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xeze [42]
3 years ago
8

Of the 200 students who participated in a survey, 105 like pizza, 75 like tacos and 42 like both. If a random student is asked w

hat they prefer, what is the probability that they like either pizza OR tacos?
(A) 1.11
(B) 0.9
(C) 0.21
(D) 0.69
Mathematics
1 answer:
Gnom [1K]3 years ago
7 0
The answer is B) 0.9
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Element X decays radioactively with a half life of 6 minutes. If there are 790 grams of Element X, how long, to the nearest tent
frosja888 [35]

Answer:

It takes 27 minutes for the element to decay to 35 grams

Step-by-step explanation:

Given:

Initial amount  =  790 grams

Final amount =  35 grams

Half life =  6 minutes

To find:

Time taken for the element to reduce into 35 grams  = ?

Solutions

Time taken = half life  \times \frac{ log(\frac{ initial amount}{final amount})}{log(2)}

On substituting the values given, Time taken  

= 6 \times \frac{log(\frac{790}{35})}{log(2)}

= 6 \times \frac{log(22.57)}{log(2)}

= 6 \times 4.496

= 26.97

= 27 minutes

7 0
2 years ago
Common Core Sheets
kiruha [24]
144/145

Convert any mixed numbers to fractions
Then your initial equation becomes
48/5 divided by 29/3
5 0
2 years ago
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At a coffee shop, the first 100 customers' orders were as follows. What is the probability that a customer ordered a cold drink
mestny [16]

Answer:

Concept: Probability

  1. You have a dual probability such that they must order a large and then get the probability from there.
  2. So its x/probability of large
  3. If you would have provided the table it would have been clearer
3 0
2 years ago
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Please help me also explain your answer so I can get better at this thank you :)
Elina [12.6K]
Answer: 880

Explanation: 132/0.15 = 880 sry it wasnt thorough explanation i dont have time
6 0
2 years ago
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-0.75 is it rational or irrational
Mademuasel [1]

-0.75 is a rational number because it can be expressed as the fraction -3/4 and it is an integer

6 0
2 years ago
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