B is the correct answer. you can not multiply the first ratio be anything to make it equal the 2nd.
Answer:
Step-by-step explanation:
Measure of the length of an arc of a circle is given as:

Answer:
so the equation would look like this, x - 3 = 5
the number or x = 8
Step-by-step explanation:
8 - 3 = 5
Hope this helps! :)
solve for the indicated variable means isolate that variable.
Ans(7)
P=IRT (T)
that means solve for T or make T alone on one side of equal.
To do that we just need to move IR on the left side
So we get:

Hence final answer will be 
-----
Ans(8)
2x-3y=8 (y)
-3y=8-2x

------------
Ans(9)
V=LWH (L)

------------
Ans(10)
A=2(L+W) (w)
A=2L+2W
A-2L=2W


------------
Ans(11)
ax+by=c (y)
by=c-ax

------------
Ans(12)
(R)
PN=R-C
PN+C=R
R=PN+C