Iam having a hard time with problems 34 & 37

Step-by-step explanation:

#34.

After a dilation of 2 (about the origin), all coordinates will be doubled.

Thus the image is 2 time the original matrix, or

-6 -4 -1

8   2 10

#37

a12 means the element on the first row, and the second element from the left.

The question does not indicate which matrix is named "a", but by elimination, we will assume it is the first matrix in the matrix equation.

Isolating the elements 12 (first row, second element) in the equation, we get

a12+5 = 1

which tells us that

a12=1-5 = -4

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet