Solve ax – 5 = b for a

question 1 options:

a)

x(b+5)

b)

b−5x, x≢0
b
-
5
x
,

x
≢
0

c)

b+5x, x≢0
b
+
5
x
,

x
≢
0

d)

x(b-5)

Step-by-step explanation:

To solve for "" in the equation: , we apply operations on both sides of the equality such that lead us to isolate the value we need to solve for (in our case ) on one side of the equal sign.

Let's start by "adding"  5 to both sides, so we eliminate it on the left, proceeding to isolate the term that contains :

now proceed to eliminate the factor "x" that multiplies "", by dividing both sides by "x":

has been isolated on one side of the equal sign, so this is the expression we got for it:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92