Rearrange the equation by writing
x² + x - 90 = 0
x² + x = 90
x² + x + 1/4 = 90 + 1/4
Recall that (a + b)² = a² + 2ab + b². Then
x² + 2 • x/2 + (1/2)² = 361/4
(x + 1/2)² = 361/4
x + 1/2 = ± √(361/4)
x = -1/2 ± 19/2
x = 9 or x = -10
Slope intercept form : y= 10x -38
Point slope form : y-12 =10 x ( x-5)
Bearing in mind that, "t" is in years, thus, since there are 12 months in a year, then 9 months is 9/12 of a year.
Answer:
24 square inches
Step-by-step explanation:
use this formula and input the numbers for any square pyramid to find the surface area
Four hundred forty four thousand and four hundred four