Ok so what is the question..... question in detail
Answer:
No.
Step-by-step explanation:
and
could be irrational and
be rational.
Example:
Let
and
.
And
and 0 is rational.
Is it just me or is it just that I can't see anything
Answer:
79.4° to the nearest tenth of a degree
Step-by-step explanation:
You are trying to find the angle opposite the side of length 27.
Let the length of that side be c and a and b be the lengths of the other two sides and let C be the measure of the angle you are looking for
Using the law of cosines



729 = 361 + 529 - 874cosC
729 = 890 - 874cosC
-161 = -874cosC
-161/-874 = cosC
.1842105.... = cosC
C = arccos .1842105.... = 79.4° to the nearest tenth of a degree
Answer:
x² + 3x - 10
Step-by-step explanation:
Each factor in the second factor is multiplied by each term in the first factor, that is
x(x - 2) + 5(x - 2) ← distribute each parenthesis
= x² - 2x + 5x - 10 ← collect like terms
= x² + 3x - 10