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
ollegr [7]
3 years ago
11

Find the exact solutions to 2x^2=5x-1 by using the quadratic formula

Mathematics
2 answers:
Luda [366]3 years ago
3 0

Solve the equation for  x  by finding  a ,  b , and  c of the quadratic then applying the quadratic formula

Exact form:

x =  5 ± √ 17

     4

Decimal:

x =  2.28077640 … , 0.21922359

sorry idk how to put a fraction in

klio [65]3 years ago
3 0

Answer:

The exact solution is (5 ± √17) / 4.

Step-by-step explanation:

2x^2 = 5x-1

2x^2 - 5x + 1 = 0

then,

a = 2, b = -5, c = 1

Now, by using quadratic formula,

(-b±√(b²-4ac)) / (2a)

(5 ± √(-5)^2 - 4(2)(1)) / 2×(2)

(5 ± √17) / 4.

You might be interested in
Rectangle with area of 10 and length of 2 1/2. Whats the width?
Stels [109]
Hello!

We have been given enough information to solve this question!
We know that the length of the rectangle is 2.5, and we also know how to find the area:

A = l × w

But we don't need the area, we need to find the width of the rectangle! You see, we had to multiply the length by the width to find the area.

Now, to find the width, we must flip the problem around and use the opposite of multiplication, which is division.

W = a ÷ l

W = 10 ÷ 2.5

W = 4

Therefore, the width of the rectangle is 4.
3 0
3 years ago
Read 2 more answers
ANSWER FAST PLEASE
NemiM [27]

Answer:

B.18

Step-by-step explanation:

2+1+3

3+3=6

6+5=11

11+7=18

6 0
4 years ago
Read 2 more answers
one number is four times as large as another if the numbers are added together the result is six less than seven times the small
liubo4ka [24]

Answer:

The numbers are 12 and 3.

Step-by-step explanation:

We can solve this problem by working with the information we have and setting up some equations.

We know that one number is four times as large as another. So, let the smaller number be represented by the variable x and the bigger number be represented by 4x, since it is four times as large.

Now, we know that if the numbers are added together, then the result is six less than seven times the smaller number. This can also be represented by the equation 4x + x = 7x - 6.

Let's solve that equation like so:

4x + x = 7x - 6\\5x =  7x - 6\\-2x = -6\\x = 3

So, the smaller number must be 3 (remember that x represented the smaller number). To find the bigger number, all we need to do is multiply 3 by 4, which gives us 12. Therefore, the numbers are 12 and 3.

4 0
3 years ago
Translate the phrase "in 3 years" into algebraic terms
Semenov [28]

Answer:

In three years can be into algebraic terms as:  3 + x. Where 'x' comes to be today's age.

For example, my age in three years will be:

If I'm 24 years right now, My age in three years = 3 + x ⇒ My age in three years = 3 + 24 = 27.

3 0
4 years ago
HELP URGENT GET IT CORRECT ALL OF THEM
Nikolay [14]

Answer:

2/9

Step-by-step explanation:

1/3 * 2/3 = 2/9

Answer:

136/9

Step-by-step explanation:

4 1/4 * 2 2/3 = 17/3 * 8/3 = 136/9 = 15 1/9

6 0
3 years ago
Other questions:
  • Classify the following random variables as discrete or continuous:X: the number of automobile accidents per year in Virginia. Y
    9·1 answer
  • In the figure the segment is parallel to one side of the triangle. The ratio of x to y
    15·2 answers
  • Question help the construction of the tminus−statistic for a oneminus− and a twominus−sided hypothesis
    5·1 answer
  • An architectural engineer is designing a parabola dome that will be 200 feet in diameter with a max height of 50 feet. find the
    5·1 answer
  • CAN SOMEONE PLEASE HELP ME?
    15·1 answer
  • Find the slope of the tangent line to f(x) = 2x +3 at<br> at x = 2.
    13·1 answer
  • Please help me answer the 3 questions ^^
    8·2 answers
  • Does anyone have the answer key to these proofs? They are Mrs. E Teaches Math introductory proofs. There are 14 total. I've done
    10·1 answer
  • A factory uses 1/6 of barrel of raisins in each batch of granola bars. Yesterday,the factory used 7/6 barrels of raisins. how ma
    12·1 answer
  • N is the in center of △ABC. Use the given information to find NS.<br><br><br> NQ=2x<br> NR=3x−2
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!