Answer
132 degrees
Step-by-step explanation:
Strategy: Find angle DEB and using that fact that DEB + DEF is 180 degrees to find angle DEF
The sum of the four angles of any quadrilateral is 360 degrees.
Since three angles are given, we can use that to find the fourth.
360-(147+93+72)=size of angle DEB. Solving, you get angle DEB is 48.
Also, knowing that segment BF is a straight line, it means that angle DEB + angle DEF is equal to a straight angle (180 degrees).
DEB+DEF=180
48+DEF=180
DEF=180-48=132 degrees.
Thus, angle DEF is equal to 132 degrees.
(-10)-3 to the second power is -19 as the answer.
Answer:
15
Step-by-step explanation:
the pattern is adding by three so 12+3=15
Answer:
204/100 = 51/25= 2 1/25 that is the answer
the required algebraic expression is: 
Step-by-step explanation:
We need to write the algebraic expression of the sum of a number z divided by three and the number
Let the number be z
a number z divided by three: 
the sum of a number z divided by three and the number:
So, the required algebraic expression is:
Keywords: Algebraic expression
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