Answer:
i think these are the same as the one i answered on ur other question
just not the number lines
Answer: it will take Doug's son 6 days if he works alone
Step-by-step explanation:
It takes dad three days to re-roof a house. If his son helps him the job can be done in two days. This means that the time that the job takes will reduce because they worked together.
Let x = the number of days it will take Doug's son if he works alone,
Doug's unit rate of working will be 1/3
Doug son's unit rate of working will be 1/x
Their unit rates are additive because they will work simultaneously. Each will work at his own unit rate.
Combined unit rates will be
1/3 + 1/x = (x + 3)/3x
Since it will take 2 days if they work together, their combined unit rate will be 1/2
(x + 3)/3x = 1/2
2(x + 3) = 3x
2x + 6 = 3x
3x - 2x = 6
x = 6 days
Answer:
The maximum distance is 17.5 miles
No she can't make to the airport.
Step-by-step explanation:
Given the cab charges $0.8 per mile and $2 for tolls.
let the miles travelled by melissa be x.
The total charge is $![(0.8*x+2)](https://tex.z-dn.net/?f=%280.8%2Ax%2B2%29)
Now given that she can spend a maximum of $16
so the inequality is
![0.8*x+2\leq 16](https://tex.z-dn.net/?f=0.8%2Ax%2B2%5Cleq%2016)
![0.8*x\leq 14](https://tex.z-dn.net/?f=0.8%2Ax%5Cleq%2014)
![x\leq \frac{14}{0.8}](https://tex.z-dn.net/?f=x%5Cleq%20%5Cfrac%7B14%7D%7B0.8%7D)
![x\leq 17.5](https://tex.z-dn.net/?f=x%5Cleq%2017.5)
Therefore the maximum distance she can travel is 17.5 miles
Since the distance to airport is 25 miles which is greater than 17.5 miles she cannot afford the cab.
Answer: first box 12. Next box trinomial
Add the exponents
Step-by-step explanation:
The given system of equation has no solution.
<h3>What is a System of Equation ?</h3>
The set of equation that have common solution is called the system of equation
The equation given are
- 7x + 7y = 7
2x - 2y = -18
On simplifying the equations
- x + y = 1
x - y = -9
On adding these equations there is no solution
as
![\rm \dfrac {a_1}{a_2 } = \dfrac{b_1} {b_2} \ne \dfrac{c_1}{c_2}](https://tex.z-dn.net/?f=%5Crm%20%5Cdfrac%20%7Ba_1%7D%7Ba_2%20%7D%20%3D%20%5Cdfrac%7Bb_1%7D%20%7Bb_2%7D%20%5Cne%20%5Cdfrac%7Bc_1%7D%7Bc_2%7D)
The given system of equation has no solution.
To know more about System of Equation
brainly.com/question/12895249
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