Answer:
coefficient of y is -3.
Step-by-step explanation:
You have to do pemdas method and combine all the like terms together
Answer:
496
Step-by-step explanation:
I am assuming that there are options lacking. The average score, due to the Law Of Big Numbers, using a big enough sample will be close to the mean of the random variable. Thus the mean of the average scores will be close to 496 if the process is done many times.
Area of that shape = Area of big rectangle - area of the two little triangles
A = 9 * (3.5 + 2 ) - 2*2/2 - 5*2/2
A = 9 * 5.5 - 2 - 5
A = 49.5 - 7
A = 42.5