Which statement is true, about the following two triangles?

a. △adc≅△acb, by the sss congruence postulate .
b. △adc≅△acb, by the sas congruence postulate .
c. △adc≅△cba, by the sss congruence postulate .
d. △adc≅△cba, by the sas congruence postulate .

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7