Answer:
![(b)\ 2x - 9 = -1](https://tex.z-dn.net/?f=%28b%29%5C%202x%20-%209%20%3D%20-1)
![(c)\ -2x + 12 = 4](https://tex.z-dn.net/?f=%28c%29%5C%20-2x%20%2B%2012%20%3D%204)
![(e)\ 2(x - 10) = -12](https://tex.z-dn.net/?f=%28e%29%5C%202%28x%20-%2010%29%20%3D%20-12)
Step-by-step explanation:
Required
Which equals ![x = 4](https://tex.z-dn.net/?f=x%20%3D%204)
![(a)\ 2x + 6 = 2](https://tex.z-dn.net/?f=%28a%29%5C%202x%20%2B%206%20%3D%202)
Collect like terms
![2x = 2 - 6](https://tex.z-dn.net/?f=2x%20%20%3D%202%20-%206)
![2x = -4](https://tex.z-dn.net/?f=2x%20%20%3D%20-4)
Divide both sides by 2
![x = -2](https://tex.z-dn.net/?f=x%20%3D%20-2)
![(b)\ 2x - 9 = -1](https://tex.z-dn.net/?f=%28b%29%5C%202x%20-%209%20%3D%20-1)
Collect like terms
![2x = -1 + 9](https://tex.z-dn.net/?f=2x%20%3D%20-1%20%2B%209)
![2x = 8](https://tex.z-dn.net/?f=2x%20%3D%208)
Divide both sides by 2
![x = 4](https://tex.z-dn.net/?f=x%20%3D%204)
![(c)\ -2x + 12 = 4](https://tex.z-dn.net/?f=%28c%29%5C%20-2x%20%2B%2012%20%3D%204)
Collect like terms
![-2x =- 12 + 4](https://tex.z-dn.net/?f=-2x%20%3D-%2012%20%2B%204)
![-2x =-8](https://tex.z-dn.net/?f=-2x%20%3D-8)
Divide both sides by -2
![x = 4](https://tex.z-dn.net/?f=x%20%3D%204)
![(d)\ 2(x + 2) = 10](https://tex.z-dn.net/?f=%28d%29%5C%202%28x%20%2B%202%29%20%3D%2010)
Divide both sides by 2
![x + 2 =5](https://tex.z-dn.net/?f=x%20%2B%202%20%3D5)
Collect like terms
![x = 5-2](https://tex.z-dn.net/?f=x%20%3D%205-2)
![x = 3](https://tex.z-dn.net/?f=x%20%3D%203)
![(e)\ 2(x - 10) = -12](https://tex.z-dn.net/?f=%28e%29%5C%202%28x%20-%2010%29%20%3D%20-12)
Divide both sides by 2
![x - 10 = -6](https://tex.z-dn.net/?f=x%20-%2010%20%3D%20-6)
Collect like terms
![x = 10 - 6](https://tex.z-dn.net/?f=x%20%3D%2010%20-%206)
![x = 4](https://tex.z-dn.net/?f=x%20%3D%204)
Hence, the equations with the required solution are:
![(b)\ 2x - 9 = -1](https://tex.z-dn.net/?f=%28b%29%5C%202x%20-%209%20%3D%20-1)
![(c)\ -2x + 12 = 4](https://tex.z-dn.net/?f=%28c%29%5C%20-2x%20%2B%2012%20%3D%204)
![(e)\ 2(x - 10) = -12](https://tex.z-dn.net/?f=%28e%29%5C%202%28x%20-%2010%29%20%3D%20-12)
Answer:
0.95
Step-by-step explanation:
The computation of the probability that a customer neither buys beer nor buys cigars is given below;
Given that, the probabilities are
The customers who purchased cigars be 0.02
The customers who purchased cigars + beer 0.50
And, the customers who purchased beer + cigars be 0.25
Now the probabilities where the customer purchased both
= 0.05 × 0.02
= 0.10
The probability where the customer purchased beer is
= 0.01 ÷ 0.25
= 0.04
Now the probability where a customer neither buys beer nor buys cigars is
= 1 - 0.02 + 0.04 - 0.01
= 0.95
is the study of algebraic equations on graphs
An example of the coordinate geometry is plotting point,lines and curves on
an x & Y axis thanks
Answer:
4.2
Step-by-step explanation:
simplify 12 and 20 to 6 and 10 then divide 6 by 10 and multiply by 7 to get the answer.
Answer:
The answer is when they work 4 hours x=4
Step-by-step explanation:
510 + 80x = 650 + 45x
80x - 45x = 650 - 510
35x = 140
x = 140/35
x = 4 hours