Answer:
e = 10
Step-by-step explanation:
9e+4=-5e+14+13e
Combine like terms
9e+4=14+8e
Subtract 8e from both sides
9e-8e+4=8e-8e +14
e +4 = 14
Subtract 4 from each side
e+4-4 = 14-4
e = 10
Answer:
0.27
Step-by-step explanation:
Answer:
z-9
Step-by-step explanation:
Right now, John is z-5. z-5 - 4 is equal to z -9.
Answer:
143.75X = Y
Explanation:
Since I had to hire a plumber to come fix a leaky pipe, and the first day he worked 3 hours and charged me $ 450, while the next day he came back and finished the job working another 5 hours charging me $ 700, to find the equation that represents the cost, and, after x hours of working, the following calculation must be performed:
(450 + 700) / (3 + 5) = Y
1150/8 = Y
143.75 = Y
Thus, the hourly cost of the plumber's work was $ 143.75.
Answer:
Step-by-step explanation:
The first equation rearranges to y = 2-x.
The second rearranges to y=-3x-5.
So 2-x = -3x-5
2+2x=-5
2x=-7
x= - 7/2, meaning y=11/2.