Answer:
x = StartFraction negative 5 plus or minus StartRoot 5 EndRoot Over 2 EndFraction
Step-by-step explanation:
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
equate the function to zero
so
substitute in the formula
therefore
x = StartFraction negative 5 plus or minus StartRoot 5 EndRoot Over 2 EndFraction
If you would like to know a number you can square and the answer is bigger than 400 but smaller than 500, you can calculate this using the following step:
20^2 = 400 < 21^2 = 441 < 22^2 = 484 < 500
There are two correct results: 21 and 22.
5/8 acre of land ... 1/4 hour
x acres of land = ? ... 1 hour
If you would like to know how many acres of land can the sprinkler system water in 1 hour, you can calculate this using the following steps:
5/8 * 1 = 1/4 * x
5/8 = 1/4 * x /*4
x = 5/8 * 4
x = 5/2 = 2.5 = 2 1/2 acres of land
The correct result would be 2 1/2 acres of land.