Answer:
Rate of change of the surface area is 36 m² per hour.
Step-by-step explanation:
Let x be the side of the cube,
So, the volume of the cube,
Since, the surface area of the cube,
( From equation (1) )
Differentiating with respect to t ( time ),
We have,
V = 8 meters, = 18 m³ / h,
Answer:
45.24%
Step-by-step explanation:
Given that:
Correlation Coefficient (r) between number of hours a child play video games and number of minutes spent doing homework = - 0.74
The Coefficient of determination (r²) gives the percentage of variation in the dependent variable which can be explained by the independent variable.
Hence, the r² value = (-0.74)² = 0.5476 ; 54.76% which is about 55% variation in the number of minutes spent doing homework can be explained by the number of hours a child plays video games.
Hence the unexplained variance due to differences in children's ages is (100% - 54.76%) = 45.24%
Answer:
Wow!!! you in college or some that $h!t looks hard
Step-by-step explanation:
Can u help me plz?
Answer:
94 cm
Step-by-step explanation:
add the sides together
<span>Round trip for robot, because it has to get to the destination and back = 3 miles
Rate of robot is 4 miles per hour.
t = time for robot to make delivery.
4r = 3
r = 3/4 = 0.75
It will take the robot 0.75 hours to make the delivery and come back to re restaurant.</span>