Freya thinks of a number, She multiplies the number by 2 and then subtracts 10
The result is 50
What number did Freya think of

Find the area of an equilateral triangle with a side of 6 inches

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Which best explains why this triangle is or is not a right triangle ?