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
notsponge [240]
4 years ago
15

How to solve 3p^2=-2p+4

Mathematics
1 answer:
harkovskaia [24]4 years ago
6 0

Answer:

Step-by-step explanation:

Simplifying

3p2 + -2p = 4

Reorder the terms:

-2p + 3p2 = 4

Solving

-2p + 3p2 = 4

Solving for variable 'p'.

Reorder the terms:

-4 + -2p + 3p2 = 4 + -4

Combine like terms: 4 + -4 = 0

-4 + -2p + 3p2 = 0

Begin completing the square.  Divide all terms by

3 the coefficient of the squared term:

Divide each side by '3'.

-1.333333333 + -0.6666666667p + p2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.

-1.333333333 + -0.6666666667p + 1.333333333 + p2 = 0 + 1.333333333

Reorder the terms:

-1.333333333 + 1.333333333 + -0.6666666667p + p2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000

0.000000000 + -0.6666666667p + p2 = 0 + 1.333333333

-0.6666666667p + p2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333

-0.6666666667p + p2 = 1.333333333

The p term is -0.6666666667p.  Take half its coefficient (-0.3333333334).

Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.

-0.6666666667p + 0.1111111112 + p2 = 1.333333333 + 0.1111111112

Reorder the terms:

0.1111111112 + -0.6666666667p + p2 = 1.333333333 + 0.1111111112

Combine like terms: 1.333333333 + 0.1111111112 = 1.4444444442

0.1111111112 + -0.6666666667p + p2 = 1.4444444442

Factor a perfect square on the left side:

(p + -0.3333333334)(p + -0.3333333334) = 1.4444444442

Calculate the square root of the right side: 1.201850425

Break this problem into two subproblems by setting

(p + -0.3333333334) equal to 1.201850425 and -1.201850425.

Subproblem 1

p + -0.3333333334 = 1.201850425

Simplifying

p + -0.3333333334 = 1.201850425

Reorder the terms:

-0.3333333334 + p = 1.201850425

Solving

-0.3333333334 + p = 1.201850425

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '0.3333333334' to each side of the equation.

-0.3333333334 + 0.3333333334 + p = 1.201850425 + 0.3333333334

Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000

0.0000000000 + p = 1.201850425 + 0.3333333334

p = 1.201850425 + 0.3333333334

Combine like terms: 1.201850425 + 0.3333333334 = 1.5351837584

p = 1.5351837584

Simplifying

p = 1.5351837584

Subproblem 2

p + -0.3333333334 = -1.201850425

Simplifying

p + -0.3333333334 = -1.201850425

Reorder the terms:

-0.3333333334 + p = -1.201850425

Solving

-0.3333333334 + p = -1.201850425

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '0.3333333334' to each side of the equation.

-0.3333333334 + 0.3333333334 + p = -1.201850425 + 0.3333333334

Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000

0.0000000000 + p = -1.201850425 + 0.3333333334

p = -1.201850425 + 0.3333333334

Combine like terms: -1.201850425 + 0.3333333334 = -0.8685170916

p = -0.8685170916

Simplifying

p = -0.8685170916

Solution

The solution to the problem is based on the solutions

from the subproblems.

p = {1.5351837584, -0.8685170916}

You might be interested in
The revenue for a company producing widgets is given by y = -20x2 - 50x + 200, where x is the price in dollars for each widget.
lisov135 [29]

Answer:

The  price is   x =  $2.779

Step-by-step explanation:

From the question we are told that

  The  revenue is  y = - 20x^2  - 50 x + 200

   The cost of production is  y = 30 x - 10

Generally at break even point the cost of production is equal to the  revenue

So

      -20x^2 -50x + 200 =  30x-10

=>   20x^2 +20 -210 = 0

Using the quadratic formula to solve this equation we have that

       x =  $2.779

     

6 0
3 years ago
Read 2 more answers
Which statement best expresses the total value (v) of a stash of cash of (n) bundles of $15.00 each?
Bess [88]
A..................................................s..........................................................s
7 0
3 years ago
Read 2 more answers
An expression is shown below: r50 r2 which statement is true about the expression? it is irrational and equal to 2r13 it is irra
Irina18 [472]
I think it is rational and equal to 6
7 0
3 years ago
if you're currently making $6.75 per hour and you were offered a new job that pays $7.47 per hour, what will be your percent of
worty [1.4K]

Answer:

10.67% increase

Step-by-step explanation:

We can find percent increase with (difference/original) x 100

7.47 - 6.75

= 0.72 (difference)

(0.72/6.75) x 100

= 10.67% increase

5 0
3 years ago
Help with quadratic graphs asap!
zlopas [31]

x= -0.25 and 1.25

x = -0.5 and  1.5

x = 0 and 1

x = -0.375 and 1.625

Step-by-step explanation:

Given equation of the curve is

y = 4x^2 -4x-1

(i)

First equation 4x^2 -4x-1 =0

Here y = 0

In  x-axis the value of y = 0

The graph cuts the x-axis at(-0.25,0) and (1.25,0)

So, x= -0.25 and 1.25

(ii)

4x^2 -4x-1 =2

here y = 2

The line y= 2 cuts the curve at (-0.5,2) and (1.5,2)

So, x = -0.5 and  1.5

Given equation of the curve is

y= 3x^2-3x -1

(i)

3x^2-3x +2 =2

\Leftrightarrow  3x^2-3x -1 = -1

Here y = -1

The line y = -1  cuts the curve at (0,-1) and (1,-1)

So x = 0 and 1

(ii)

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

Here y = x+1

The line y -x =1 cuts the curve at (-0.375,0.5) and (1.625,2).

So x = -0.375 and 1.625

3 0
3 years ago
Other questions:
  • Property of addition and multiplication that deals with order. HELP
    9·1 answer
  • Harriet made a list of all her monthly expenses. What is Harriet’s total cost for housing in a month? total housing = $ eating o
    15·1 answer
  • The pilot of a Coast Guard patrol aircraft on a search mission had just spotted a disabled fishing trawler and decided to go in
    13·1 answer
  • The perimeter of a rectangle is 30 cm. If one of its sides is decreased by 3 cm and the other side is increased by 5 cm, the are
    8·1 answer
  • Help please! This is super urgent!!!!!
    5·2 answers
  • Carmen is making gift boxes for her friends. It takes her 10 minutes to pack a 4-pound treat box, and it takes her 15 minutes to
    9·1 answer
  • Subtract 7 3/4 - 3 1/8. What's the answer?
    12·2 answers
  • If a 6-foot man casts an 8-foot shadow, how tall is a tree that casts a 24-foot shadow?
    7·1 answer
  • Х
    8·1 answer
  • find the circumference of a circle with radius 2 cm. Dont forget units in your answer. use π=3.14 in your answer
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!