How do you write 4000000+3000+50+2 in standard form?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is: