Rubidium is in group 1, beneath potassium. Predict to hardness, electrical conductivity and Melting point. Please help. I will give you brainliest answer

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x