Pls i give !
which is an example of the commutative property?
a.
–13 + 27 = 27 + (–13)
b.
–21 + (11 + 13) = (–21 + 11) + 13
c.
4(–3 + 5) = 4(–3) + 4 ∙ 5
d.
–(–8 + 3) = 8 + (–3)

To ? nd out how many students are unhappy with the dining hall food, you distribute a survey. which method of surveying would produce the least amount of bias in your data?

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

Reflect the point (7,0) across the y-axis