Use this sum of cubes to help you
<span> (a^3+b^3)= (a+b)(a^2-ab+b^2)
</span>
a=3x and b=7 Plug into equation above and solve for x now you will get one real answer and two imaginary.
Do you understand or need more help?
Answer:
this is what is get out of it they want you to divide 20000 by 1.7%
7-3(4x-8)<6x+12-9x
7-12x+24<6x+12-9x
-12x-6x+9x<12-7-24
-9x<-19
-x<-19/9
x>19/9
Answer: x>19/9 or (19/9 , +∞)
Answer:
<u>x = 38</u>
Step-by-step explanation:
180 - 68 = 112
122 + 20 + x = 180
142 + x = 180
180 - 142 = x
x = 38
Have a nice day!
Answer:
r(-2) = -5 , r(0) = -7 , r(5) = -12
Step-by-step explanation:
Plug in the numbers for x and then solve. : )
r(-2) = - (-2) - 7
r(-2) = 2 -7
r(-2) = -5
r(0)= -0 -7
r(0)=0-7
r(0) = -7
r(5) = -5 - 7
r(5) = -12