Cindy made the sets of buttons below. make a new set for each number of buttons. use the greatest number of groups of 10 buttons and the least number of single buttons that you can. cindy set: 4 groups of 10 buttons and 25 single buttons . another se: __ groups of 10 buttons and __ single buttons

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.