Triangles def and d'e'f' are shown on the coordinate plane below:
d1
2 +e
se 1+
-8-7
75-4-3-2-1 1 1 2
3 4
5 6
7
8
d
what rotation was applied to triangle def to create triangle d'e'f'?
c 90° counterclockwise
90° clockwise
none of the above
180°

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)

9/10 divide by -3/15 as a mixed number

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.