ANSWER
The algebraic expression that is a polynomial with a degree of 2 is

EXPLANATION
The degree of a term of a polynomial is the total sum of the exponents of the variables in each term.
The highest degree of the polynomial is considered the degree of the polynomial.
For first option,

the highest degree is 3.
The second option is,

This polynomial also has a degree of 3.
The third option is,

This last option has a degree of 2.
Therefore the correct answer is option C.
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Answer:
If two figures have the same size and shape, then they are congruent. so if they have the same shape and size even if they are flipped or mirrored they are congruent.
Step-by-step explanation:
The term congruent is often used to describe figures like this, the pictire below. if you look up congruent shapes and look at many examples that will definitely help you understand alot more better what congruent means.
5,380,000 I'm pretty sure. Hope it helped! ❤
H = 70ft.
P = 35ft.
B = ?
H^2 = P^2 + B^2
70×70 = (35×35) + B^2
B^2 = 4900-1225
B = √3675
B = 35√3 ft.