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
Alekssandra [29.7K]
3 years ago
6

Which shows the correct substitution of the values a b and c from the equation -2 equals negative X Plus x squared minus 4 into

the quadratic formula?
Mathematics
1 answer:
kondor19780726 [428]3 years ago
5 0
-2=-x+x square-4
firstly regroup the equation
x square-2x+x-2=0
x square-x-2=0
multiply the first term by the last term.(I.e x square multiply by -2=-2x square)
product of factor = -2x 1
sum of factor= -2x+1(x)= -1
x square -2x+x-2=0
open the bracket:
x(x-2)+1(x-2)=0
x=1 or x=-2
Therefore; x=-1 or x=2


You might be interested in
The probability of choosing a winning card from a stack of cards is 5.3%.
drek231 [11]

Answer:

94.7%

Step-by-step explanation:

If it is only winning or losing cards, then you can subtract 5.3 from 100 because probability is out of 100%

100-5.3 = 94.7

8 0
3 years ago
Plz hurry help!!!!:) What is the length of AD? Round your answer to the nearest hundredth.
jolli1 [7]

Answer:

AD=5.82 units

Step-by-step explanation:

tan 31=3/BD

0.6009=3/BD

BD=5

AD^2=3^2 + 5^2

AD^2=9+25=34

AD=5.82

8 0
3 years ago
Read 2 more answers
If a hose is filling a swimming pool at a rate of 20 liters per minute, how long will it take to fill the 3,600-gallon pool?
Cloud [144]

Answer: the correct answer is 11 hours, 21 seconds and 3738 fractions of a second.

Step-by-step explanation:

An American gallon has 3.78541 liters.

3,600 gallons are 13,627.46 liters since 3,600 gallons * 3.78541 liters per gallon= 13,627.46 liters

We will need 681.3738 minutes to fill the pool since 13,627.46 liters divided by 20 liters per minute = 681.3738 minutes

681.3738 minutes is 11 hours and 21.3738 seconds since 11*60 minutes + 21.3738 minutes = 660 minutes + 21.3738 seconds = 681.3738 or 681.3738 divided by 60 minutes ( 1 hour ) is 11 hours and 21.3738 seconds.

7 0
3 years ago
Help me out please !?
Korolek [52]
21in.
1/2*base*height=area of a triangle
Side^4=square area
Square+Triangle(4)=total
Square=9      Triangle=3
4 0
3 years ago
Find the missing lengths of the sides
Kay [80]
Your answer would be A.

according to the 30°, 60°, 90° triangle rules,
side a would equal x
side \: b \: would \: equal \: x \sqrt{3}
and side c would equal 2x
4 0
3 years ago
Read 2 more answers
Other questions:
  • 10=5x what is the value of x
    6·2 answers
  • 11.) the diffrence between 8 and a number
    5·1 answer
  • The graph of y = x^3 is transformed as shown in the graph below. Which equation represents the transformed function?
    8·1 answer
  • You are making 10 tons of concrete that is 37.9% cement by mixing a 25% cement mixture with a 68% cement mixture.
    13·1 answer
  • Ingnore question 17 but i need help 30 POINTS!!!
    10·1 answer
  • Plz help and explain thanks!!!
    5·1 answer
  • Can someone tell me if this is the correct choice?
    12·1 answer
  • Finding missing angles
    9·1 answer
  • Solve for missing variables on these two seperate questions.
    7·2 answers
  • Round each decimal number to the nearest tenth. Then, select the best estimate for the subtraction equation 3.21 − 1.19 = ___. h
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!