How can you tell if a equation is extraneous

1 answer:

6 0

Do you mean an extraneous solution? I will tell you what I think. To tell if a solution is extraneous you need to go back to the original problem and check if there actually is a solution or if the solution is actually right. If not then it is extraneous.

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What is the answer to this equation? <br><br> 2 x(12 + 4) - 49 ?

Volgvan

<h2>Hey there!</h2><h2> $\bold{Distribute\downarrow}\\ \bold{2x(12) + 2x(4) -49}\\ \bold{2x(12)=24x}\\ \bold{2x(4) =8x}\\ \bold{24x+8x-49}\\\\\bold{Combine\ your\ like\ terms \downarrow}\\\bold{(24x + 8) + (-49)}\\\bold{24x+8=32x}\\\bold{-49 =-49}\\\\\\ \\ \boxed{\bold{Possible\ answer\ \#1: 32x - 49}}\checkmark$ </h2><h2 /><h2> $\bold{Do\ PEMDAS\ to\ solve\downarrow}\\\bold{2(12+4) -49}\\\bold{12+4=16}\\\bold{2(16)-49}\\\bold{2(16)=32}\\\bold{32-49=-17}\\ \\ \\ \\ \\ \boxed{\bold{Possible\ answer\ \#2: -17}}}\checkmark$ </h2><h2> $\bold{Note\downarrow}\\\bold{PEMDAS\ means......}\\\\\bold{Parentheses}\\\bold{Exponents} \\\bold{Multiplication}\\\bold{Division} \\\bold{Addition}\\\bold{Subtraction}$ </h2><h2>Good luck on your assignment and enjoy your day! </h2><h3>~ $\frak{LoveYourselfFirst:)}$ </h3>

4 0

2 years ago

What is the average rate of change of f(x) from x = -2 to x= 2?<br><br><br><br><br><br>

Serga [27]

Answer:

Below.

Step-by-step explanation:

The difference of the f(x) values divided by the difference in the corresponding x values.

That would be (f(2) - f(-2)) / (2 - (-2))

6 0

3 years ago

26. Earnings Suppose you have a job mowing lawns that pays $12 per hour. You

Llana [10]

Answer:

10 hrs to get 350

Step-by-step explanation:

7 0

2 years ago

What is the equation of a line with a slope of -1/2 and passes through the point (6,-6)

Vlad [161]

Well I am going to assume you need slope-intercept form. So the equation is y=mx+b. m is slope, b is y intercept. So you just plug it in -6= -1/2(6)+b. -6=-3+b. Now you figure out for b so what does b have to be to make the equation equal. Well -3 so -6=-3+-3, or -6=-6.

y=-1/2x-3

Hope that helped

3 0

2 years ago

Thomas invested $40,000. He put part of the money in an account paying 2% interest and the remainder

Rainbow [258]

Answer:

18,000 at 2%

22,000 at 3%

Step-by-step explanation:

x: the amount in account paying 2% interest

y: the amount in stock paying 3% interest

x + y = 40,000

2%. x + 3%. y = 1020

⇒ x = 18,000

y = 22,000

5 0

2 years ago