Answer:
19×2 is the answer I think so
Answer:
a=2 , b= (-1)
Step-by-step explanation:
8a-4b=20/×(-2)
5a-8b=62
-16a+8b= -40
5a-8b=62
now -8+8=0 right? so the only parameter that we have is a.
-16a+5a= -40+62
11a = 22/(÷11)
a=2
in order to find b, we will replace a with its value in one of the original equations (it doesn't matter which one you will choose).For instance, I chose the first one.
8×2-4b=20
-4b=20-16
-4b=4/÷(-4)
b= -1
Answer:
In 50 years Population is 96000 people.
Step-by-step explanation:
Let population be x
In the first 10 years
Population becomes 2x
In 20 years it becomes 4x
In 10n years it becomes 2^n x
Therefore
for n= 5
x = 3000
Population is 2⁵ (3000)
= 32(3000)
= 96000
Population becomes 96000
Hope it helps...
You need to move your contents e.I. 3,4,5 and your variables e.I.2x, 5y, 2z first