Answer:14
Step-by-step explanation:
Please be certain to use " ^ " to denote exponentiation:
3x^2 + 4x – 5, 7x^2 + x + 9, 4x^2 - 3x
First, perform this subtraction:
7x2 + x + 9
-(3x2 + 4x – 5)
-----------------------
4x^2 - 3x + 14
Next, subtract 4x^2 - 3x from the above result:
4x^2 - 3x + 14
-(4x^2 - 3x)
------------------------
14 (answer)
Answer:
The answer for 5x - 4 > 12 is B
Step-by-step explanation:
2/3(120) = 240/3 = 80 do not drink
4/5(120) = 480/5 = 96 do not smoke
72 do not smoke or drink
96 - 72 = 24 do not smoke
80 - 72 = 8 do not drink
72 do not do either
120 - (24 + 8 + 72) = 120 - 104 = 16 drink and smoke
Hey there! I'm happy to help!
Here is our equation.
3x+4=19
We subtract 4 from both sides.
3x=15
We divide both sides by 3.
x=5.
Have a wonderful day! :D
a = hours worked by the first mechanic
b = hours worked by the second mechanic.
since the first mechanic charges $55 per hour, then for "a" hours that'd be a total of 55*a or 55a, likewise, for the second mechanic that'd be a total charge of 80*b or 80b.
we know all hours combined are 15, so then a + b = 15.
we also know that all charges combined are $950, so 55a + 80b = 950.
