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
scZoUnD [109]
3 years ago
9

Solve this quadratic equation using the quadratic formula. x2 + 8x - 5 = 0

Mathematics
1 answer:
jasenka [17]3 years ago
7 0
X^2 + 8x - 5 = 0
a = 1, b = 8, c = -5
x = ( - 8 + - sqrt(64 - 4*1*-5))/2
x = ( -8 + - sqrt(64+20))/2
x = ( -8 + - sqrt (84))/2
x = ( - 8 + - 2sqrt21))/2
x = -4 + - sqrt21
You might be interested in
Solve f(2)= 4 x 2^2-8 x 2+1=
aleksklad [387]

Answer:

If you're solving for F then F=1. If you're solving for x then there's no solution


5 0
4 years ago
Evaluate 9/m +4 when m =3
iVinArrow [24]

Answer:

the answer is 7

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
The variable in a relation who’s value depends on the value of the independent variable is called what?
Viefleur [7K]
That is called the dependent variable. It depends upon the value of the independent variable.

f(x)=y

So we can see by inspection that the dependent variable y value depends upon the input value of the independent variable x

Any questions please feel free to ask. Thanks
3 0
4 years ago
Lori has 60% of the book to read. If she has read 120 pages how many pages does she still have to read
maks197457 [2]
Ok, so 120 pages plus the 60% of the book she has left to read will give the total number of pages.

That means that 120 pages is 40% of the book.

Make a proportion

120/40% = x/60%

72 = .4 x

x = 180 pages
5 0
4 years ago
Read 2 more answers
50 POINTS. WILL MARK BRAINLY!!
MatroZZZ [7]
His answer and process are both incorrect because he needs to divide 10^-4 by 10^-3 to get 4*10^-1 and the answer is .025 times larger.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Determine two coterminal angles (one positive and one negative) for each angle. Give your answers in radians. (Enter your answer
    12·1 answer
  • Figure VWYX is a kite.<br><br> What is the value of x?
    10·2 answers
  • Which of these is an example of an employer using benefits to encourage employees to stay with the company?
    9·2 answers
  • (1 point) The shelf life of a battery produced by one major company is known to be normally distributed with a mean life of 3 ye
    11·1 answer
  • What's 1/10 at four in the number 42,000
    5·1 answer
  • Answer d is 65 c is 63 b is 33 a is 31
    10·1 answer
  • Plz help i will report if your not trying to answer​
    15·1 answer
  • HEY can some please help me I will give you BRAINLEST!!
    10·2 answers
  • Ill give u the crown thingy pls help
    13·1 answer
  • 1. A. What is the mean absolute deviation of the following data set? Round to the nearest hundredth if necessary.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!