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
Pachacha [2.7K]
3 years ago
14

5x^2=x+1 solve using completion of squares

Mathematics
1 answer:
sesenic [268]3 years ago
8 0
Take everything to one side and equate it to zero
So: 5x^2 -x -1=0
Next factorise so it’s 5(x^2-1/5)-1=0
So: 5(x-1/5) ^2 -1=0
So complete the square
First of all remove the five by division (x- ((1/5)/2)^2+ (1/5/2)^2 ) -1 =0
So (x- 1/10)^2 +1/5 +1/100 =0
Answer is (x-1/10)^2 -21/100 =0
Take -21/100 to the other side so:
(x-1/10)^2 = 21/100
Square root both sides so
(X-1/10) = square root of 21/100
Take -1/10 to the other side so
X= 1/10 + square root of 21/100
You might be interested in
how do you solve distributive properties ?? and pre algebraic expressions/equations i have a test over it all and i'm in 7th gra
professor190 [17]

Answer:

I was totally in your shoes then..

Step-by-step explanation:

Watch Fort Bend Tutoring on YT, he got me through those math problems...I can assure it will help, and he makes Math fun

4 0
3 years ago
What is a relative frequency?
SVETLANKA909090 [29]

Answer:

"A relative frequency distribution is a table that shows the relative frequency for all categories as shown below. Notice that the sum of the relative frequencies is always equal to 1. The percentage of a category is found by multiplying the relative frequency of that category by 100."

Credits To: statistics-made-easy.com › what-is-relative-frequency

4 0
3 years ago
Please help!! graph y=sec(x)
Evgen [1.6K]
You can use desmo its a site that helps graph
3 0
4 years ago
Triangles ABC and DEF are right triangles, as shown. A ABC is similar to A DEF
Fiesta28 [93]

Answer:

a/c and d/e are equal to cos(b)

Step-by-step explanation:

i used substitute and solve at first, but that didnt work too well so i moved on to the guess and check method.

my guess is a/c and d/e are equal to cos(b), can anyone check this?

4 0
3 years ago
Near the equator, the earth rotates approximately 34 kilometers every 32 seconds. what is the speed of earth's rotation near the
viktelen [127]

Answer:

Step-by-step explanation: The earth rotates 34 km every 32 seconds. We can simplify this by dividing both sides by 32. Now, we have 34/32 km every 32 seconds. Now, to further simplify this, we need to convert 34/32 to a mixed number 34/32 = 1 2/32 which then can be simplified to 1 1/16. So, near the equator, the speed of Earth's rotation is 1 1/16 km per second.

4 0
2 years ago
Other questions:
  • The score with respect to par of several golfers:2,-3,5,0,-1
    9·1 answer
  • What is the distance between the points (-6, 2) and (2,4)
    10·2 answers
  • When given an algebraic expression involving subtraction, why is it best to rewrite the expression using addition before identif
    7·1 answer
  • PLEASE SOLVE NOW I WILL MARK BRAINLEST IF SOLVED
    14·1 answer
  • You have found the following ages in years of all 5 gorillas at your local zoo: 8,4,14,16,8 what is average age of the gorillas
    15·2 answers
  • -2 1/6 as a decimal i don’t know the answer
    14·1 answer
  • PLEASE HELP ME. THIS IS DUE TODAY
    15·1 answer
  • Help! will vote brainliest first answer
    9·2 answers
  • i want to get rid of my points and give back to the community of brainly its helped me so much and i and just wanted to say than
    11·2 answers
  • Bella has a stack of 41 bills (ones, fives, and tens) in an envelope. She has 3 less tens than fives and the quantity of ones do
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!