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
const2013 [10]
3 years ago
14

PLEASE HELP Solve for x in the equation 2x^2 - 5x + 1 = 3

Mathematics
2 answers:
Alchen [17]3 years ago
3 0
Answer:

<span>x=<span><span>5±<span>√41</span></span>4</span></span>

Explanation:

<span>2<span>x2</span>−5x+1=3</span>

<span><span>aaaaaaa</span>−3a−3<span>aaa</span></span>Subtract 3 from both sides

<span>2<span>x2</span>−5x−2=0</span>

This equation is not factorable, so use the quadratic formula.

<span>x=<span><span>−b±<span>√<span><span>b2</span>−4ac</span></span></span><span>2a</span></span><span>aaa</span></span> for<span><span>aaa</span>a<span>x2</span>+bx+c=0</span>

<span>a=2,b=−5,c=−2</span>

<span>x=<span><span>−<span>(−5)</span>±<span>√<span><span><span>(−5)</span>2</span>−4<span>(2)</span><span>(−2)</span></span></span></span><span>2⋅2</span></span></span>

<span>x=<span><span><span>5±<span>√41</span></span>4</span></span></span>

hope this helped :)

alisa202

algol133 years ago
3 0

Answer:

x=\frac{5\pm\sqrt{41}}{4}

Step-by-step explanation:

We have been given an equation 2x^2-5x+1=3. We are asked to solve for x.

First of all, we will convert our given equation in standard form of equation as:

2x^2-5x+1-3=3-3

2x^2-5x-2=0

Now, we will use quadratic formula to solve for x.

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

x=\frac{-(-5)\pm\sqrt{(-5)^2-4(2)(-2)}}{2(2)}

x=\frac{5\pm\sqrt{25+16}}{4}

x=\frac{5\pm\sqrt{41}}{4}

Therefore, the solutions for our given equation are x=\frac{5\pm\sqrt{41}}{4}.

You might be interested in
HELP PLEASEE AND ANSWER MY OTHER QUESTIONS ASAP 5. Jesse rotated the triangle 90° clockwise about the origin to create figure
Molodets [167]

Answer:

its b cus hit dat hommie

Step-by-step explanation:

6 0
3 years ago
4/9 of the audience at a concert, 1/2 of the remainder are woman and the rest are children. If there are 26 boys and 9 girls, wh
Anna [14]
The amount is 1/7th. Your welcome.
6 0
2 years ago
Read 2 more answers
5. In the figure, . Solve for . Show your work.
natima [27]

Answer:

15

Step-by-step explanation:

6/10=9/x

cross multiply

6x=9*10

6x=90

x=90/6x=15

3 0
3 years ago
Question 17
Rufina [12.5K]

Answer:

698 fishes

Step-by-step explanation:

Generally, we can represent an exponential growth function as;

y = a•(1 + r)^t

originally, there were 3 fishes

The original value in this case means a = 3

After 6 weeks, there were 31

31 in this case is y

r is the increase percentage or rate

t is the time

So, we have it that;

31 = 3•(1 + r)^6

31/3 = (1 + r)^6

10.33 = (1 + r)^6

ln 10.33 = 6 ln (1 + r)

ln 10.33/6 = ln (1 + r)

e^0.3892 = (1 + r)

1 + r = 1.476

r = 1.476-1

r = 0.476 or 47.6%

So the growth percentage or rate is 47.6%

For 14 weeks, we simply have the value of t as 14;

So ;

y = 3•(1 + 0.476)^14

y = 3(1.476)^14

y = 698 fishes

8 0
2 years ago
What is .13 repeating as a fraction?
Irina18 [472]
13/99 is the fraction.
5 0
3 years ago
Other questions:
  • <img src="https://tex.z-dn.net/?f=5%3D%20x%5E%7B2%7D%20%2B2x" id="TexFormula1" title="5= x^{2} +2x" alt="5= x^{2} +2x" align="ab
    13·1 answer
  • The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in Carter's savings account (t) years after he
    13·1 answer
  • Sally either walks, cycles or drives to work. She walks about 15% of the time and drives about 3/5 of the time. What percentage
    6·1 answer
  • Help pretty please :) &lt;3
    11·2 answers
  • When multiplying two negative intergers what is the sign of the product
    13·1 answer
  • Red is a primary color - Violet is not!
    8·2 answers
  • Write a rule that tell how to use mental math to find the product 30,000 x 50,000​
    13·1 answer
  • This is not math but plssss help here are some points
    12·2 answers
  • Colin invests £1100 into his bank account.
    9·2 answers
  • Can u help please :)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!