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
Ludmilka [50]
3 years ago
15

Can someone please help with this?

Mathematics
2 answers:
Alex Ar [27]3 years ago
5 0

Answer:

Answer for x = 5

Step-by-step explanation:

√5x  +11   - 1  = x         We isolate

-√5x+11 = -x-1             We tidy up

√5x+11 = x+1               We raise both sides to second power

  (√5x+11)2 = (x+1)2     After brackets we show after squaring

 5x+11 = x2+2x+1         We rearrange the order

x2  - 3x  -10 = 0           We count the roots = 2

{x1, x2}={5, -2}              We show the roots and show original equation, where the root is isolated, after tidy up

    √5x+11 = x+1           Plug in 5 for  x as x =5

     √5•(5)+11 = (5)+1     Then simplify

     √36 = 6                  Solution checks !!

    Solution is:

     x = 5

Original equation, root isolated, after tidy up

√5x+11 = x+1           Plug in  -2 for  x

√5•(-2)+11 = (-2)+1   Simplify

            √1 = -1        Solution does not check

               1 ≠ -1

Answer for x = 5

IrinaVladis [17]3 years ago
3 0

Answer:

x= -2, x = 5

Step-by-step explanation:

\sqrt{5x+11}-1=x

\sqrt{5x+11}=x+1

5x+11=(x+1)^2

5x+11=x^2 + 2x + 1

0=x^2 + 2x + 1-5x-11

0=x^2 -3x-10

0=(x+2)(x-5)

x= -2, x = 5

You might be interested in
A quality control engineer tests the quality of produced computers. Suppose that 5% of computers have defects and defects occur
gogolik [260]

Answer:

*(0.168) 1*.75-9386

2865

7 0
4 years ago
5. A rectangle has an area of 16 cm². Do you know its length?
timurjin [86]

Answer:

144 cm^2

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
The length of a room is 4 feet less than twice its width. The perimeter of
AlladinOne [14]

L=2W-4

PERIMETER=2L+2W

58=2(2W-4)+2W

58=4W-8+2W

58=6W-8

6W=58+8

6W=66

W=66/6

W=11 ANS. FOR THE WIDTH.

L=2*11-4

L=22-4

L=18 ANS. FOR THE LENGTH.

PROOF:

58=2*18=2*11

58=36+22

58=58

5 0
3 years ago
Given the functions, f(x) = x2 + 2 and g(x) = 4x - 1, perform the indicated operation. When applicable, state the domain restric
Naya [18.7K]

Answer:

3rd option

Step-by-step explanation:

substitute x = f(x) into g(x)

g(f(x))

= g(x² + 2)

= 4(x² + 2) - 1

= 4x² + 8 - 1

= 4x² + 7

5 0
2 years ago
The Malcolms are taking a trip. Midville is 214 miles
Juliette [100K]

Answer:

642 miles

Step-by-step explanation:

Distance of Midville from their home = 214 miles

Walesburg is 3 times as far.

How far is Walesburg from their home?

Distance of Walesburg from their home = 3 × Distance of Midville from their home

= 3 × 214 miles

= 642 miles

Distance of Walesburg from their home = 642 miles

8 0
3 years ago
Other questions:
  • Find the measurement for angle AGE when angle FHD = 30°
    5·2 answers
  • Given the sets a={0,1,2,3,} b={a,b,c,d} c={0,a,2,b}. Find B u c
    6·1 answer
  • Pe ling needs 2 yard of fabric for a craft project. She has 3 feet already. How many inches of fabric does she still need ?
    5·2 answers
  • Determine whether the following sample may be biased and explain.
    14·1 answer
  • An average person's heart beats about 103,680 times a day. Write and solve an equation to find about how many times the average
    6·2 answers
  • What is the value of 7x2−6x when x = 4
    13·1 answer
  • Help pt.idk lol plzz​
    5·1 answer
  • Need help with math problem if do get 5 star
    15·1 answer
  • Find the perimeter of the triangle, round to the nearest tenth
    9·1 answer
  • HELPPPPP!!!!!!!! (explanation needed too)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!