Answer:
We can use linear system of equation with one variable.
Step-by-step explanation:
It is given that,Nina is 10 years younger than Deepak.
Deepak is 3 times as old as Nina.
<u>To solve this using linear equation</u>
Let d be the age of Deepak and n be the age of NIna
we can write,
n = (d - 10) ---(1)
d = 3n
d = 3(d - 10) --------(2)
d = 3d - 30
3d - d = 30
2d = 30
d = 30/2 = 15
n - d - 10 = 15 - 10 = 5
Therefore the age of Deepak = 15 and age of Nina = 5
Vsphere=(4/3)pi times r^3
r=radius
given that r=2
v=(4/3)pi2^3
v=(4/3)pi8
v=32/3pi cubic inches
about 10.66666pi cubic inches or hmm, roughly 31 cubic inches (guestimated in head)
A and C are the correct answer
Answer:
Step-by-step explanation:
