To determine whether students at Bernal want to attend an art festival at the school, Manuel surveys all the students in the library at lunch. Biased or unbiased. Explain for brainlist, no links or report.

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.