Part 1 Using the results from parts D through G, write an expression that represents the number of years elapsed between the disappearance of the
Greek city of Helike and the end of the US Civil War. Write the expression in terms of cand w. Then solve the expression to find out how many
years separate these two events.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.