10x+4y=−2
5x−2y=2


Choose all answers that apply:
Choose all answers that apply:

(Choice A)
A
Multiply the bottom equation by 2, then subtract the bottom equation from the top equation.

(Choice B)
B
Multiply the top equation by 1/2, then add the equations.


(choice C)
Add the equations.

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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.

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?