Answer:
28.28
Step-by-step explanation:
Using Pythagoras' identity on the right triangle
d² = 20² + 20² ← Pythagoras' identity
= 400 + 400 = 800 ( take the square root of both sides )
d = 
≈ 28.28 ( to 2 dec. places )
Answer:
The third one
Step-by-step explanation:
It cannot be the first 2 as the corners wouldn't line up. It cannot be the last one as B and R are not the same angles
Answer:
Step-by-step explanation:
There are several approach to solving a quadratic equation; factorization, completing the square, the use of 'the almighty formula etc. Though i didn't see the steps you followed in solving, but from your answer, it is obvious you made good attempt but something is missing, your answer should be (5+√57)/2 or (5-√57)/2
B, because it actually has the number of sponsors and is a positive slope.
We can express this number in the standard form, which is simply 15xyz+10xy+5x. Alternatively, we can factor a 5 or an x out, receiving 5(3xyz+2xy+x) or x(15yz+10y+5). However, the most effective factorization is to factor out 5x, for a result of 5x(3yz+2y+1).
