Ok so 18x3=8x+128+10x (multiply the 8 with the stuff in the parenthesis) now you combine like terms so 54 = 128+18x now you have to get the numbers together so you subtract 128 ~> -74 = 18x then you divide -74/18 which is about -4.1 so x= -4.1
Given parameters:
Quadratic expression:
x² - 6x + 7 = 0
Solve using quadratic formula;
x = 
From the equation;
a = 1, b = -6 and c = 7
Input the parameters and solve;
x = 
x = 
x = 
x = 
or 
x = 7 or -1
2banana=30
÷2 both sides
banana=15
4cherry=20
÷4 both sides
cherry=5
2apple=8
÷2 both sides
apple=4
15+5+4=
20+4=24
Given that there were 30 bacteria present originally.
a=30
Also given that the number doubles every one hour.
After one hour the count =2×30=60
Since the count doubles every hour it forms a G.P. with r=2
a,ar,ar2........
The count at the end of 2nd hour=ar^2=30×2^2=120
The count at the end of 4th hour=ar^4=30×2^4=480
The count at the end of 8th hour=ar^8n=30×2^8=7680
etc.
The count at the end of n^th hour=ar^n=30×2^n
Also, the equation y=30*(2)^8/1 give the same result y= 7680
Answer:
the answer is the second one
Step-by-step explanation:
have a great day :)
