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
jok3333 [9.3K]
3 years ago
14

Solve the equation: x2 - 12x = -36

Mathematics
2 answers:
Natalija [7]3 years ago
6 0
x^2-12x=-36\ \ \ |add\ 36\ to\ both\ sides\\\\x^2-12x+36=0\\\\x^2-2x\cdot6+6^2=0\ \ |use\ (a-b)^2=a^2-2ab+b^2\\\\(x-6)^2=0\iff x-6=0\ \ \ |add\ 6\ to\ both\ sides\\\\\boxed{x=6}
Taya2010 [7]3 years ago
4 0
In ~~Use ...  \\ x^2 - 12x = -36\rightarrow (ax^2+bx + c  = 0) \\ x^2 - 12x + 36 = 0  \\   \\a = 1  \\ b = - 12 \\ c = 36 \\ \\  Delta: \\ \Delta = b^2 - 4ac \\ \Delta = (-12)^2 - 4.1.36 \\ \Delta = 144 -144 \\ \Delta = 0\\   \\ Bhaskara: \\  \\ x =  \frac{-b\pm \sqrt{\Delta} }{2a}  \\  \\ x =  \frac{-(-12)\pm \sqrt{0} }{2.1}  \\  \\ x =  \frac{12\pm0}{2} 
 \\  \\ x' =  \frac{12 + 0}{2} =  \frac{12}{2}  = 6 \\  \\ x'' = \frac{12 - 0}{2} =  \frac{12}{2}  = 6 \\  \\ S = \{6\}
You might be interested in
How to find the answer
KATRIN_1 [288]
Use this equation:
A = P(1+r)^t

Where A is the final amount
P is the initial amount
r is the annual rate
t is the time in years

P = 1500
r = 0.07
t = 3

A = 1500 (1.07^3)
≈ $1837.56

Have an awesome day! :)
5 0
3 years ago
Find the length of RT R(12,7) T(6.-2) ​
Mazyrski [523]
05.05)On a coordinate plane, the coordinates of vertices R and T for a polygon are R(−6, 2) and T(1, 2).
6 0
3 years ago
A. 92%
Yanka [14]

\huge\mathfrak\blue{answer}

c) \: 23\%

Let's figure out how many pieces of candy there is in total:

10 + 12 + 6 = 28

In total, there are 28 pieces of candy.

Let's find the probability that a piece is sour:

\frac{10}{28}  =  \frac{5}{14}

The probability of pulling a sour piece out of the bag is 5/14.

This means that the probability that the candy pulled is not sour is 9/15 (or simplified 3/5)

To find the probability that the first candy picked out is sour AND the second candy picked is not sour we have to multiply the probabilities of both:

\frac{5}{14} * \frac{3}{5}  = 0.229 = 23\%

\huge\sf\blue{thank \: you}

(Brainliest would be appreciated :))

4 0
3 years ago
10.Which of the following is HCF of 2x^2-18 and x^2-2x-3?
Vika [28.1K]

Answer: x - 3

Step-by-step explanation:

Factor:

2x^2 - 18

1. Factor out 2:  2(x^2 - 9)

2.Factor x^2 - 9 into (x-3)(x+3):  2(x - 3)(x + 3)

*Notice that x^2 - a^2 can always be factored into (x-a)(x+a)

where a is a constant so in this case, a is 9 which is also 3^2

so x^2 - 9 can be factored into (x - 3)(x + 3)

x^2 - 2x - 3

1. Think what two numbers multiplied together is -3 and added together is 2

-> 3 and -1 since 3(-1) = -3 and 3+ (-1) = 2

2. Factor x^2 - 2x -3 into (x - 3)(x + 1)

Therefore, since both 2x^2 - 18  and x^2 - 2x -3 do not have another common factor besides x - 3, x - 3 is the HCF of 2x^2 - 18  and x^2 - 2x -3.

7 0
3 years ago
Consider the first five steps of the derivation of the Quadratic Formula.
Sergio [31]

Answer:

B

Step-by-step explanation:

some people can't understand lafossefams joke

7 0
3 years ago
Other questions:
  • What is another number of pennies and total mass of pennies in grams if my number of pennies is 10 and the mass in grams is 25
    10·1 answer
  • 10 points lol 6th grade math coordinate points
    12·1 answer
  • What is the answer for this equation? <br> -6x = -36
    10·2 answers
  • What's a proportion that can be used to find out how many points a student needs to reach 78 percent on a 50 point quiz?
    12·1 answer
  • 13 please I have no idea what the steps for this is
    10·1 answer
  • THIS QUESTION IS WORTH 15 POINTS
    10·1 answer
  • 75% of blank peaches is 15 peaches?
    5·1 answer
  • Felix is dividing 322 by 12. He
    12·2 answers
  • Graded Assignment
    8·1 answer
  • Use grouping symbols and at least one exponent to write a numerical expression that has a value of 80.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!