Given the equation Square root of 2x plus 1 = 3, solve for x and identify if it is an extraneous solution

Answers

Answer 1
To answer the question above, raise both sides of the equation to the power of two.
(sqrt (2x + 1))² = 3²
This will simplify into,
2x + 1 = 9
Solving for the value of x gives an answer of x = 4. This value is not an extraneous root as it satisfy the original equation even if it is inside the radical sign. (I hope this is right)
Answer 2
Use socratic. Hold up lemme find the answer

Related Questions

I accidentally clicked 4's answer (i dont know if it's right or not) so just forget that but do you guys know the answer to 4 and 5? I need to finish this assignment by today and I'm not good at this-

Answers

don’t open that link above me bc they’ll track your ip address

If my pay rate is $9 an hour and I worked 7 hours and 45 minutes. How much money did I make?

Answers

Answer:

$69.75

Step-by-step explanation:

$9 x 7 = $63

45 min/60 min = 0.75

$9 x 0.75 = $6.75

$63 + $6.75 = $69.75

Answer:

$69.75

Step-by-step explanation:

$9 x 7 hours = $63

$9 x 3/4 = $6.75

$63 + $6.75 = $69.75

I hope this helps :)

The intercepts of the line Y=-2x-21

Answers

Answer:

-21

Step-by-step explanation:

GIven data

We are given the equation of a line as

Y=-2x-21

let us compare this with the general equation of a line

y=mx+c

from the comparison, we can see that the intercept is -21

Therefore, the intercept is -21

Marco’s model bridge is 9 centimeters taller than Sho’s model bridge. If Sho’s bridge is 31 centimeters tall, which equation could be solved to find the height of Marco’s bridge?

Answers

Answer:

31-9

Step-by-step explanation:

hers is 31 so if marcos is 9 in taller you just subtract it to get the height of his

Which matches the inequality?

Answers

x > 3

(adding extra characters so its over 20)

Answer is below me. The other person

Solve |3x + 9| + 6 = 6 Question 4 options: A) x = –3 B) x = 3 or x = –3 C) No solutions D) x = 3

Answers

Answer:

A) x = -3

Step-by-step explanation:

|3(-3) + 9| = 0

|-9 + 9| = 0

|0| = 0

0 = 0

Answer:

A)x=−3

Step-by-step explanation:

Step 1: Add -6 to both sides.

|3x+9|+6+−6=6+−6

|3x+9|=0

Step 2: Solve Absolute Value.

|3x+9|=0

We know 3x+9=0

3x+9=0(Possibility 1)

3x+9−9=0−9(Subtract 9 from both sides)

3x=−9

3x /3 = −9 /3

(Divide both sides by 3)

x=−3

Write the quadratic equation in standard form:
2x – 1=-x^2

Answers

Answer: -x^2-2x-1

Step-by-step explanation:

There are 1420 students enrolled at Senn. If 60% of these students walk to school, how many students are walking to school?

I need an explanation also :)

Answers

Answer:

852 students walking to school

Step-by-step explanation:

Lets start with a simple example so you can get it

if 60% of 100 students walk to school that means

60 students walk to school... right??

so lets simplify it more that means you have multiplied 100 (students) by 60%

or [tex]\frac{60}{100}[/tex]  (note: you can say that 60% is equal to [tex]\frac{60}{100}[/tex] )

so the problem told 60% of 1420 students walk to school that means we should

do this:     [tex]1420*\frac{60}{100} = 852[/tex]

Answer:

852 walk to school

Step-by-step explanation:

i got this because i divided the 1420 into 10 which became a 142, multiply by 6 and you get 852

also you could

it is really simple also, all you have to do is multiply the number of student, S times the precent of students who walk, so s times w, which is 60 precent turend into .6 precent so 1420 x .6

the graph shows two lines,A and B
How many solutions are there for the pair of equations for all lines A and B? Explain your answer.

Answers

9514 1404 393

Answer:

  1

Step-by-step explanation:

A solution for the pair of equations is a point that is on both lines. The only point on this graph that is on both lines is the one point where the lines intersect. There is one solution.

A right triangle table top has legs that
measure 3.5 feet. What is the perimeter
of the table top?

Answers

Answer:

i

Step-by-step explanation:

Answer:

12 feet

Step-by-step explanation:

use the pythagorean theorem to figure out what the hypotenuse is

3.5^2+3.5^2=x^2

12.25+12.25=x^2

25=x^2

x=5

now that you know the hypotenuse, you can find the perimeter by adding up all the sides

3.5+3.5+5=12

If you failed your math test due to being unprepared. What are 2 things that you could have done to prevent being unprepared for your test?​

Answers

Answer:

go everything youve learnt from grade 3 come right up

Step-by-step explanation:

sometimes its knowing the simply formulas thatll get you through

Which of the following would make the equation false? 42 ≥ 6p

p = 7

p = 8

p = 6

p = 5

Answers

Answer:

this is true p=7

And this is false p=8

p=6

p=5

A store sells a package of 3 notebooks for $2. The point on the graph represents this ratio relationship. Which ordered pairs represent equivalent ratios that would also be on the graph? Choose all the correct answers. A (4, 6) B (6, 4) C (9, 6) D (12, 8) E (15, 9) F (16, 12)

Answers

Answer:

B, C, D

Step-by-step explanation:

Those are the equivalent ratios, look where the umbers are placed in the question to where they are placed in the ratio

someone please answer this!!

Answers

Answer:

x=8

Step-by-step explanation:

Need help please don’t scam it not cool

Answers

-5 is the answer. Have a good day.

Question 4 of 10
How much would $500 invested at 6% interest compounded monthly.be
worth after 5 years? Round your answer to the nearest cent.

Answers

Answer:

1800$

Step-by-step explanation:

(6% of 500 is 30)

(30 x 12 is 360)

(360 x 5 is 1800)

To visit his grandmother, Luis takes a train 6.376.376, point, 37 kilometers and a car 5.455.455, point, 45 kilometers.
How many kilometers is Luis's journey in total?

Answers

Answer:

Luis traveled 11.82 km in total.

Step-by-step explanation:

The statement should say: To visit his grandmother, Luis takes a train 6.37 kilometers and a car 5.45 kilometers. How many kilometers is Luis's journey in total?        

Hence, to find the total distance traveled by Luis we must add the distances of the train (6.37 km) and the car (5.45 km):

[tex] d = d_{t} + d_{c} = 6.37 km + 5.45 km = 11.82 km [/tex]

Therefore, Luis traveled 11.82 km in total.

I hope it helps you!  

PLEASE HELP ME WITH THE LITTLE QUESTION

Answers

Answer:

y = -x +2

Step-by-step explanation:

First let's find the slope.

(-1,3) and (4,-2)

3 - -2/ -1 - 4 = 5/-5 = -1

Slope = -1

Now let's use slope intercept form:

y1-y2=m(x1-x2)

Let's plug in our slope for m.

y1-y2= -1 (x1-x2)

And now let's substitute y2 and x2 for one of our points, I'll use (4,-2)

y1+2 = -1(x1- 4)

y= -x + 4 -2

y = -x +2

Peter lives in an apartment and pays the following expenses each month: electric bill, $34.80; TV streaming service,
$27.99; and rent, $614.85. Estimate his total expenses for the month by first rounding each value to the nearest tens
place.

Answers

Answer:

680

Step-by-step explanation:

add al you can add all of them and then my total came to 67 7.64 rounded to the nearest should be around 680

The total expenses for the month including electric bills, TV streaming service and rent is $677,6.

What is summation?

Summation is basically the result obtained by addition of all the numbers whose summation is to be obtained. The symbol used is ∑ for summation.

How to calculate total expenditure?

The expenditures done by Peter who lives in an apartment are:

Electric bill=$34.80

TV streaming service=$27.99

Rent=$614,85

Total expenditure incurred by Peter on electric bill, TV streaming service and rent =34.80+27.99+614.85

=$677.64

After rounding off we will get $677.6.

Hence the total expenses done by Peter on electric bill, tv streaming service, rent is $677.6.

Learn more about summation at https://brainly.com/question/542712

#SPJ2

Write the equation in standard form for the circle with center (0, – 8) and radius 10.

Answers

(x-0) squared + (y+8) squared =100 sorry i don’t know how to do the squared sign on my phone

Question 4(Multiple Choice Worth 3 points)
(06.06)
Which of the following shows 3+ (x + 6y) rewritten using the Associative Property of Addition?
O 3 + x + 6y
O 3x + (6 + y)
O x + (3 + 6y)
O (3 + x) + 6y
I need help ASAP

Answers

The last one can I get a crown?

Which values are the solutions to the inequality below? Check all that apply.
X^2 < 10

Answers

Answer:

3

Step-by-step explanation:

if you can't use calculator, you must know that after a number being square root, it MUST be in positive

for the negative answer will be false

so for the rest of the answer you need to try it

3² = 9 < 10 so it's true

4² =16 > 10 so it's false

the only answer is 3

If the diameter
of Earth is 7918
miles, what is the
distance from its
surface to its core,
in miles?

Answers

Answer:

3959

Step-by-step explanation:

Distance from surface to its core is 3,959 miles

Distance based problem:

Given that;

Diameter of earth = 7,918 miles

Find:

Distance from surface to its core

Computation:

Radius of earth = Distance from surface to its core

Distance from surface to its core = 7,918 / 2

Distance from surface to its core = 3,959 miles

Find out more about 'distance'.

https://brainly.com/question/26711747?referrer=searchResults

In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and the United Kingdom. They found that a substantially greater percentage of U.K. ads use humor. (a) Suppose that a random sample of 400 television ads in the United Kingdom reveals that 147 of these ads use humor. Find a point estimate of and a 95 percent confidence interval for the proportion of all U.K. television ads that use humor. (Round your answers to 3 decimal places.) (b) Suppose a random sample of 455 television ads in the United States reveals that 119 of these ads use humor. Find a point estimate of and a 95 percent confidence interval for the proportion of all U.S. television ads that use humor. (Round your answers to 3 decimal places.) (c) Do the confidence intervals you computed in parts a and b suggest that a greater percentage of U.K. ads use humor

Answers

Answer:

a)

The point estimate is 0.368.

The 95 percent confidence interval for the proportion of all U.K. television ads that use humor is (0.321, 0.415).

b)

The point estimate is 0.262.

The 95 percent confidence interval for the proportion of all U.S. television ads that use humor is (0.222, 0.302).

c)

Yes, because the lower bound of the confidence interval for UK proportions is higher than the upper bound of the confidence interval for US proportions.

Step-by-step explanation:

(a) Suppose that a random sample of 400 television ads in the United Kingdom reveals that 147 of these ads use humor.

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

Sample of 400:

This means that [tex]n = 400[/tex]

Point estimate:

[tex]\pi = \frac{147}{400} = 0.368[/tex]

The point estimate is 0.368.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.368 - 1.96\sqrt{\frac{0.368*0.632}{400}} = 0.321[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.368 + 1.96\sqrt{\frac{0.368*0.632}{400}} = 0.415[/tex]

The 95 percent confidence interval for the proportion of all U.K. television ads that use humor is (0.321, 0.415).

(b) Suppose a random sample of 455 television ads in the United States reveals that 119 of these ads use humor.

Sample of 455:

This means that [tex]n = 455[/tex]

Point estimate:

[tex]\pi = \frac{119}{455} = 0.262[/tex]

The point estimate is 0.262.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.262 + 1.96\sqrt{\frac{0.262*0.738}{455}} = 0.222[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.262 + 1.96\sqrt{\frac{0.262*0.738}{455}} = 0.302[/tex]

The 95 percent confidence interval for the proportion of all U.S. television ads that use humor is (0.222, 0.302).

(c) Do the confidence intervals you computed in parts a and b suggest that a greater percentage of U.K. ads use humor?

Yes, because the lower bound of the confidence interval for UK proportions is higher than the upper bound of the confidence interval for US proportions.

describe de manera clara y sencilla tres conceptos principales del tema anterior y explique su importancia​

Answers

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The graph shows a proportional relationship. Which equation matches the
graph?
A. y = 2
B. y = x
C. y = 4x
D. y = x

Answers

The answer is y = 2x

AKI-OLA publication annual income of 258,ooo
salaries Gh49,020
training Gh72,000
housing Gh60,000
entertainment Gh12,000
exigencies Gh23,020
(a) what percentage of the income is spent on salaries.
(b) what is the ratio of the amount for housing to the amount for training,

Answers

Answer:

(a) 19%

(b) 5:6

Step-by-step explanation:

Given: Gh 258,000

salaries Gh 49,020

training Gh 72,000

housing Gh 60,000

entertainment Gh 12,000

exigencies Gh 23,020

(a) Percentage of the income spent on salaries = [tex]\frac{amount of salaries}{total income}[/tex] x 100

                           = [tex]\frac{49020}{258000}[/tex] x 100

                           = 0.19 x 100%

                           = 19%

The percentage of the income spent on salaries is 19%.

(b) Ratio of amount for housing to amount for training = [tex]\frac{amount for housing}{amount for training}[/tex]

                                = [tex]\frac{60000}{72000}[/tex]

                                = [tex]\frac{5}{6}[/tex]

The ratio of the amount for housing to the amount for training is 5:6

Does the table represent a function? Why or why not?
Х
у
0
4
5
5
7
9
mm
2.
A. No, because two of the p-values are the same.
B. No, because one x-value corresponds to two different y-values.
C. Yes, because there is the same number of x-values as yuvalues.
D. Yes, because every x-value corresponds to exactly one y-value.

Answers

The Answer is b.....

Please help me I need help — thank you if you help me. :)

Answers

Answer:

57

Step-by-step explanation:

Jayden bought 4 cows for $325.00 each. He paid 1/3 down and paid the remainder the following week. How much did he owe?

Answers

Answer:

He paid $108.33 down and will owe $216.67

Step-by-step explanation:

:)

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