Show that the subspaces of r3 are precisely {0}, r3, all lines in r3 through the origin, and all planes in r3 through the origin.

Simplify 4 square root of 2 end root plus 7 square root of 2 end root minus 3 square root of 2 . (1 point) 2 square root of 8 8 square root of 2 8 square root of 6 6 square root of 8

What is the value of x in the following equation? -3x-2=2x+8

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?