Alex hangs each pair of pants and each shirt on a separate hanger. He has 51 hangers in his closet all holding clothes. Every time he buys 1 pair of pants he also buys 2 shirts. How many shirts does Alex own?​

Which of the following statement about pascal's triangle are true?

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

What is the number 321,000,000 in scientific notation? also what is the number? ?