Answer:
a ≈ 5.3
Step-by-step explanation:
Using Pythagoras' theorem
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + 6² = 8², that is
a² + 36 = 64 ( subtract 36 from both sides )
a² = 28 ( take the square root of both sides )
a = 
≈ 5.3 ( to the nearest tenth )
Answer:
d = √(258² - 151²) = 209.2 miles
Step-by-step explanation:
-k^2 - (3k - 5n) + 4n....when k = -1 and n = -2
-1^2 - (3(-1) - 5(-2) + 4(-2)
1 - (-3 + 10) + 4(-2)
1 - 7 - 8
-14 <=
Check the picture below.
bearing in mind that twin sides stemming from a common vertex, will make twin angles at the base, thus 74° has a twin.
