Try to understand this. Hope this help. Answer for 2 only.
Answer:
a.
b.
Step-by-step explanation:
Dimensions of rectangular piece of cardboard=
According to question
Length of box,l=10-2x
Breadth of box,b=6-2x
Height of box,h=x
a.
Volume of box=
Substitute the values in the formula
Volume of box=

b.Surface area of box=
Because the box has no lid
Substitute the values in the formula
Surface area of box=
Surface area of box=
Surface area of box=
Surface area of box=
Surface area of box, S(x)=
Answer:
180 texts
Explanation:
mutiply 92 by 0.10 and you'll get 9.2
So each text costs 10 cents.
Answer:
0.01707779886
Step-by-step explanation:
Just do 27/1581
Answer:
Since A={a,b}, then
. Remember that the Cartesian Product of two sets A, B is defined by
. Then
