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3 years ago

What are the disadvantages to solving a quadratic equation by factoring

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

3 0

Answer:

-factoring may not work; for instance, factoring will not find solutions that are not integers.

-very difficult to use on any quadratic that doesn't have extremely easy numbers. In most cases, factoring will only be simple if the answers are integers or commonly used fractions.

hope this helps :)

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Solve for x by using log. Rounded to hundredth. <br><br> <img src="https://tex.z-dn.net/?f=4%5E%7B2x-5%7D%20%3D6%5E%7B-x%2B1%7D"

wel

Answer: $x=1.91$

Step-by-step explanation:

Given the expression $4^{2x-5} =6^{-x+1}$ , apply logarithm to both sides. Then:

$log(4)^{2x-5} =log(6)^{-x+1}$

Remembert that according the the properties of logarithms:

$log(a)^n=nlog(a)$

Then:

$(2x-5)log(4)=(-x+1)log(6)$

Appy distributive property and solve for "x":

$2xlog(4)-5log(4)=-xlog(6)+log(6)\\2xlog(4)+xlog(6)=log(6)+5log(4)\\x(2log(4)+log(6))=log(6)+5log(4)\\\\x=\frac{log(6)+5log(4)}{2log(4)+log(6)}\\\\x=1.91$

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4 years ago

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In order to determine if living next to high-voltage power lines increases your chance of getting cancer, researchers selected s

DIA [1.3K]

Answer:

An observational study

Explanation:

observational studies are those a study where the researcher observes the effect of a defy factor, diagnostic test, treatment or other intervention without trying to change who is or isn't exposed to it. Cohort study and control studies are of two observational studies. These are the part of fundamental of epidemiological research. These are called observational studies because the investigators observe individuals without manipulation and intervention. These studies are an important category of study design. Well, design observational studies maybe the next best method to address these types of questions.

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3 years ago

Shawn has 4 times as many candies as Jason, who has a third as many candies as

liraira [26]

Ian has 48 candies. hope that helps!

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3 years ago

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I NEED HELP AHHHHH!!!!!!!!!!!

slega [8]

Answer: I think it's 4.5

Step-by-step explanation: 27÷6=4.5

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3 years ago

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What's the domain and range of y=-2x^2+5x-7

S_A_V [24]

Answer:

Domain: All real numbers Range: (-∞, -31/8]

Step-by-step explanation:

Since the parent function for this equasion is y=x^2, you know that the graph wil be parabolic in shape. All parabolic functions have a domain of all real numbers. Now when you rewrite the graph in vertex form, you will see that the top vertex is at y=-31/8, this is going to restrict the range to be (-∞, -31/8]. I have provided a graph using the app PhotoMath.

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3 years ago