Answer:
A = 14.2/1.1 hours
B = 5.091 hours
Step-by-step explanation:
Formulate 2 simultaneous equations
5.7A + 6.8B = 111.40..........(1)
A +B =18...............................(2)
Multiply each item in (2) by 5.7 to get
5.7A + 5.7B = 97.2............(3)
subtract (1) - (3) on each side
5.7A -5.7A + 6.8B - 5.7B = 111.40 -97.2
1.1B = 14.2
B = 14.2 /1.1
to get A use equation (2)
A = 18 - B
A = 18 - 14.2/1.1 = 5.091
Answer:
90x+10y
Step-by-step explanation:
Add 89 and 1
Add 5 and 5
90x+10y in this order
Answer:
−
48828125
Step-by-step explanation:
you can use a calculator for algebra
Answer:
(2w+2)(w+8) ≤ 100
Step-by-step explanation:
X>7
https://quickmath.com/webMathematica3/quickmath/inequalities/solve/basic.jsp#c=solve_stepssolveinequ...
