Answer: 680
Step-by-step explanation:
When order doesn't matter,then the number of combinations of choosing r things out of n = 
Given: Total participants = 17
From these, a group of 3 participants is to be tested under a special condition.
Number of groups of 3 participants chosen = 

Hence, there are 680 groups of 3 participants can be chosen,.
If the two lengths are 7 and 3, then I believe the length of the hypotenuse would be approximately 7.62.
Parallel lines have the same slope
y - y1 = m(x - x1)
slope(m) = 2/4
(2,5)...x1 = 2 and y1 = 5
now we sub
y - 5 = 2/4(x - 2)
now if there is a typo and ur slope is 3/4....it would be :
y - 5 = 3/4(x - 2)
Triangle area is 1/2 bh
So 11.9 is about 12, 7.1 is about 7.
7x12 = about 84 sq, cm
Answer: I cant tell if that is a 626,634 or two numbers 626 and 634 so ill give both answers.
626,634 rounded to the nearest ten is 626,630.
626 rounded to the nearest ten is 630.
634 rounded to the nearest ten is 630.
Plz mark brainliest:)