What is 2 1/3 multiplied by 5 1/3 as a mixed number or fraction

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Given the equation y − 4 = three fourths(x + 8) in point-slope form, identify the equation of the same line in standard form. −three fourthsx + y = 10 3x − 4y = −40 y = three fourthsx + 12 y = three fourthsx + 10

Can someone tell me if this is perpendicular? !