Let's say that Robbie's age is represented by r and Sheila's age is represented by s. Since we know that r is greater than s, we can set up a difference equation of r - s = 12. We also know that r + s = 42. Now, we can simply add the two equations and get that 2r = 54, then finally that r = 54. Therefore, Robbie is 54 years old.
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Answer: Marginal cost = $46
The cost of production increases by about $46 when one additional unit is produced.
Step-by-step explanation:
Given : The cost to produce q items is
dollars.
![C(12)=1300+2(12)^2=1588\\\\ C(11)=1300+2(11)^2=1542](https://tex.z-dn.net/?f=C%2812%29%3D1300%2B2%2812%29%5E2%3D1588%5C%5C%5C%5C%20C%2811%29%3D1300%2B2%2811%29%5E2%3D1542)
The marginal cost of producing the 12th item= C(12)-C(11)
=1588-1542=46
Interpretation : It means , the cost of production increases by about $46 when one additional unit is produced.
Answer:
Dividing mixed numbers is very similar to multiplying mixed numbers. You just add one step—after changing the divisor into an improper fraction, you then find its reciprocal and multiply. ... First step: Write the whole number and the mixed number as improper fractions.
Step-by-step explanation:
Answer:
Probability that nbr1 is a boy is p1 = 6/10.
Probability that nbr2 is a boy, given 5 boys left is 5/9
Probability that nbr3 is a boy given 4 boys left is 4/8
Probability that nbr 4 is a boy given 3 boys left is 3/7
Step-by-step explanation:
so its 4%
Answer:
a. $25 + ($0.20 × 150) = $25 + $30 = $55
b. $145 ÷ $0.20 = 725 miles