Answer:
The number of observations is 15.
Answer:
Step-by-step explanation:
4y - 2(5 - y + 4) = 4y - 2(9 - y)
= 4y + 9*(-2) - y *(-2)
= 4y - 18 + 2y {Combine like terms 4y and 2y}
= 6y - 18
6y - 18 = 6*y - 6*3
= 6(y - 3)
6y- 18 = 2 *3y - 2*9
= 2(3y -9)
2(3y - 9) and 6(y- 3 ) are equivalent to 4y - 2(5- y +4)
Others are not equivalent
PEMDAS
100 times 7 is 700
678 times 56 is 37968
700 +8 - 37968
-37260
If you use the distributive property on (x+y)/3, the result should be:
(x/3) + (y/3)
