Answer:
c < - 4
Step-by-step explanation:
- 4c - 1 > 15 ( add 1 to both sides )
- 4c > 16
Divide both sides by - 4 , reversing the symbol as a result of dividing by a negative quantity.
c < - 4
Answer:
x=-14
Step-by-step explanation:
think the number is x
According to the question
x/7+12=10
=>x+84=70 (multiply both side by 7)
=>x=70-84
x=-14
Answer:
x=6
Step-by-step explanation:
24=4x
divide both by 4
equals 6
Answer:
i cant see the whole page and what question
Step-by-step explanation:
I cant answer cause I cant see the full page
2x+3y=60 solve for x...
x=(60-3y)/2
p=xy^3, using x from above:
p=y^3(60-3y)/2
p=(60y^3-3y^4)/2
dp/dy=(180y^2-12y^3)/2
dp/dy=90y^2-6y^2
dp/dy=0 when:
90y^2-6y^3=0
6y^2(15-y)=0, we know y>0 so
y=15, since x=(60-3y)/2
x=7.5
(We solved it this way because otherwise you get quartic equations and cubic derivatives, yuck :P)
