If one root of the quadratic equation ax2+bx+c=0 is the reciprocal of the other, then a=c​

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain