How many microseconds are in one second?

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

Let x = a + bi and y = c + di and z = f + gi. which statements are true?