Positive 4 is the answer! Hope this helps!
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Answer:
x = -8.
Step-by-step explanation:
Now combine the x terms. We get x - 3y = 136 and 18x + 3y = -288.
Combining these two equations eliminates the y terms, leaving us with:
19x = -152. Solving for x, we get: x = -8. This corresponds to the second answer choice.
Answer:First one which is the question mark on screamers is 4 and the second one which is the question mark under runners is 15
Start with #47. To find the critical values, you must differentiate this function. x times (4-x)^3 is a product, so use the product rule. The derivative comes out to f '(x) = x*3*(4-x)^2*(-1) + (4-x)^3*1 = (4-x)^2 [-3x + 4-x]
Factoring this, f '(x) = (4-x)^2 [-3x+4-x]
Set this derivative equal to zero (0) and solve for the "critical values," which are the roots of f '(x) = (4-x)^2 [-3x+4-x]. (4-x)^2=0 produces the "cv" x=4.
[-3x+ (4-x)] = 0 produces the "cv" x=1. Thus, the "cv" are {4,1}.
Evaluate the given function at x: {4,1}. For example, if x=1, f(1)=(1)(4-1)^3, or 2^3, or 8. Thus, one of the extreme values is (1,8).
