Toán lớp 8
giải bất phương trình: 2x + 2 > 4

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

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.