6a−3b=5b solve for a:b ratio please help me if I don't get this my mom won't let me go to my best friends house for a sleepover

Describe all the numbers that when rounded to the nearest thousand are 645,000

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:

5x−4≥12 or 12x+5≤−4 can you with this problem