I need help with these please!! :)

1. 3(–7 +12) = 3 • (–7) + 3 • (12)
A. opposite of a sum property
B. distributive property
C. commutative property
D associative property

2. If m

Question

I need help with these please!! :)

1. 3(–7 +12) = 3 • (–7) + 3 • (12)
A.  opposite of a sum property
B.  distributive property
C.  commutative property
D  associative property

2.  If m<A= 35%  and m<B=45% then what is m<Z?
Angles A and B are congruent to angles X & Y.
A. 35% 
B.  100%
C.  45%
D.  80%

3. What is 8.17 × 10 6 written in standard form?
          6 is a exponet ^
A. 8,170,000 
B.  817,000
C.  0.0000817
D.  0.00000817

4.  What is the value of the expression |x + y| when x = –8 and y = –13?
A.  21
B.  -5
C.  -21
D.  5

Thanks!! :)

timaashorty · Answer

Im not so sure about 1 and 2 but for the rest I'm 100%

3. is A. 8,170,000
4. A. 21

calculusxy · Answer

1. This is distributive property because the three is being distributed among the numbers inside the parenthesis.

2. (What is the figure? Is it a triangle?)

anonymous · Answer

Thanks @timaashorty and @calculusxy it doesn't show a picture of anything.. :l

anonymous · Answer

|dw:1392329959819:dw|
@calculusxy

timaashorty · Answer

you're welcome