Example 42. A train travels first 300 kilometres at an average rate of 30 k.p.h. and further travels the same distance at an average rate of 40 k.p.h. What is the average speed over the whole distance?

Q: 30. A lig a It bend b. It bend

A: If light travels from water to air which has lower refractive index then,

Q: 7. The time required to drive from Atlanta, Georgia, to Nashville, Tennessee, varies average speed…

A: we know, Time=distancespeed thus we observe that time is inversely proportional to speed. i.e.  if…

Q: New Week Subscribers 1 202 2 225 276 379 408 6. 557 What was the average rate of change in the…

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Q: This table shows the speed of a marble rolling down an inclined slope. Time (s) 2 3 4 5 Speed (m/s)…

A: 9.Time(s)Speed(m/s)14.2215.9337.2466.75107.66149.97202.9We can see that the speed difference from…

Q: 8.The U.S population had an explosive growth in the 1990's. 9. a. What was the average rate of…

A:

Q: 3.7 - related rates car traveling north at 40 mi/hr and a truck traveling east at 30 mi/hr leave an…

A: We have given,Speed of car travelling north = 40 miles/hrSpeed of truck travelling east = 30…

Q: 3.1 A streetlight is 8m from a wall and 4m from a point along the path leading to the wall. The…

A: We  need to find rate of length shortening.

Q: 11) What is the rate of change? y=+3 Your answer

A:

Q: m| Schoolk x Ltool/1665624882/launch 5.4 Cool-down Diego runs a 10 kilometer race and keeps track of…

A:

Q: 1) The value of an account can be calculated using the formula V(t) = 150*1.035 where V(t) is…

A:

Q: 8. A rocket is fired into the air with an initial velocity of 98 m/s. The height (h) of the rocket…

A: The height of the rocket after t seconds is given by the expression h=98t-4.9t2

Q: Q2. Suppose you are traveling from Chittagong to Cox's Bazaar by car. The distance between Cox's…

A: The average speed can be calculated by the formula, Average speed=Total distanceTotal time taken.…

Q: The graph shows the population of bacteria in a culture. Please help me! A) Determines the average…

A:

Q: 8. A dog chases a squirrel at a rate of 3 m/s. The squirrel dashes up a tree trunk (vertical) at the…

A:

Q: What is the average rate of change of the height of the plant between Week 4 and Week 12, in inches…

A: Given:  Week Height (in inches) 4 24 6 27 8 30 12 48

Q: How well does the average rate of change describe how the mold changes for these 6 days?

A: Formula used : Average rate of change of f (x) in between a and b is  f(b) - f(a) / b-a

Q: During your trip to New York City (320 miles away), you drive at a constant rate of 60 mph. During…

A:

Q: The table gives the yearly sales, S, of a retail store in years. Year, t Sales, S 41,601 39,548…

A: Explanation of the answer is as follows

Q: The graph shows the population of bacteria in a culture. a) Determines the average rate of variation…

A: Average rate of variation of a function f(x) between x=a  and x=b  Ax=fb-fab-a

Q: 6. How is the instantaneous rate of change found?

A: Answer and explanation is given below..

Q: y 3 区 1. 5.

A:

Q: he number of adults in prison,jail on probation or on parolt is provided in the table. YEARS (SINCE…

A: For the given data points, the average rate of change of a function is the ratio of change in the…

Q: The uniform motion of a car is shown in this distance time graph. What is the average speed of the…

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Q: 2.7 2.8 2.9 3. 3.1 h(q) 2435 2975 3633 4438 5420 Estimate h' (2.9) using the table above.

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Q: What is the constant rate of change between the quantities in the table? Number of Total Teams…

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Q: What is the average rate of change of x² - 6x - 7 = 0 on the interval between x = 2 and x = 3? What…

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Q: 1. Definition: "The average rate of change of a function f on the interval [a, a + h] is"...

A: