Monday
September 22, 2014

Homework Help: math

Posted by sandy on Sunday, August 19, 2007 at 11:38pm.

2/3 over 10 equals 1.8/r solve for r.

(2/3)/10 = 1.8r.
First, invert and multiply the denominator; i.e.,10.
(2/3)*(1/10) = 1.8/r
2/30 = 1.8/r
Now cross multiply.
2r = 30*1.8
2r = 54
Now divide both sides by 2
2r/2 = 54/2
r = 27
check my thinking. check my work.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - how do you solve this type of math problems that indicates to perform the...
math[fractions] - how would u multiply two fractions ex. 2 2/3 times 3 5/6 First...
Math - Ok so I totally forgot how to find a common denominator when your adding ...
math,help - I need help with thisone solve: ((x)/(5x+10))+ ((x-3)/(x+2)) = (7)/(...
Math PLEASE HLP!!!! - use fraction bars to help: a) 11/12=w+y b)3/8=3/6-k c)1/4=...
Math - Which is True? A 3/5 > 1/2 B 1/2 < 4/9 C 5/11 > 1/2 D 1/2 > 5...
math ,hep, plz - can someone help explain this for me please... Problem #1 What ...
math,help - okay Directions: find the following squares. Problem: ((w)-(1)/(4))^...
Math - How do you divide fractions??? Cross multiply: For example, 4/5 divided ...
algebra - 2a+11=a+5 _____ 3 help 2a+11/3=a+5 is that the question? if it is 2a+...

Search
Members