Wilma can mow the lawn in 4 hours. If Kyle helps her with another mower, the lawn can be mowed in 3 hours. How many hours would it take Kyle if he worked alone?

12 hours

Step-by-step explanation:

Let w = Wilma alone

Let k = Kyle alone

Let t = Working together

Given the following data;

Time it took Wilma = 4 hours

Time it took them together = 3 hours

Time it took Kyle = x

To find the time it will take Kyle, we would use this arithmetical expression;

Substituting into the equation, we have;

Lowest common denominator (LCD) = 12x

Multiplying all through by "12x" we have;

Simplifying the equation, we have;

Rearranging the equation, we have;

x = 12 hours.

Therefore, it would take Kyle 12 hours to mow if he worked alone.

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x