What is 13x + 4 and how do i solve it

Simplifying

12x2 + -13x + -4 = 0

Reorder the terms:

-4 + -13x + 12x2 = 0

Solving

-4 + -13x + 12x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(-1 + -4x)(4 + -3x) = 0

Subproblem 1

Set the factor '(-1 + -4x)' equal to zero and attempt to solve:

Simplifying

-1 + -4x = 0

Solving

-1 + -4x = 0

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

Add '1' to each side of the equation.

-1 + 1 + -4x = 0 + 1

Combine like terms: -1 + 1 = 0

0 + -4x = 0 + 1

-4x = 0 + 1

Combine like terms: 0 + 1 = 1

-4x = 1

Divide each side by '-4'.

x = -0.25

Simplifying

x = -0.25

Subproblem 2

Set the factor '(4 + -3x)' equal to zero and attempt to solve:

Simplifying

4 + -3x = 0

Solving

4 + -3x = 0

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

Add '-4' to each side of the equation.

4 + -4 + -3x = 0 + -4

Combine like terms: 4 + -4 = 0

0 + -3x = 0 + -4

-3x = 0 + -4

Combine like terms: 0 + -4 = -4

-3x = -4

Divide each side by '-3'.

x = 1.333333333

Simplifying

x = 1.333333333

Solution

x = {-0.25, 1.333333333

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)