 48, 60, 72

Therefore, the packages of pencils and erasers that Phillip should buy will be 60

6 0
3 years ago
I WILL AWARD BRAINLIEST!!<br> Given: ∆ABC≅DEF<br> Find: BC, BA, m∠D
charle [14.2K]

Answer:

BC = 5

BA11

angle D = 27

Step-by-step explanation:

If the triangles are similar

ABC ≅ DEF

That means AB ≅ DE

BC ≅ EF

and CA ≅ FD

We want to find AB  so it is equal to DE  

BC = EF = 5

BA = AB = DE =11

We also know  the angles are equal

A = D

B = E

C = F

Angle A = angle D = 27


7 0
3 years ago
Read 2 more answers
Find the quotient.<br> 36s^3t-26st<br> -----------------<br> -2st<br> Enter the correct answer.
MrRa [10]

Answer:

it is makeing me do it

Step-by-step explanation:

4 0
3 years ago
The ratio of cake to cookies is 1:10. If there are 60 cookies, how many cakes are there?
sesenic [268]

Answer:

there are 6 cakes if there are 60 cookies

Step-by-step explanation:

1:10

60÷10=6

1:10 (multiply both sides by 6)

6:60 there are 6 cakes

3 0
3 years ago
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