Britney lost $450 on investment which was 45% of the money she invested how much money did she invest ?

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

What is the absolute value of the complex number -4-sqrt2i