1/2 or .5
Because there is two tests happening and that is the denominator, and if the probability of only one working it was be 1/2
A. His answer is incorrect. 2 cubed is 2 X 2 X 2, which is 8. Add 4 and you have the answer of 12.
B. He may have multiplied 2 X 3 and then added 4, instead of multiplying 2 three times.
2/8, 2 Over 8 because all your doing is multiplying 1x2 and 4x2
You line up the numbers shown in the photo, then add each column
Step-by-step explanation:
hence the value of y=-9/4and k=-16.