Answer: a is equal to b
Step-by-step explanation:
Area of <span>trapezoid=(7+3)*h/2=20 cm2
10*h/2=20
5h=20
h=4
the answer is 4.0 cm</span>
Answer: 0.0475
Step-by-step explanation:
Given : A firm’s marketing manager believes that total sales X can be modeled using a normal distribution.
Where , Population mean : 
Standard deviation : 
To find : Probability that the firm’s sales will exceed $3 million i.e. $ 3,000,000.
∵ 
Then , for x= 3,000,000

Then , the probability that the firm’s sales will exceed $3 million is given by :-

Hence, the probability that the firm’s sales will exceed $3 million = 0.0475
The slope would be y = -1/2x + 3
The y intercept is where the line crosses the y axis which is at 3 and the slope is rise over run -2/4 or -1/2