Answer:
c.13.7mi, A=33.3°, B=56.7°
Hello :
This number is : x
you have : x + 2x² = 6
2x² + x -6 = 0
Δ = b² -4ac a = 2 , b = 1 , c = 6
Δ = 1² - 4(2)(6) = 49 = 7²
X1 = (- 1 +7)/4 = 3/2
X2 = (-1-7)/4 = -2
Answer:
Step-by-step explanation:
5 men do 1 unit of work in 1 hr. 1 man does 1/5 unit of work in 1 hr. 2 men do 2/5 units of work in 1 hr. Therefore 2 men will take 5/2 hours to dig 1 hole and take 5/4 hrs to dig half a hole.
Answer:
see the explanation
Step-by-step explanation:
we have
decompose the number 224 in prime factors
substitute
Simplify
Answer:
3 and 4 are the only ones that are right angles.
Step-by-step explanation:
A^2+B^2=C^2