Answer:
12 cm
Step-by-step explanation:
AB and DC are parallel to each other, so they are the same length. Set their lengths equal to each other and solve for x
4x = 7x - 9
4x - 7x = 7x - 7x -9
-3x = -9
-3x/-3 = -9/-3
x = 3
Now solve for AB.
AB = 4x
AB = 4(3)
AB = 12
The first one is one, because 16x and -16x cancel eachother out, the second one on the other hand is not because 2 negatives do not cancel each other, but instead, add together. the third one yes, because when you foil 4x2 times 4x2 = 16x4. the -8 x 4x2 and 8 x 4x2 cancel eachother out, leaving you with -8 x 8, which equals -64, thus 16x4 - 64. the 4th one yes, because 16x2 x x2 = 16x4, and 16 x 2 = 32, x -2 equals -64.the last one, no because while 4 x 4x4 IS 16x4, 4 x -8 is 32
Answer:
i say dependent. i may be wrong
7/26
Step-by-step explanation:
6/13 times 7/12 which is 42/156 which is 14/52 which is also 7/26
Answer:
6 9/26
Step-by-step explanation:
Answer:
I believe it is B. The student incorrectly divided each term by the greatest common factor.
Step-by-step explanation:
3 is the correct greatest common factor of 3x+6, but it wouldn't be 3(x+3). If the student correctly divided each term, it would be 3(x+2). I hope this helps!
