First, you solve for m by adding the equations.
m+n=100
+ m-n=30
--------------
2m=130
m=65
Now plug in 65 for m into one of the original equations
65+n=100
n=35
You can double check by plugging them both in:
65+35=100 and 65-35=30
Hope that helps.
Answer:
355
Step-by-step explanation:
3
-5
=3*5³-5*2²
3*5³-5*2²=3*125-5*4
3*125-5*4=375-20
375-20=355
Answer:
Third option
O 100 cm
1m
Step-by-step explanation:
![100cm \div {10}^{2} = 1m \\ hope \: this \: helps.. \\ good \: luck](https://tex.z-dn.net/?f=100cm%20%5Cdiv%20%20%7B10%7D%5E%7B2%7D%20%20%3D%201m%20%5C%5C%20hope%20%5C%3A%20this%20%5C%3A%20helps..%20%5C%5C%20good%20%5C%3A%20luck)
Answer:
Step-by-step explanation:
<u>Total cost of plant:</u>
<u>Greg makes total of:</u>
- 25*(2 + 0.75*2) + 18*(2 + 0.35*2) + (60 - 25 - 18)*2*4/5 = 163.3
<u>Since Greg mare than cost, he has a profit and the amount is:</u>