2 months ago

Write each statement as a proportion using colons. a. 4 is to 20 as 2 is to 10. b. 9 is to 27 as 2 is to 6.

2 answers:

5 0

To create proportions, one should consistently write them as they typically do. Many express proportions as 4/20 = 2/10, but using colons is clearer and maintains comparability in one line: 4:20::2:10; where:: acts as an equal sign and / denotes division.

Leona [12.6K]2 months ago

3 0

The answer can be noted as follows: 1. 4 is to 20 as 2 is to 10, or expressed as 4:20::2:10. 2. Similarly, 9 is to 27 as 2 is to 6, written as 9:27::2:6.

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No, the bat won't fit because 30 divided by 17 equals 1.765

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1 month ago

Read 2 more answers

A shipment of 20 similar laptop computers to a retail outlet contains 3 that are defective. If a school makes a random purchase

Svet_ta [12734]

Answer:

Step-by-step explanation:

The total count of laptops, N = 20

Defective laptops, n = 3

The school is purchasing 2 laptops

Case 1:

Both purchased laptops are non-defective

Probability of selecting 2 non-defective laptops

The count of non-defective laptops equals 20 - 3 = 17

Overall laptop count = 20

Probability, P = 17/20 = 0.85

Case 2:

One laptop is found defective

The probability of choosing 1 defective and 1 non-defective laptop

P' = 3/20 x 17/19 = 0.134

Case 3:

Both laptops are defective

Choosing 2 laptops from 3 = 3 C 2 = 3

Selecting 2 from 20 = 20 C 2 = 190

The probability of selecting two defective laptops equals 3 / 190 = 0.0158

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4 0

2 months ago