What is the density of an object with a mass of 30g and a volume of 10mL

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%

The product of (7x-2) and (20-3x)/4. when x=4

In the figure, triangle aob and triangle boc form a linear pair ,find the measure of x