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mote1985 [20]
3 years ago
8

Which of the following is true?

Mathematics
1 answer:
Dahasolnce [82]3 years ago
3 0

Answer:

the right ones are a c and d maybe

Step-by-step explanation:

these are probably wrong but I need my points so figure it out.

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In a shipment of 22 smartphones, 2 are defective. How many ways can a quality control inspector randomly test 4 smartphones, of
Eddi Din [679]

Answer:

Therefore the required ways are =190

Step-by-step explanation:

Combination: Combination is the number of selection of items from a collection of items where the order of selection does not matter.

Total number of smartphones =22

Defective phone = 2

Non defective phone = (22-2) =20

The control inspector randomly test 4 smartphones of which 2 are defective.

Non defective phone = 2

The ways to select 2 non defective phone is

^{20}C_2=\frac{20!}{2!(20-2)!} =\frac{20!}{2!18!}=\frac{19\times 20}{2} =190

The ways to select 2 defective phone is= ^2C_2=1

Therefore the required ways are = (190×1) =190

5 0
4 years ago
Please help me with this it is very complicated
kozerog [31]

Answer:

a) 35

b) 22

Step-by-step explanation:

a) The amount of numbers to the right of the vertical line is the amount of people. Count them up and you get 35.

b) The amount of numbers that are greater than 14.0 is the answer. There are 22 of those numbers.

4 0
3 years ago
Read 2 more answers
What is the formula of gradient
Nostrana [21]

Answer:

m= rise/run = y2-y1/x2-x1

8 0
3 years ago
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Four-thirds times the sum of a number and 8 is 24. What is the number?
schepotkina [342]

Answer:

D, 10.

Step-by-step explanation:

10+8=18 4/3x18=24

7 0
3 years ago
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Find the volume of a cylinder. Round your answer to the nearest tenth. Do not add a comma.
natali 33 [55]

Answer:

Step-by-step explanation:

Base -- find the radius

radius -- 67.8 (135.6^2 /2)

h=11.2

Volume = 2385.59

2385.60

5 0
3 years ago
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