Using the formula 64(0.5)^r ,
64(0.5)^0=64
64(0.5)^1=32
64(0.5)^3=16
64(0.5)^=8
answer:(1)
0.7(5x+15)=2.9 -(x+3)
3.5x+10.5=2.9-x-3
3.5x+10.5= -0.1- x
4.5x= -10.6
x= -2.3555...
Check:
0.7(5(-2.3555...) +15) = 2.9 -(x+3)
2.2555... = 2.2555...
Step-by-step explanation:
hope this image will help u
I have solved this myself
Answer:
x=-14
Step-by-step explanation:
In the first survery
![\frac{336}{500}](https://tex.z-dn.net/?f=%20%5Cfrac%7B336%7D%7B500%7D%20)
considered cola.
Assuming we can extrapolate this ratio, all we have to do is get the same ratio, but out of 2000 people.
![\frac{336}{500} * \frac{4}{4} \\ \frac{1344}{2000}](https://tex.z-dn.net/?f=%20%5Cfrac%7B336%7D%7B500%7D%20%2A%20%5Cfrac%7B4%7D%7B4%7D%20%20%5C%5C%20%20%5Cfrac%7B1344%7D%7B2000%7D%20)
The answer is 1344 people.