Answer:
First. 115°
Second. 65°
Third. 65°
Fourth. 7
Fifth. 425.25
First
angle DAB = angle ADC (since this is an isosceles trapezoid)
Second
In a trapezoid adjacent angle are supplmentary (that is their sum is 180°)
180-115 is 65°
Third
(Same reason as second)
Fourth
The side 3x+4 is same as the opposite side
So 3x + 4 = 25
on solving you get x = 7 in
Fifth
area = 1/2 × 13.5 (20+43)
area = 1/2 × 13.5 × 63
Thus area is 425.25
Answer:
Options A and C are correct choices.
Step-by-step explanation:
We have been given an expression and we are asked to choose all the equivalent expressions from given choices.
Let us simplify our given expression.
Let us see which of our given choices matches with our answer.
A.
Upon using distributive property we will get,
Therefore, option A is a correct choice.
B.
Upon using distributive property we will get,
Since this expression is not equivalent to our answer, therefore, option B is not a correct choice.
C.
Upon removing parenthesis we will get,
Upon combining like terms we will get,
Therefore, option C is the correct choice.