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]
3 years ago
9

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

Mathematics
2 answers:
dybincka [34]3 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]3 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
Roy is 30 miles from dallas ready to leave for pecos
12345 [234]

Answer:

It represents the 270 miles that Roy and Travis must travel in 4 hours in order to meet somewhere along the highway.

Step-by-step explanation:

From the information given, the point of interception (4, 270) represent the number of distance, 270 miles, that both Roy and Travis must travel in 4 hours in order to meet along the highway where Roy will give Travis the key to a treasure chest to Roy.

4 0
3 years ago
Yellow Cab Taxi charges a $1.75 flat rate in addition to $0.65 per mile. Katie has no more than $10 to spend on a ride. How many
spayn [35]
About  miles. 

Subtract the flat rate of 1.75 from the spending limit of 10$ which leaves you with 8.25 then divide the rest of your spending money (8.25$) into your rate per mile (0.65) , so essentially , 8.25 / 0.65 which leaves you with the answer of ;
12 miles.
3 0
3 years ago
Read 2 more answers
A jet flies at a rate of 1.3x10 to the 6 feet per hour. Written in scientific notation, which is the best estimate of how many f
Semenov [28]
This is scientific notation

6 0
3 years ago
Read 2 more answers
Incorrect
kipiarov [429]

Answer:

46.3%/100 x 162 = 75.006 games. I guess you could round it off to 75 games

6 0
2 years ago
The birth rate of a population is b(t) = 2300e0.021t people per year and the death rate is d(t)= 1450e0.018t people per year, fi
Cerrena [4.2K]

Answer:

38,674.This area represents the increase in population over a 10-year period.

Step-by-step explanation:

When graphed over the interval 0 ≤ t ≤ 10, the birth rate is more than the death rate. This means the area between the two curves is the amount of births subtract the amount of deaths. This results in an area which means the increase of the population.

The birth rate is graphed in green and the death rate is graphed in blue.

To find the area, take the integral of the difference of the functions:

\int\limits^{10}_0 {2300e^{0.021t} - 1450e^{0.018t} } \, dt \\\\\frac{2300e^{0.021t}}{0.021} -  \frac{1450e^{0.018t}}{0.018} \\\\(\frac{2300e^{0.21}}{0.021} -\frac{1450e^{0.18}}{0.018} ) - (\frac{2300}{0.021}- \frac{1450}{0.018} ) \\\\135117.12 - 96442.51 \\\\38,674

7 0
3 years ago
Other questions:
  • The quotient between the sum of 8 and 9 and the difference of 8 and 9
    11·2 answers
  • Complete the conditional statement. If -2a &gt; 6, then _____. a &gt; 3 a &lt; 3 a &lt; -3 a &gt; -3
    6·1 answer
  • Does anybody have an idea
    11·1 answer
  • The standard golf ball has a mass of 45g.How many golf balls are there in a bag weighing 1.8 kg?
    7·2 answers
  • what is the first step in writing f(x)=6x^2+5-42x in vertex form? a) factor 6 out of each term. b) factor 6 out of the first two
    8·1 answer
  • Multiply the polynomial <br><br> 10. (3-2v)(2-5v)<br><br> 11. (5x-4)(3x2+x-5)
    14·1 answer
  • Please help me I will offer 20 points
    12·1 answer
  • I need help with these questions from 11 to 20. I already did questions 1 through 10 with my math teacher but I'm not in school
    11·2 answers
  • Select all of the symbols that would make the comparison true.
    5·2 answers
  • Solve 1,2,3,4 !!!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!