1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hitman42 [59]
3 years ago
14

What is the solution of the equation? (√2x-1) + 2=x

Mathematics
1 answer:
Gwar [14]3 years ago
7 0

Answer:

x = 5

Step-by-step explanation:

√(2x − 1) + 2 = x

√(2x − 1) = x − 2

2x − 1 = (x − 2)²

2x − 1 = x² − 4x + 4

0 = x² − 6x + 5

0 = (x − 1) (x − 5)

x = 1 or 5

Check for extraneous solutions.

√(2(1) − 1) + 2 = 1

√(1) + 2 = 1

3 = 1

No solution

√(2(5) − 1) + 2 = 5

√(9) + 2 = 5

5 = 5

x = 5

You might be interested in
A band expects to put 15 songs on their next CD. The band writes and records ​60% more songs than they expect to put on the CD.
scoray [572]

Answer: 6

Step-by-step explanation:

From the question, we are informed that a band expects to put 15 songs on their next CD and that the band writes and records ​60% more songs than they expect to put on the CD. Therefore, the total songs will be:

= 15 + (60% × 15)

= 15 + (0.6 × 15)

= 15 + 9

= 24 songs.

During the editing​ process, ​75% of the songs are removed. The total number of songs that will be there on the final​ CD will be:

= 24 - (75% × 24)

= 24 - (0.75 × 24)

= 24 - 18

= 6

6 songs will be there on the final CD.

3 0
3 years ago
Read 2 more answers
SOMEONE HELP FAST THIS IS DUE SOON PLZ
nordsb [41]

Answer:

-27.5

Step-by-step explanation:

4 0
3 years ago
Mike withdrew $32 from his bank account. The transaction slip said his balance was $289.14. What was his previous balance?
Temka [501]
<span>His previous balance was $321.14
289.14 + 32 = 321.14

hope this helps
</span>
4 0
3 years ago
What are data sorted into before they are plot as a histogram
Olin [163]

Answer:

use google lol

use google lol

8 0
3 years ago
The mean number of children among a sample of 15 low-income households is 2.8. The mean number of children among a sample of 19
gtnhenbr [62]

Answer:

Step-by-step explanation:

Let's put the data as below:

n1=15    x1=2.8      s1=1.6       and s1²=2.56

n2=19   x2=2.4     s2=1.7        and s2²=2.89

alpha= 0.05

To test the hypothesis:

H0= There is no sufficient evidence that low income household have fewer children

H1=There is sufficient evidence that low income household have fewer children

Assume that population variances are equal.

the t-static for two samples,

t=\frac{x1-x2}{Sp\sqrt{\frac{1}{n1}-\frac{1}{n2} \\} } } ~t with min (n1-1,n2-1)df

The pooled variance estimate Sp equals:

Sp^{2}=\frac{(n1-1)s1^{2}+(n2-1)s2^{2}  }{n1+n2-2}

Sp²=2.7456

Sp=1.65699

Degrees of freedom=n1+n2-2=32

Under null hypothesis:

tcal=\frac{|2.8 - 2.4|}{1.6599\sqrt{\frac{1}{15}+\frac{1}{19}  } }

tcal=0.6989

The critical value ttab=2.0369 for alpha=0.05

So we reject our null hypothesis H0

So there is sufficient evidence that low income households have fewer children than high income households

6 0
3 years ago
Other questions:
  • Please please please
    14·2 answers
  • 60 cars to 24 cars what is the percent of change can you tell me answer and explain thanks
    12·1 answer
  • Which line segment is parallel to GE?<br><br> DH<br> KI<br> FG<br> HI
    13·2 answers
  • Sophia has read 75 pages in a 250-page book. What percent of the book has Sophia read?
    15·2 answers
  • Select the correct answer.
    6·1 answer
  • An elevator starts at the lobby and makes 44 stops. The positive numbers stand for going up, and the negative numbers stand for
    11·2 answers
  • The unit price of a 128 ounce jug of milk is 4.8 cents per ounce. A 64 ounce cartoon of milk has a unit price of 5.1 cents per o
    5·2 answers
  • The graph represents the fees in thousands of dollars, y, depending on the amount invested in millions, x, with one financial in
    12·2 answers
  • (10+12x)(15x+1) please help me
    10·1 answer
  • True or false, the following expressions are equivalent:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!