Hey there!
A dolphin swims 40 miles per hour. In feet, this is 211,200 because there’s 5,280 feet in a mile. Divide 211,200 by 60 to get 3,520. The dolphin travels 3520 feet a minute.
I hope this helps!
Answer:
Step-by-step explanation:
Consider triangle ABC with the base AC=36. Let the line DE be parallel to the line AC. If DE||AC, then triangles ABC and DBE are similar. If k is the scale factor of these triangles, then
Thus,
The area of the triangle ABC is
The area of the triangle DBE is
Since line DE divides triangle ABC in two equal area parts, we have that
and
Completing the squares tells us exactly what square root we will need to calculate our answer.
Using the formula below you can find these answers:
Does this make sense?
Answer:
5 = x
Step-by-step explanation:
5 divided by 2 = 2.5
12.5 divided by 2.5 = x = 5