Answer:
is the .3 supposed to be there? if not then its ×=2.3
Steps to solve:
-12x - 2(x + 9) = 5(x + 4)
~Distribute
-12x - 2x - 18 = 5x + 20
~Combine like terms
-14x - 18 = 5x + 20
~Add 18 to both sides
-14x = 5x + 38
~Subtract 5x to both sides
-19x = 38
~Divide -19 to both sides
x = -2 (Option B)
Best of Luck!
Answer:
0.0882
Step-by-step explanation:
Given that:
Mean(m) = 281
Standard deviation (s) = 33
Probability of weight between 291 and 299 gram
Obtain the standardized score (Zscore):
P (X ≤ 291)
Zscore = (x - m) / s
Zscore = (291 - 281) / 33
Zscore = 10 / 33 = 0.303
P(Z ≤ 0.303) = 0.61906 (Z probability calculator)
P (X ≤ 299)
Zscore = (x - m) / s
Zscore = (299 - 281) / 33
Zscore = 18 / 33 = 0.5454
P(Z ≤ 0.5454) = 0.70726 (Z probability calculator)
Hence, probability of weight between 291 and 299 gram = 0.70726 - 0.61906 = 0.0882
![m(x)=-4x+11x^2+6x+14\\m(x)=11x^2+2x+14](https://tex.z-dn.net/?f=m%28x%29%3D-4x%2B11x%5E2%2B6x%2B14%5C%5Cm%28x%29%3D11x%5E2%2B2x%2B14)
Equating the equation to 0 and solving it
![11x^2+2x+14=0\\D=2^2-4*11*14=-612](https://tex.z-dn.net/?f=11x%5E2%2B2x%2B14%3D0%5C%5CD%3D2%5E2-4%2A11%2A14%3D-612%3C0)
This equation has no solution, so we can't find rational zeros
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P.S. Hello from Russia