Answer:
4⋅(a⋅2)
2⋅(4⋅a)
8a
Step-by-step explanation:
(4⋅a)⋅2
4⋅(a⋅2) This is the same by the associative property of multiplication
2⋅(4⋅a) This is the same by the associative property of multiplication and the communicative property of multiplication
4⋅2⋅a⋅2 This brings in an extra 2 so it is not the same.
8a 4*2 = 8 so this is the same
4⋅2+a⋅2 This is the not the same 8+2a is not the same as 8a
7 out of 9
this because 2 out of 9 tells us there are 9 marbles.Since the number of yellow ones is 2 the the probability of non- yellow ones is (4+3)÷9
what is the problem? it might help to see it
1/20
2(k-5)+3k=k+6
-3k. -3k
2(k-5)=-2k+6
/2. /2
k-5=-k+3
+k. +k
2k-5=3
+5. +5
2k=8
k=4
