Two angles are complementary what is the measure of each angle if the larger is 10° more than the larger angle?

  40° and 50°

Step-by-step explanation:

Let "a" represent the larger angle. Then the smaller one is (a-10) and their sum is ...

  a + (a -10) = 90 . . . . . complementary angles sum to 90°

  2a = 100 . . . . . . . add 10, simplify

  a = 50

  (a-10) = 40

The two angles are 40° and 50°.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".