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Zarrin [17]
3 years ago
6

200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B

, and 21 of blood group O. What is the probability that a randomly chosen student has either blood group A or blood group B? A) 0.25 B) 0.60 C) 0.70 D) 0.81
Mathematics
1 answer:
miss Akunina [59]3 years ago
4 0
C)0.70 becasue 140 is 70% of 200
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A history exam features five questions. Three of the questions are multiple-choice with four options each. The other two questio
nadezda [96]

There are total 500 ways in which Caroline can answer the exam.

Step-by-step explanation:

Here, the total number of questions in the test  = 5

The total number of multiple choice questions = 3

The total number of True/False question = 2

Let the numbers of the given question be 1,2 ,3,4, and 5.

Now, the total number of options available to answer question 1 = 5 options

Similarly,  number of options available to answer question 2 = 5 options

The number of options available to answer question 3 = 5 options

The number of options available to answer question 4 = 2 options ( T or F)

The number of options available to answer question 5 = 2 options ( T or F)

So, here the total available options to answer all 5 questions

= The total option available for  question ( 1 x 2 x 3 x 4 x 5)

= ( 5 ways  x 5 ways x 5 ways x 2 ways x 2 ways)

= 500 ways

Hence, there are total 500 ways in which Caroline can answer the exam.

8 0
3 years ago
Find the quotient and remainder of 52 divided by 8
jarptica [38.1K]
Well 52 divided by 8 is 6.2 so..
8 0
3 years ago
A taxi charges a flat fee of $5.00 plus $2.75 per mile. How much will it cost to travel 8.1 miles?
SIZIF [17.4K]

Answer:

27.275

Step-by-step explanation:

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6. Evaluate f(-1).
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Answer:

6. -f         7. f= 6/8

Step-by-step explanation:

Hope dis helps!!

4 0
3 years ago
A rectangular park is 18 miles long and 9 miles wide. How long is a pedestrian route that runs diagonally across the park?
horrorfan [7]
Well I did my math. I don't know if it's right. But I would say 13.5? This is proably wrong but..

Because;
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