Answer:
Step-by-step explanation:
gas costs 2.50 per gallon....if he wants to buy 20 gallons, then he is gonna have to spend : (2.50 * 20) = $ 50 <==
Answer:
a = - 3, b = 5
Step-by-step explanation:
To rationalise the denominator multiply the numerator/ denominator by 
= 
= 
= 
= 5
- 3
= - 3 + 5
← in the form a + b
with a = - 3 and b = 5
Assuming you need the integral expressing the volume of

, the easiest setup is to integrate with respect to

first.
This is done with either


Thanks to symmetry, integrating with respect to either

or

first will be nearly identical.
First, with respect to

:


Next, with respec to

:

Answer:
324 km²
Step-by-step explanation:
The prism shown is a square pyramid
The volume of a square pyramid can be calculated by using this formula

where l = length of base, w = width of base and h = height
We are given the following dimensions...
length of base = 9 km
width of base = 9 km
height = 12 km
To find the volume of the pyramid, we plug in these given values into the formula
Hence,

V = 324
So all the angles on one side should equal 180.
50+55= 105
180-105=75
12x+3=75
12x=72
12*6=72
x=6