If the sum of their lengths is 5,520 miles then River D is 2360 and River C is 3160
Answer:
42/50, 21/25
Step-by-step explanation:
84/100=42/50=21/25
Ur answer is c hope this helps
Answer:
x = ±20
Step-by-step explanation:
x^2 -1=399
Add 1 to each side
x^2 = 399+1
x^2 = 400
Take the square root of each side
sqrt(x^2) = ±sqrt(400)
x = ±20
The answer is y<span> = 4cos</span><span>x </span>