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
notsponge [240]
2 years ago
13

Please help!! I’m stuck on this

Mathematics
1 answer:
beks73 [17]2 years ago
7 0

Answer:

B.  x = -4\,\lor \,x = -1

Step-by-step explanation:

Let \sqrt{-4-5\cdot x} = x, we solve for x by algebraic means.

1) \sqrt{-4-5\cdot x} = x Given

2) -4-5\cdot x = x^{2} Definition of power/Symmetry of equality

3) x^{2}+5\cdot x + 4 = 0 Compatibility with addition/Commutative and associative properties/Existence of additive inverse/Modulative property

4) (x+4)\cdot (x+1) = 0         x^{2}+(a+b)\cdot x +a\cdot b = (x + a)\cdot (x+b)

5) x = -4\,\lor \,x = -1 Result

Hence, the correct answer is B.

You might be interested in
The ratio of chicken to vegetables in a soup is 2:3. If there are 9 cups of chicken, how many cups of vegetables are in the soup
zlopas [31]

Answer:

13.5

Step-by-step explanation:

2/3=9/x

2x=9*3

2x=27

x=27÷2

x=13.5

4 0
3 years ago
Order these decimals form greatest to least 3.6; 0.36; 36; 0.036
aliina [53]
36, 3.6, 0.36, 0.036 is the order
4 0
3 years ago
Read 2 more answers
a bicylist started riding at 8:00 am the digram below shows the distance the bicylist had traveled at diffrent times. what was t
Darina [25.2K]

there is no answer because there is no .Th in what ever you ate trying to talk abput

5 0
9 months ago
Write a variable expression for this amount.<br> fourteen times x<br> Type the correct answer.
Ymorist [56]

Answer:

14x

Step-by-step explanation:

14x = 14 x (x) = 14(x)

3 0
3 years ago
In a scale drawing a plane has a length of 35 centimeters. The actual length of the plane is 87.5 feet. What is the scale of the
ICE Princess25 [194]
If 35 cm  represent the length of the plane which is 87.5 ft of the actual plane length. let 1 cm be x ft. 
35 cm = 87.5 ft
1 cm = x ft
cross multiply this and the answer is 2.5 ft. Therefore, the scale drawing is 1 cm is 2.5 ft.
3 0
2 years ago
Other questions:
  • Running consumes about 720 calories per hour about how many are used if you run for 40 minutes
    5·1 answer
  • Nina walked 15 yards to Paul's house. They then went hiking. Which rule shows how many yards Nina walks for every yard Paul walk
    6·2 answers
  • Which expression is equivalent to 24 ⋅ 2−7?
    12·2 answers
  • Two families stayed at the same hotel in identical rooms. The first family stayed for 5 nights and paid extra to use a rollaway
    12·1 answer
  • What is the cost of the TV?
    5·1 answer
  • -.25 x+1.3=-.55x-.2 find x
    14·1 answer
  • 4. Which of the following describes all the solutions of -4x + 2y &gt; 12 when y = 4?
    5·1 answer
  • 5/8 ÷ 2/8 = ????????????????????????​
    13·2 answers
  • If 2X = 4096, find value of x.
    13·1 answer
  • A line has a slope of zero. Which of the following points could this line pass through?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!