Периметр прямоугольника равен 50 см. Найдите длины сторон этого пря- моугольника, если известно, что они выражаются числами, кратными 5. Помогите

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

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?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.