Answer:
Sarah
Step-by-step explanation:
Alice: 75%
Mary: 80%
Sarah: 85%
Ellen: 60%
Isn’t it supposed to be a minus sign? For it can be like w-2, w-2 ?
This is a combination of 20 studants, 6 to 6:
Answer: The coordinates of the vertex are : (-1,-2)
Step-by-step explanation: To find the x coordinate, we use the formula:
Xv = -b/2a = -6/(2.3) = -6/6 = -1
Replacing x by -1, we write:
y = 3. (-1)^2 + 6. (-1) +1 = 3 - 6 + 1 = -2