The picture in the attached figure
we know that
m∠BXA =

°

'
m∠CXB =

°

'
m∠CXA = ?
m∠CXA = m∠BXA + m∠CXB
m∠CXA =

°

' +

°

'
m∠CXA =

°

'
therefore
the answer ism∠CXA =
°
'
The value of a will be equal to
for the given expression.
<h3>What is simplification?</h3>
The process of reducing the complex mathematical expressions into the simplest form is called as the simplification.
here we have two expressions.

We can write the expression as:

Hence the value of a will be equal to
for the given expression.
To know more about Simplification follow
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Answer:
i dont know this one
Step-by-step explanation:
this one is confusing
Answer:
The answer would be 9
Step-by-step explanation:
Step 1: Our output value is 30.
Step 2: We represent the unknown value with $x$.
Step 3: From step 1 above,$30=100\%$.
Step 4: Similarly, $x=30\%$.
Step 5: This results in a pair of simple equations:
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
Step 7: Again, the reciprocal of both sides gives
Therefore, 30% of 30 is 9