What is 42 meters long and 39 meters wide

1,638 m^(2)

Step-by-step explanation:

We have to find the area of the floor in order to know how many square meters of flooring they need.

The area of the floor is:

42 m* (39 m)= 1,638 m^(2)

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5