Answer:
-3+-2
Step-by-step explanation:
Answer:
Step-by-step explanation:
14x - y = -1
14x = y -1
14x +1 = y
Substitute into other problem:
3x + 2(14x +1) =13
3x + (28x + 2) = 13
31x + 2 = 13
31x = 11
x = 11/31
Answer:
115
Step-by-step explanation:
The angle of a straight line is 180°. so all you have to do is subtract 65 from 180 and get 115.
Answer:
The coefficient of x²y³ is 40.
Step-by-step explanation:
The binomial expansion is defined as
The expression is
Expand the binomial expansion.
Combination formula:
Therefore the coefficient of x²y³ is 40.