7=x^2+20x+82
0=x^2+20x+75
What adds to 20 and multiplies to 75? 5 and 15.
x^2+5x+15x+75
x(x+5) 15(x+5)
(x+15) (x+5)
Zeroes are x= -5 and x= -15
You would have to solve this by Lxwxh.
25.4*19.05*76.2= 36870.89 centimeters
1 in= 2.54 centimeters
36870.89 centimeters*1 in/2.54 centimeters= 14516.09843 inches.
I hope this is helpful :)
Answer:
khing chong
Step-by-step explanation:
Answer:
6825
Step-by-step explanation:
From the equation, the series is a geometric series, such that
a = 5
r = 4
n = 6
sum of a geometric series is a(r^n - 1)/(r - 1)
therefore,
sum of the series is 5 x (4^6 - 1) / (4 - 1)
= 5 x (4096 - 1) / 3
= 5 x 4095 / 3
= 6825
the three numbers are 49,56 and 63.
