supremecheetah

Incorrect, the answer is 7.

Why is it 2*1/5*1/4 instead of 1/5*1/4 (which would make the answer 1/20).

Hello! $\frac{3}{7} \cdot \frac{5}{3} \cdot \frac{7}{11} = \frac{3\cdot5\cdot7}{7\cdot3\cdot11} = \frac{105}{231} = \frac{105\div21}{231\div21} = \boxed{\frac{5}{11}}$

Hello! The answer is $30.

We can form two equations with two variables based upon the given facts where x is the amount of money I have and y is the amount of money my brother has:

  x-5=y

-

  x+25=2y

---------------

    -30 = -y

Using system of equations, we find y = 30.

So your brother currently has 30 dollars.

Sorry, some of the LaTeX isn't rendered. Can you please post the question again?

Your answer is incorrect. Can you please try again?

Hello! Angle BCD = 80º, I'm working to make a solution soon.

Hello! Here's a solution: https://web2.0calc.com/questions/need-help-with-system_6. Let me know if this is incorrect.

Hello! The answer is simplfy 45-8, which equals 37.

Hello! I'm not sure if me or the other person is correct but I got 5 as my answer. 

20*h= 100

h = 100/20 = 5

To check the answer:

32+8=40/2=20*5=100

Therefore I think the answer is 5.