Answer: The first
D: [-3,∞)
R: [-1,∞)
The second
D: [-3,2)
R:[-5,4]
Step-by-step explanation:
So you want to add lik terms first
group them together
I have gropued the like terms using brackets
[-2x+(x/4)]+[-6-3+90]=180
add lik terms
add the number terms
-6-3+90=81
[-2x+(x/4)]+[81]=180
subtract 81 from both sides
-2x+(x/4)=99
add 2x to both sides
x/4=99+2x
multipliy both sides by 4 to clear fraction
x=396+8x
subtract 8x from both sides
-7x=396
mulitply both sides by -1
7x=-396
divide both sides by 7
x=-396/7=-56 and 4/7
Answer:
12x^2+9
Step-by-step explanation:
(2x-3)(2x+4x-3)
(2x-3)(6x-3)
12x^2+9
Answer:
21,836
Step-by-step explanation: hope this helps :)
Answer:
50 miles per hour
Step-by-step explanation:
to find the speed you do the distance divided by the time and that makes the equation
450/9 which gives you the answer of 50 mph
