Answer:

Step-by-step explanation:
Plug in -3 for n in the equation:


Simplify. Remember to follow PEMDAS. First, solve the power:

Next, combine like terms. Note that if there are two negative signs directly next to each other, it becomes a positive sign. Add:

Your answer: 
Answer:
V=1472.6
Step-by-step explanation:
Volume of a cone=π*r^2*h/3
The volume of an oblique shape is the same as a non oblique shape. Also, 15/2 is our radius
V=π*r^2*h/3
V=π*7.5^2*(25/3)
V=pi*56.25*8.33333...
V=1472.62155637
V=1472.6
Answer:

Step-by-step explanation:
Remember that

Let
x ----> the total cost of the books
we know that
The total cost of the book multiplied by 0.65 must be equal to $438.75
so
The linear equation that represent this situation is

solve for x

Note that a:b = c:d is the same as a/b = c/d
y:1.5=0.2:0.75 same as y/1.5 = 0.2/0.75
y = 0.4
x: 1 2/3=y:3 1/3 same as x/1 2/3 = y / 3 1/3
x = y/2 = 0.2
Answer:
{1,4}
Step-by-step explanation:
A={3,6,9}
B={2,3,5,7}
C={1,2,3,4,5}
AUB={2,3,5,6,7,9}
(AUB)'={1,4,8,10}
(AUB)'⋂C={1,4}