In a survey, students were asked how many social media accounts they have. The random variable represents the number of social media accounts X 1 2 3
P(x) 0.25, 0.35, 0.40

Find the mean

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Can someone me find the original price? the discount is 5% and the sale price is $68.40