Amina sees a discount of 5% on a laptop. she can calculate the amount she has to pay for the laptop using the expression where b is the price of the laptop before the discount. if the price after discount is $494, which number from the set {500, 505, 510, 520, 525} is the value of b?

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice