March 13, 2014  Homework Help: 6th grade math  Posted by Alex on
Monday, October 14, 2013 at 6:16pm.  Can you check the following
problems, please?  1. If the ratios for microphones to karaoke
machines are all equivalent, how can you find the value of x?
microphones 3 9 15 36 karoke 1 3 x 12  Ans: x=5 (because divide
each ratio by 3)  2 There are 32 students in Mr. Santana's
class, but only 8 computers. What is the ratio of students to
computers in simplest form?  Ans: 32:8 = 32/8 = 4students to
1computer  3. Solve for x. 12/20 = x/15  20x = 180 x = 180/20 x
=9  Is there another way to solve the above problem?  4. A
Boeing 747 can carry up to 105 tons. What is the maximum weight
in pounds if one tone is equivalent to 2000 pounds?  210,000 lbs
5.45 is what percent of 90?  45/90 = x/100 90x= 45*100  6. Miss
John's favorite animal is the pig. If she collects 13 pig
figurines in 4 years, then how many will she collect in 12
years?  13/4yr = x/12yrs x=3*13 (or
4x=13*12,4x=156,x=156/4,x=39) x=39 pigs   Answer thi