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Aleksandr [31]
3 years ago
5

In order to conduct a certain experiment, four students are randomly selected from a class of 20. how many different groups of f

our stdents are possible
Mathematics
1 answer:
chubhunter [2.5K]3 years ago
8 0
20x4=80 
i am assuming this is correct this is how i learned just take all numbers in equation and multiply by each other 
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The value of y varies directly with x, and y<br> Find y when x = 2.4.<br> 7.2 when x = 1.6.
Nady [450]
I believe it is corresponding to the value of x in type of situational problem.
5 0
3 years ago
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Detroit received 8 over 5 inches of snow in the morning. The city recorded of an 3 over 5inch of snow in the evening. What was t
xenn [34]

Answer:

11/5 inches

Step-by-step explanation:

total snowfall for the day = snowfall in morning + snowfall in evening

= 8 over 5 + 3 over 5 (all in inches)

= 8/5 + 3/5 (all in inches)

Since the denominators are the same (5), we can simply add the numerators up while keeping the denominator

(8/5 + 3/5) inches= (8+3)/5 inches = 11/5 inches = total snowfall for the day

7 0
2 years ago
How do I do the algebra problem 5(b-1)?
nirvana33 [79]

Answer:

5b-5

Step-by-step explanation:

When doing these kinds of problems you want to do dributive property which means you multiply whatever number is outside of the (), which is 5, and multiply that by b and 1.

when numbers are outside the () and right next to them without anything like +,-, or a division sign, it means to multiply.

4 0
3 years ago
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I need help with this,, will give brianliest and +15 points
Anit [1.1K]

Answer:

41x² - 27x + 27

Step-by-step explanation:

Perimeter of Rectangle:

= 2(20x²-12x+4) + 2(5x²-5x+15)

= 40x²-24x+8 + 10x²-10x+30

= 50x²-34x+38

Perimeter of Triangle:

= 6x²+6x+3x+3+3x²-2x+8

= 9x²+7x+11

Difference:

(50x²-9x²)+(-34x+7x)+(38-11)

= 41x² - 27x + 27

8 0
2 years ago
6 divided by 1/3<br> Use keep change flip
irga5000 [103]
The answer is 18 because you keep 6/1 Chang division to multiplication then flip 1/3 to 3/1 then solve it which again the answer is 18 ;)
6 0
3 years ago
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