15 points!

which relationship describes angles 1 and 2?

select each correct answer.

a. vertical angles

b. supplementary angles

c. adjacent angles

d. complementary angles

B supplementary

C  adjacent

Step-by-step explanation:

Vertical angles are across from each other and are equal  False

Supplementary angles add to 180 degrees (if next to each other they form a straight line)  True

Adjacent angles are next to each other  True

Complementary angles add to 90 degrees (from a right angle)  False

the size of the resulting matrix is 1-by-3.

step-by-step explanation:

the size of the two matrices given are as follows:

no .of rows of matrix 1 = 1

no .of columns of matrix 1 = 3

no .of rows of matrix 1 = 3

no .of columns of matrix 1 = 3

to find the size of the resulting matrix without actually solving the multiplication of the matrix, this is what you do:

if resulting matrix = matrix 1 * matrix 2

no. of rows of the resulting matrix = number of rows of matrix 1

no. of columns of resulting matrix = number of columns of matrix 2

note: the order of the matrices matter!

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490