Answer:
dx/dt = 5√5/2
Step-by-step explanation:
Given:
dx/dt = 25 feet per second
According to Pythagoras theorem:
x² + 90² = y²
We know that x = 30 ft
So,
x² + 90² = y²
30² + 90² = y²
y = 30√10
So,
x² + 90² = y²
By taking differentiate:
2x dx/dt = 2y dy/dt
[x/y][dx/dt] = dy/dt
dx/dt = 5√5/2
Answer:
there was a decrease of 24 degrees.
Step-by-step explanation:
7-24=-17
She will have 6 and 1/4 inches of wood left. 23 3/4 - 30 is 6 1/4.
Answer:
y=7
Step-by-step explanation:
This is an easy one.
65/5= 13.
Therefore, she descended 13 feet per minute.
