Supply missing statements and missing reasons for the following proof.Given: 
and transversal p; 
is a right angleProve: 
is a right angleS1. 
and transversal p R1.S2. 
R2.S3. R3. Congruent measures have equal measures.S4. 
R4.S5. R5. Substitution Property of EqualityS6. R6. Definition of a right angle
What will be an ideal response?
R2. If 2 parallel lines are cut by a trans, corresponding angles are congruent.
S3. 
R4. Given
S5. 
S6. 
is a right angle
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Express the sum or difference as a product of sines and/or cosines.cos(4?) + cos(2?)
A. 2 sin(3?) sin ? B. 2 cos(3?) cos ? C. 2 cos(3?) sin ? D. 2 cos(3?)
Find the value of the missing number.
= -5
A. 10 B. -7 C. 7 D. -10
Fill in the blank with one of the words or phrases listed below. 
An algebraic expression is 
when all like terms have been 
.
A. simplified; constant B. simplified; combined C. constant; simplified D. combined; simplified
Write the equation of the graph after the indicated transformation(s). The graph of y = x2 is shifted 3 units to the left. This graph is then vertically compressed by a factor of 
and reflected across the x-axis. Finally, the graph is shifted 7 units downward.
A. y = - 
(x - 3)2 + 7
B. y = - 
(x + 3)2 - 7
C. y = 
(x - 3)2 - 7
D. y = - 
(x - 3)2 - 7