Answer:
and
the mistake was in calculating
let's solve first.
Step-by-step explanation:
if
, substitute the
in the equation
as

solve the equation in parentheses :
multiply
by
it will equal to: 
now we want to let all unknown digits alone, so we will take
to the other side with a different sign it will be as:

now we will solve it:
at this part, the given equation was wrong in the paper.
we don't want the digit to be negative so we will do it like this:

now that we found
we will substitute it to find
:

overall the mistake was in calculating
instead of putting
he/she put a different sign in front of the digit like :
so when he/she flipped
it became positive and instead of subtracting he/she added it.
First, multiply both sides by 1000.
1000*c = w*t*c
Since c is on both sides, they cancel each other out
1000 = w*t
Divide both sides by w.
1000/w = t
Answer:

Step-by-step explanation:
The distance between two points
is given by
.
Here
are the vertices of a triangle.

Longest side

Hence this is an acute triangle.
Answer:
3
Step-by-step explanation:
I think its three i dont do alot of this but yea
Answer:
I think it is a 160o Angle
Step-by-step explanation: