You do: 1/2 job/hr
Your friend does: 1/3 job/hr
Together: (1/2 + 1/3) job / hr
= (3/6 + 2/6) job/hr
= 5/6 job/hr .
Since you do 5/6 job/hr, the corresponding
inverse unit rate is
6/5 hr/job
= 1 and 1/5 hr/job
= 1.2 hours/job
= 1 hour 12 minutes per job.
Answer:
He would spend $14.40 on 12 bottles.
The system of equations can be used to find the cost of a night's stay and the cost of a meal is:
2n + 5m = $395
5n + 11m = $959
<h3>
Simultaneous equations</h3>
Simultaneous equations are two or more groups of equations. These equations have to be solved together at the same time in order to determined the required valued. The two above equations have to be solved in order to determine the cost of a night's stay and the cost of a meal.
The methods of determining the required values are:
- Elimination method
- Graph method
- Substitution method
To learn more about simultaneous equations, please check: brainly.com/question/25875552
The volume of a sphere is calculated through the equation,
V = 4πr³ /3
where r is the radius of the given.
If the radius is 2.86, we can substitute the value to the equation above such that,
V = 4π(2.86)³ / 3 = 97.99π m³
When the radius is 0.09 m plus the given radius then,
V = 4π(2.86 - 0.09)³ / 3 = 89.03π m³
The difference between the volumes is equal to,
difference = 97.99π - 89.03π m³ = 8.96π m³
Dividing this to the original volume and multiplying by 100%,
percentage = (8.96π/97.99π) x 100%
percentage = 9.14%.
Hence, the expected percent uncertainty is equal to 9.14%.
