<h3>
Answer: You have the correct answer. It's choice A. </h3>
Explanation:
You can verify this by plugging each root into the equation.
So for instance, plug in x = -2 and we get
f(x) = -3*(x+2)*(x-sqrt(3))*(x-4)
f(-2) = -3*(-2+2)*(-2-sqrt(3))*(-2-4)
f(-2) = -3*(0)*(-2-sqrt(3))*(-2-4)
f(-2) = 0
This verifies x = -2 is a root.
All that matters is that zero buried in there in the second to last step. Multiplying 0 by anything leads to 0. The other roots are verified in the same manner. The -3 out front is the leading coefficient.
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Extra info:
- Choice B is eliminated because (x+3) being a factor implies that x = -3 is a root. But this isn't listed in the instructions.
- Choice C is a similar story to choice B
- Choice D is eliminated since -sqrt(3) is not one of the listed roots, so (x+sqrt(3)) is not a factor.
Think of it like fractions. If the total of Emily's class is 40% or $580, put it into fractions. You know the total of everything is 100% and her class raised 40%. So write it as a fraction, 40 over 100. Then, write another fraction with 580 on the top, equivalent to 40%. Then you must cross multiply and divide. So multiply 100 times 580 and divide the product by 40 to get the equivalent of 100%. Therefore, the answer would be $1450. Make sense? Maybe this picture will help.
Answer:
So he could use 3 pounds for apples, and two for bananas.
Step-by-step explanation:
The answer is <span>4 times the 4th root of 5. You would take out a 16, and the fourth root of that is 2 so 2 x 2 = 4 which would be outside the fourth root of 5.
Hope this helps! :)</span>
I would say to round 48 to 50 and then multiply 50 x 3=150 or if you do 48x3=144 then estimate it to about 140