Answer:
The given expression is simplified as 
Step-by-step explanation:
Here,the given expression is (x+9)(x -9)
Using the ALGEBRAIC IDENTITY:

Now, here in the given expression (x + 9)(x -9)
Comparing it the left side of the identity,
we get a = x
and b = 9
The right side of the equation is 
Substituting the value of a and b, we get
⇒ 
= 
Hence, the given expression is simplified as 
Answer: The measure of Angle 2 = 148°
Step-by-step explanation:
Given: The measure of Angle 2 is twelve less than five times the measure of Angle 1.
Let the measure of Angle 1 = x
Then, measure of Angle 2 = 5x-12
Since both the angles form linear pair, so their sum = 180° [linear pair of angles must add up to 180°.]
Then, x+ (5x-12) = 180
⇒ x+ 5x-12= 180
⇒ 6x-12= 180
⇒ 6x= 180+12
⇒ 6x= 192
⇒ x= 32 [divide both sides by 6 ]
So, measure of Angle 2 = 5(32)-12 = 160-12 = 148°
Hence, the measure of Angle 2 = 148°
Answer:
Step-by-step explanation:
Given
Possible dimension error is 
length of box 
Width 
height 
Volume V is given by


and it is given

since error always add therefore


Propagated error is 
relative error



Answer:
185
Step-by-step explanation:
if it is 5 less then twice the number of the children's and the children's tickets you are going to add 95 +95= 190 then subtract 5 190-5=185