Answer:
It is an acute triangle.
Step-by-step explanation:
It would be much easier for you to see where I'm getting at if you draw a diagram.
Assume this triangle is labelled ABC where a = 14, b = 21, and c = 16.
cos A = (16^2 + 21^2 - 14^2)/(2(16)(21))
∠A = cos^-1(0.82291...)
∠A ≅ 34.6°
cos B = 16^2 + 14^2 - 21^2)/(2(16)(14))
∠B = cos^-1(0.024...)
∠B ≅ 56.8°
∠C = 180 - (∠A + ∠B)
∠C ≅ 56.8°
Since there is no right-angle nor is there an obtuse angle,
Therefore the triangle is an acute triangle.
Answer:
2.5 kilograms
Step-by-step explanation:
Since 2 kilograms would be 4.4 pounds, subtract 4.4 from 5.5.
Then, you'd get 1.1
So, since 1.1 is half of 2.2, you can assume that 1.1 is half of a kilogram.
Then, add half a kilogram with 2 kilograms to get 2.5 kilograms.
Hope this helps!
Step-by-step explanation:
let blue marbles= B
yellow marbles = Y
red marbles = R
Answer:
Step-by-step explanation:
Pythagorean Theorem:
BC= x
AB= 10 cm
AC= 8 cm
~
Now, Substitute
Square root x^2= x, √(36)=6
Therefore, the length of x = 6
~
The answer is 22. Work: n=3 and 3 to the second power would be 9 because 3x3=9 and 9+13=22. Hope I could help! Tell me if i’m wrong though!