A Parallelogram must be a rectangle when it's •A.) Diagnols are perpendicular •B. Diagnols are congruent •C. opposite sides are parallel •D. opposite sides are congruent

Find the difference of 1/2-3/11

Solve by elimination: -6x+3y=-4 -20x+10y=20 i know the answer is no solution, but i need to know why.

How do you write the standard number 0.000041 in scientific notation?

A spinner is divided into eight equal sections. five sections are red and three are green. if the spinner is spun three times, what is the probability that it lands on red exactly twice.

Solve the equation 8x-12=5+15

The sum of a number and twice its reciprocal is 27/5. Find the number.

Airbus is a major manufacturer of aircraft in Europe. Each of their A330 planes costs around 40 million dollars and Airbus' revenue (money coming in) can be modeled as a function of the number of aircraft it sells.

Which function has an inverse that is a function? A. b (x) = x^2+3 B. d (x) = -9 C. - 7x D. p (x) = lxl

Is 6.013 less than 6.08

What is nine 91, 284 rounded to hundred thousand