Answer:
x=30
Step-by-step explanation:
(3x-10)+(2x-20)=180// 5x-30=180//5x=150//x=30
Answer:
36 ,36 30,2
Step-by-step explanation:
hope it's okay to you
Answer:
The revenue function
R(x) = - 2x² +490x +2500
Step-by-step explanation:
<u><em>Explanation:-</em></u>
The demand d for a company’s product at cost x is predicted by the function d(x) = 500 – 2x
The price p in dollars that the company can charge for the product is given by p(x) = x + 5
Revenue = price × demand
Revenue = p(x) × d(x)
Revenue = (x+5) ×(500-2x)
Revenue = x(500-2x)+5(500-2x)
Revenue = 500x - 2x² + 2500- 10x
Revenue = - 2x² +490x +2500
Answer: 6 3/16
Step-by-step explanation:
So the formula for calculating the area of a rectangle is length * width
With decimal form:
Length = 2.25 inches
width = 2.75 inches
2.25 * 2.75 = 6.1875 inches2
With fractional form:
2 1/4 = 9/4
2 3/4 = 11/4
9/4 * 11 / 4 = 99/16
99/16 = 6 3/16 inches2
Answer: 0.0944
Step-by-step explanation:
Given : Sample size of cars : n= 150, sample size is greater than 30 , so we use z-test.
Number of cars tested do have faulty catalytic converters =42
Then the proportion of cars have faulty catalytic converters :
Critical value of z for 99% confidence level :
Formula for Margin of error :
Hence, the required margin of error =