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ElenaW [278]
3 years ago
10

URGENT! When we solve (cos²x - 1 = 0) by adding and taking the square root, how come we get the same answer when we factor (cos²

x - 1) and use the zero product property to find the solution?
Mathematics
1 answer:
boyakko [2]3 years ago
4 0

Answer:

56

Step-by-step explanation:

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A quadratic function's graph being wide or narrow is determined or depended on a-term:

\large{y = a {x}^{2}  + bx + c}

If |a| has a lot of value, for example a = 2 or a = 100. The graph will get narrower if increasing the value of |a|. On the other hand, If |a| has small value, for example a = 1/2 or a = 1/10000. The graph would be wide.

Also it does not matter if a-term is negative or not since a-term being positive or negative determines if a parabola is upward or downward. Only |a| determines how narrow/wide the graph is.

From the question, it is clear that the parabola y = 2x^2 is the narrowest graph since it has the highest |a| value out of all choices.

Answer

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The answer is 42! hope this helps!
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4 years ago
An electrician charges Mr. Speer $300 before sales tax, for wiring his home. (a) What is the amount of sales tax that Mr. Speer
PilotLPTM [1.2K]

Answer: See explanation

Step-by-step explanation:

Your question isn't complete as you didn't give the sales tax percent. In order to solve the question, let's assume that the sales tax is 6%.

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This will be:

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(b) What is the total amount Mr. Speer has to pay?.

The total amount will be the addition of the amount charged and the sales tax. This will be:

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3 years ago
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liubo4ka [24]
<span>log (M/N) = log M - log N
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Confirm f(x)=3x^4 -48 has the zeros -2, 2, -2i, 2
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Step-by-step explanation:

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