Andrew is showing his work in simplifying (-5.7+2.2)-1.1

step 1 (3.2-5.7)-1.1
step 2 2.2-(5.7+1.1)
step 3 2.2-(6.8)
step 4 -4.6

which statement is true

in step 1, andrew used the commutative property
in step 2, andrew used the distributive property
in step 3, andrew used the associative property
in step 4, andrew's answer is incorrect

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?