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
vlada-n [284]
3 years ago
10

Solve for x.

Mathematics
1 answer:
Masteriza [31]3 years ago
7 0

Answer:

x = 2.5 or -0.8

Step-by-step explanation:

Here, we are to use completing the square method to solve for the values of x

Firstly, we divide through by 4

= x^2 -7/4x -2 = 0

Now, we move the two term to the right hand side

x^2 -7/4x = 2

Now, we divide the coefficient of x by 2 and square it;

That would be;

(-7/4 * 1/2)^2 = 49/64

we now add this value to both sides of the equation

x^2 -7/4x + 49/64 = 2 + 49/64

The right hand side can be rewritten as;

(x-7/8)^2 = 177/64

taking the square root of both sides

x-7/8 = √(177/64)

x = 7/8 ± √(177/64)

x = 7/8 + √(177/74) or 7/8 - √(177/64)

= x = 2.53802 or -0.788017

Which to the nearest tenth is

x = 2.5 or -0.8

You might be interested in
Kaylee put $240.00 in a bank account that gains 25%
creativ13 [48]

Answer:

S=720

Step-by-step explanation:

25$ of 240 =60

60×12months=720

5 0
3 years ago
can someone help me with this
stiks02 [169]
90000
Haha boogaloo booga
8 0
3 years ago
What is the volume of a cube whose surface area is 294 in2?
vodka [1.7K]

Answer:

V=343in³

Step-by-step explanation:

A=6a2

V=a

3V=6A3/2

36=6·2943/2

36=343in³

7 0
3 years ago
Y+9-x; use x=1, and y=3
borishaifa [10]

Answer:

13

Step-by-step explanation:

because 3+9=12+1=13

7 0
3 years ago
Read 2 more answers
Multiply. 862.4 × 0.03 A. 25.872 B. 258.72 C. 2,587.2 D. 25,872
MissTica
The answer I got is A. 25.872
7 0
3 years ago
Other questions:
  • Please help me out with this algebra2
    6·1 answer
  • Simplify x^3 /x<br><br><br><br> Help
    10·1 answer
  • the 600 students at king middle school are divided into three groups of equal size for lunch. Each group has lunch at a differen
    8·1 answer
  • 4. A die is rolled, what is the probability that number is :<br>a. Odd ?<br>b. Even ?<br>​
    12·1 answer
  • If y varies inversely with x, and y is 8 when x is 5, find y when x is 2.
    7·1 answer
  • What is a Corollary?<br><br> Thxxx
    6·1 answer
  • Circle O is inscribed in the given triangle.
    12·2 answers
  • An artist makes a scale drawing of a building he likes. The building is 90 feet tall and 45 feet wide.If this picture is 3 feet
    13·2 answers
  • If x+y=3 and xy=2 find the value of x^2+y^2​
    12·2 answers
  • Can someone PLEASE help ASAP. at least one.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!