<span>(38-63)×6÷Z
=</span><span>(38-63)×6÷84
=-25</span>×6÷84
=150
=1 66/84
= 1 33/42
<span>The
associative rule is a rule about when it's safe to move parentheses
around. You can remember that because the parentheses determine which
expressions you have to do first--which numbers can associate with each
other. It looks like this:
For addition: (a + b) + c = a + (b + c)
For multiplication: (ab)c = a(bc)
The commutative property is about which operations you can do backward
and forward. You can remember this by thinking of people commuting to
work: they go to work every morning, then they repeat the same operation
backward when they commute home. It looks like this:
For addition: a + b = b + a
For multiplication: ab = ba
Finally, the distributive property tells you what happens when you
distribute one operation against another kind in parentheses. It looks
like this:
a * (b + c) = ab + ac
In other words, the a is "distributed" over the b and c.
Of course, you can make these work together:
a * (b + (c + d))
= a * ((b + c) + d) (by the associative property)
= a * (d + (b + c)) (by the commutative property)
= ad + a (b + c) (by the distributive property)
= ad + ab + ac (by the distributive property again).
Hope this helps. </span>
Insufficient data..u need to give the perimeter though!
Answer:
Option D is correct.
The measure of 
Step-by-step explanation:
is isosceles and 
and 
are base angles.
Isosceles Triangle:
A triangle with two equal sides, and two congruent base angles that means the angles are equal
By the definition, the base angles are equal i.e, 
Since, YZ bisects 
Angle Bisector theorem: An angle bisector is a line or ray that divides an angle into two equal angles
then, 
or
Substitute the value of 
;
The sum of measures of these three angles of triangle WXY is equal to the 180 degree.
In triangle WXY we have;
Substitute the value of 
and 
in above formula:
or
Simplify:
Combine like terms ;
or
Simplify;
Substitute the value of x in 
;
Therefore, the measure of
