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
lidiya [134]
3 years ago
15

Use completing the square to solve x^2+6x=13

Mathematics
1 answer:
lara [203]3 years ago
8 0

Answer:

x = -3 +/- square root(22)

Step-by-step explanation:

x = -b +/- square root(b^2 - 4ac) / 2a

ax^2 + bx + c = 0

these are both the quadratic formula but one is solved for the x and another for 0

a= 1

b= 6

c = -13

x= -6 +/- square root( 6^2 - 4(1)(13)) / 2(1)

x = -6 +/- sqrt( 36 + 52) / 2

x= -6 +/- sqrt (88) / 2

sqrt of 88 = 2 x sqrt (22)

divide 2 on each

x= -3 +/- sqrt (22)

You might be interested in
What expression in terms of x can be used to represent the area of parallelogram PQRS?
borishaifa [10]

Answer:

C. (5x√2)² = 50x²

Step-by-step explanation:

Area of parallelogram = QR²

QR = √((5x)² + (5x)²) ---› pythagorean theorem

QR = √(25x² + 25x²) =

QR = √(50x²)

QR = √(25*2*x²)

QR = 5x√2

✔️Area of parallelogram = QR²

= (5x√2)² = 25x² × 2 = 50x²

4 0
3 years ago
Identify the slope and y-intercept of the following equation:<br> Y= -1/2x + 6
9966 [12]
Slope = -1/2

y-intercept = 6

<3
4 0
3 years ago
Which column represents the correct method for the proof of the following statement?
kramer

Answer:

90

Step-by-step explanation:

the colums add up to angle 1, which make angle 2 adjacent.

9-9=0

3 0
3 years ago
Sarawong invests $7,371 in a savings
zvonat [6]

Answethere should be an answer key online

Step-by-step explanation:

6 0
3 years ago
Which simplified fraction is equal to 0.53 repeat ? A.24/46 B.8/15 C.42/90 D.5/9
murzikaleks [220]

Answer:

To see how these fractions are equal, I divided the numerators by the denominators. For instance, you could have 4 over 5 (4/5) and divide 4 by 5 (4/5) to get 0.8. Now you'll do the same thing for the fractions given

24/45=0.533...

8/15=0.533...

48/90=0.533...

5/9=0.5556

As you can see, the only fraction that doesn't equal 0.53, or the outlier, is 5/9 or 0.5556

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • CAN SOMEONE PLEASEEEE ANSERR THISSSSSSSS THANK YOU SO VERY MUCH
    15·2 answers
  • a microwave is placed on top of two boxes. One box is 3 feet 7 inches tall, the other box is 4 feet 10 inches tall, and the micr
    5·2 answers
  • A rectangular building with a square front is to be constructed of materials that costs 13 dollars per ft2 for the flat roof, 12
    6·1 answer
  • Subtract p from 8, then divide 3 by the result
    14·1 answer
  • Jackie is knitting a scarf with her grandmother. Yesterday, her grandmother used 2/3 of a skein of wool and Jackie used 1/3 of a
    15·2 answers
  • -6x-43-4
    15·2 answers
  • Guys pls help me!!!!!
    8·1 answer
  • Help pls What is the volume of this composite solid?
    11·2 answers
  • What is the answer 2+2=___+5=____
    7·2 answers
  • Type the correct answer in the box. Write your answer as a whole number. The radius of the base of a cylinder is 10 centimeters,
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!