Answer: c ≠ {-7, -3, 2, 5}
<u>Step-by-step explanation:</u>

= 
restrictions:
c + 7 ≠ 0 c - 2 ≠ 0 c - 5 ≠ 0 c + 3 ≠ 0
c ≠ -7 c ≠ 2 c ≠ 5 c ≠ -3
Answer:
is there supossed to be a picture?
Step-by-step explanation:
Answer:
x^2+7x=30
x^2+7x-30=0
Here a=1,b=7 and c=-30
Now,
Discriminant(D)=b^2-4ac
=7^2-4×1×(-30)
=49+120=169
By applying Quadratic formula
x=-b+- root over b^2-4ac÷2a
=-7+- root over D ÷ 2×1
=-7 +- root over 169 ÷2
=-7 +- 13 ÷2
Now,
Either x=-7+13÷2=6÷2=3
Or x=-7 -13 ÷2=-20÷2=-10
Hence, ans is (C) x=-10 and x=3
By definition, the surface area of the sphere is given by:
Where,
r: sphere radio
Clearing r we have:

Substituting values:

Then, the volume of the sphere is given by:
Substituting values we have:
Answer:
the volume of the sphere is:
