Acb is an isosceles triangle. ðacb = 58°. which of the pairs shown could be the measures of the other two angles? a. ðabc = 91°, ðbac = 59°b. ðabc = 59°, ðbac = 71°c. ðabc = 61°, ðbac = 61°d. ðabc = 78°, ðbac = 42°

C. ∠ABC = 61°, ∠BAC = 61°

Step-by-step explanation:

The remaining two angles must be equal. C is the only choice showing equal angles.

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As a check, the angles must add to 180°, so you have ...

... 2∠A + 58° = 180°

... ∠A + 29° = 90° . . . . . . divide by 2

... ∠A = 61° = ∠B . . . . . . . matches choice C

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.