Answer:
Step-by-step explanation:
2x²+8=80
2x²=80-8=72
x²=72/2=36
x=±√36
x=±6
so x=6 is one solution other is x=-6
Answer:
a

b

c

Step-by-step explanation:
The number of vehicles available is 
The number of vans is k = 5
The number of cars is n = 13
Generally P(E) is mathematically represented as

=> 
=> 
Generally P(F| E) means the probability that the second vehicle assigned is a van given that the first one selected is a van this mathematically calculated as



Generally
is also mathematically represented as

=> 
=> 
=>
Answer:
Required,


Step-by-step explanation:
Given volume and depth respectively,
and 
To find length and width of the rectanglular swiming pool we know,
Volume=length
height
depth.
Let depth=D=x-3, length=L, width=W, then



After divide we will get
with remainder -144.
Thus,

Now to find root of,

Thus,


Answer:
y=1
Step-by-step explanation:
Answer:
3rd row
Step-by-step explanation:
there were multiple mistakes there ngl but out of the amswers i saw it should be that brianna should habe divided