Zhen and justin made two different
number patterns that each started
at 0. zhen wrote terms using the rule
"add 18." justin wrote terms using the
rule “add 6." what is the relationship
between the two patterns?

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.