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5/21

15 people play at least one sport

6+14=20 people combined

20-15=5 people do both

5/21

I also got the same answer as the people on that website, but it was also incorrect.

That answer was incorrect.

Thanks! Still confused though. Isn't there only one answer as you found the angles already?

I'm sorry, but 20 is incorrect.

This is what you have written.  Is it what you actually mean?

\(\dfrac{30\sqrt{5-4\cos\theta}\;-1}{5\cos\theta}\times 2\cos\theta =10\)

Suppose g is a linear function such that g(1.2) = 3.3 and g(-3) = 7.2. Find the equation for g. (Use x for the variable. Round equation parameters to two decimal places.)

7.2-3.3=3.9

-3- -1.2 = -1.8

gradient = 3.9/-1.8 = -13/6  = -2.1666666666666667  = -2.17

g(x)=mx+b

g(x)=-2.17x+b

(1.2, 3.3)

3.3= -2.17*1.2 +b

b=3.3 + (-13/6)*1.2 = 0.7

g(x)= -2.17x + 0.7

Thanks very much guest   

See Max Wong's solution #11 here:  https://web2.0calc.com/questions/help-plzzzz_3

I am reasonably sure I have seen Heureka do this before but I  cannot remember how   

Heueka, if you see this can you show us again, please?

Thanks for the answer, but I really want to know how to solve it.

Awesome! I learned something!

Jack's age = \(j\)

Jack's father's age = \(f\)

\(j+f=52\)

\(f=5j-2\)

Solve

All angles in a TRIANGLE add up to 180. What do you think angle ABC is used for?

I used to play roblox Phantom Forces with Calculater User long long ago when we were little.

I have the same fate as Cal. It turned my life for the better! Instead of playing video games to midnight, I make video games and do math until midnight!

How did you get that number?