If y varies jointly with p and q. When p = 3 and q = 3, y = 90, how do you find y when p = 7 and q = 5?
1 Answer
Oct 4, 2017
Explanation:
#"the initial statement is "yproppq#
#"to convert to an equation multiply by k the constant"#
#"of variation"#
#rArry=kpq#
#"to find k use the given condition"#
#"when "p=3" and "q=3,y=90#
#y=kpqrArrk=y/(pq)=90/(3xx3)=10#
#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=10pq)color(white)(2/2)|)))#
#"when "p=7" and "q=5#
#rArry=10xx7xx5=350#
