Atriangle-shaped machine part has sides of 2 1⁄2 inches, 3 1⁄4 inches, and 5 inches. the triangle's perimeter is

a. 101⁄8 inches.
b. 111⁄2 inches.
c. 103⁄4 inches.
d. 113⁄8 inches.

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

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.