5t-0.2t^2=30

Simple and best practice solution for 5t-0.2t^2=30 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 5t-0.2t^2=30 equation:


Simplifying
5t + -0.2t2 = 30

Solving
5t + -0.2t2 = 30

Solving for variable 't'.

Reorder the terms:
-30 + 5t + -0.2t2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + 5t + -0.2t2 = 0

Begin completing the square.  Divide all terms by
-0.2 the coefficient of the squared term: 

Divide each side by '-0.2'.
150 + -25t + t2 = 0

Move the constant term to the right:

Add '-150' to each side of the equation.
150 + -25t + -150 + t2 = 0 + -150

Reorder the terms:
150 + -150 + -25t + t2 = 0 + -150

Combine like terms: 150 + -150 = 0
0 + -25t + t2 = 0 + -150
-25t + t2 = 0 + -150

Combine like terms: 0 + -150 = -150
-25t + t2 = -150

The t term is -25t.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25t + 156.25 + t2 = -150 + 156.25

Reorder the terms:
156.25 + -25t + t2 = -150 + 156.25

Combine like terms: -150 + 156.25 = 6.25
156.25 + -25t + t2 = 6.25

Factor a perfect square on the left side:
(t + -12.5)(t + -12.5) = 6.25

Calculate the square root of the right side: 2.5

Break this problem into two subproblems by setting 
(t + -12.5) equal to 2.5 and -2.5.

Subproblem 1

t + -12.5 = 2.5 Simplifying t + -12.5 = 2.5 Reorder the terms: -12.5 + t = 2.5 Solving -12.5 + t = 2.5 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + t = 2.5 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + t = 2.5 + 12.5 t = 2.5 + 12.5 Combine like terms: 2.5 + 12.5 = 15 t = 15 Simplifying t = 15

Subproblem 2

t + -12.5 = -2.5 Simplifying t + -12.5 = -2.5 Reorder the terms: -12.5 + t = -2.5 Solving -12.5 + t = -2.5 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + t = -2.5 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + t = -2.5 + 12.5 t = -2.5 + 12.5 Combine like terms: -2.5 + 12.5 = 10 t = 10 Simplifying t = 10

Solution

The solution to the problem is based on the solutions from the subproblems. t = {15, 10}

See similar equations:

| 4x+1.3+6x+1.1=180 | | (64)^1/3x(128)^2/7= | | 11x=40-9x | | 8x+34=3x+8 | | 8x+34+3x+8=32 | | 5t-0.4t^2=60 | | 2(2p+4)=2(3p-2) | | 5n-0.4n^2=30 | | 3x-7+4x+54=180 | | 0=140-96x+12x^2 | | 3x+(2+4-5)+3(X-7)=9 | | r^2+5r+6=2 | | (-4/9)x3/5x(-9/10) | | 5p-4=26 | | 0.3x+9.1=10 | | √4/49 | | X+.13x=1500 | | -4+(-12)+3= | | 25=40+3y | | x^2+y^2-14x+6y+33=0 | | 3w^2-1=6w | | P+P+N=14 | | 256x^4=1 | | (2a/3-3/2a)^6 | | ((2a/3)-(3/2a))^6 | | [4a^4/2a^2]^3 | | 13x/2x^2-7=1 | | 10.8x+46.12=-9.2x+45.22 | | 13x/2x^2 | | 6(3m-6)= | | 128x+(1-x)*18= | | 128x+1-x*18= |

Equations solver categories