She walks 3 3/10 mph
In 1/3 an hour she walks 2 1/5 : 2 = 11/10
Answer:
the y intercept is 4
and frm that point to another spot on the line you go DOWN one unit (negative)
and two units to positive (to the right) thus the slope is - 1 (down) and 2 positive to the right
-1/2 = slope
y = -1/2 + 4
Step-by-step explanation:
Answer: B is the answer
Step-by-step explanation:
Answer:
43756
Step-by-step explanation:
Multiply
Given:
The edge length of a cube is changing at a rate of 10 in/sec.
To find:
The rate by which cube's volume changing when the edge length is 3 inches.
Solution:
We have,

We know that, volume of cube is

Differentiate with respect to t.

Substituting
and a=3, we get



Therefore, the volume increased by 270 cubic inches per sec.