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
JulijaS [17]
2 years ago
9

X^2=12x-40 solve this equation using the quadratic formula​

Mathematics
2 answers:
dybincka [34]2 years ago
7 0

Answer:

Step-by-step explanation:

X²=12x-40

X²-12x+40=0

a=1  and b= -12 and c = 40

delta = b² - 4ac

delta = (-12)² - 4(1)(40) = 144 - 160 = - 16 = (4i)² ....i² = -1

x1= (12-4i)/2 =6-2i

x1= (12+4i)/2 =6+2i

almond37 [142]2 years ago
6 0

Answer:

Step-by-step explanation:

x^2 = 12 x-40

x² - 12x + 40 = 0

a = 1;  b = -12; c = 40

4ac - b² = 4*1*40 - (-12)² = 160 - 144 = 16

x = -b ± √4ac-b² i / 2a

 =<u> -(-12) ± √ 16 i </u>

          2 * 1

= (12 ± 4 i )/ 2

= <u>2( 6 ±  2i)</u>

        2

=   6 ±  2i

You might be interested in
PLSSS HELP I’LL GIVE BRAINIEST
Bess [88]

Answer:

Step-by-step explanation:

Find the amount of time it takes for a beam of light from the Sun to reach Earth.

3 0
1 year ago
Rose has a playlist with 40 rock songs and 28 country songs. What is the ratio of country songs to rock songs on the playlist?
cupoosta [38]
<em>The answer is 10:7, 10/7, 10 to 7. Whichever it's asking for. As long as you know the ratio is 10 rock songs to 7 country songs.
</em>
<em /><u>
</u><em />This problem can be a simple fraction simplification problem. Here's what I mean:
<em>
</em>
<em />So, we have 40 rock songs and 28 country songs. Let's put that into a fraction:
<em>
</em>
\frac{40}{28}
<em>
</em>To simplify this as much as possible, all we have to do is find the greatest common multiple and divide it by both numbers. the GCF is 4, so all you have to do is divide 40 by 4 and 28 by 4 to get your ratios.
<em>
I hope this helped!!

</em>
7 0
3 years ago
Read 2 more answers
What's 2 - 4 + 3 ×2<br> Pls solve this quick
Triss [41]

Answer:

4

Step-by-step explanation:

3x2 is 6

2-4 is -2

6-2 is 4

8 0
2 years ago
Read 2 more answers
What’s the answer 4±√10
valina [46]

Answer:

1

Step-by-step explanation:

1 because it 1 and I know it one I need help 1

3 0
3 years ago
What percentage is 15 out of 17?
Ket [755]
88.23%

Simply plug 15/17 into you calculator 

and it will give you a decimal, in this case it should be .88235294...

simply move the decimal back to placements and you should have

88.235294... thats still a lot of numbers so just reduce it to 2 places after the decimal and add a percent sign

88.23%

and your done :) this works for any similar problems

I hope this helps

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is 126,945 rounded to the nearest thousand
    14·2 answers
  • Which is bigger 1/2 or 11/12
    5·1 answer
  • What is the final price for a pair of $39.50 jeans after 5% sales tax has been added
    6·1 answer
  • Which steps can be used to solve StartFraction 6 Over 7 EndFraction x + one-half = StartFraction 7 Over 8 EndFraction for x? Che
    9·2 answers
  • Coordinates of a Pre-image
    9·2 answers
  • Explain how you can solve 8x8 if you know how to multiply with 4 but not how to multiply with 8
    12·2 answers
  • The rectangular rug in Marcia's living room measures 12 feet by 109 inches. What is the rug's area in square feet?
    11·1 answer
  • Which situation would you represent with a negative integer?
    15·1 answer
  • Which coordinates of jefferson high school's baseball field
    13·1 answer
  • I have more yeyeyey
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!