Solve this one problem 1X13 and only this problem the problem that says 1x13 no other problem. 11111111111111111111111111111111111 111111+23333333333333333+0000000000 00999999999999999999999999999999=

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)