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Valentin [98]
3 years ago
9

What is your best guess for finding the speed of a runner?

Mathematics
1 answer:
Leokris [45]3 years ago
7 0
Divide the distance of the race by the time taken to complete the race. Just like how miles per hour is distance divided by time.
You might be interested in
1. How can you tell that a point on the graph is a maximum or minimum?
nekit [7.7K]

9514 1404 393

Answer:

  1. there are no points higher than a maximum; no points lower than a minimum
  2. average rate of change is the slope of a straight line connecting the points of interest.

Step-by-step explanation:

1. A point on a graph is a maximum if there are no points on the graph that are higher.

A point on a graph is a minimum if there are no points on the graph that are lower.

Sometimes you're interested in a "local" maximum or minimum. In that case, the "no points higher/lower" rule refers to points in the immediate vicinity of the one of interest.

Sometimes you're interested in a maximum or minimum on an interval. In that case, the rule applies to points contained within the interval. (The maximum or minimum may be at the end of the interval.)

__

2. Average rate of change is defined over some interval. That is, you are given the end points of the interval of interest. The average rate of change is the slope of a straight line between those end points. The slope formula applies:

  m=\dfrac{y_2-y_1}{x_2-x_1} \quad\text{where the end points of the interval are $(x_1,y_1)$ and $(x_2,y_2)$}

4 0
3 years ago
Four hundred five times seventy
12345 [234]

Answer:

Step-by-step explanation:

28350, two thousand and eight, three hundred and fifty

7 0
3 years ago
Read 2 more answers
Solve the equation by completing the square: <br> 3x^2 – 9x = -6
AVprozaik [17]
So my step one would be to add the six over and get 3x squared -9x+6=0, then divide by 3 to get x squared-3x+2=0. The next step is seeing what two numbers multiply to 2 but also add to negative three. The two numbers are -1 and -2. So then you are going to make two equations, one being x-1=0 and the other being x-2=0. Solve both to get X=1 and X=2, check your answers in the original equation. Hope this helps!
6 0
3 years ago
Read 2 more answers
Two negative consecutive integers have a sum of -65. what are the integers?
Ede4ka [16]

Answer:

-32 and -33

Step-by-step explanation:

x + (x + 1) = -65

2x +1 = -65

2x = -66

x = -33. So (x + 1) = -33 + 1 = -32

-33 + -32 = -65

8 0
4 years ago
Scientists on an oceanographic research vessel board a miniature submarine when it is at an elevation of 2 meters above the ocea
svetoff [14.1K]

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

The ocean floor directly beneath the boat is at a depth of = 180 meters

Submarine is at an elevation when it is above the ocean's surface = 2 meters

Total distance submarine needs to descends at a constant rate = 180+2=182 m

Rate of submarine descends = 0.4 meters per second.

Time taken by a scientist spend descending after boarding the submarine is given by

Time=\frac{Distance}{Speed}\\\\Time=\frac{182}{0.4}\\\\Time=455\ seconds

so, it must be less than 455 seconds.

therefore, it becomes x<455.

Hence, Option 'A' is correct.

5 0
3 years ago
Read 2 more answers
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