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Fudgin [204]
4 years ago
6

Coached Example

Mathematics
1 answer:
yawa3891 [41]4 years ago
8 0

Answer:

Tanya's average speed was \frac{1}{2} laps per minutes.

Step-by-step explanation:

Tanya walked 15 laps on an indoor track in 30 minutes.

Therefore, the average speed of Tanya is \frac{15}{30} = \frac{1}{2} laps per minutes.

Calculation:

The average speed formula is given by V = \frac{\textrm {Distance covered}}{\textrm {Number of munutes spent}}

The distance is 15 laps.

The time is 30 minutes.

Therefore, V = \frac{15}{30} laps per minute.

After simplification, V = \frac{1}{2} laps per mins.

Therefore, Tanya's average speed was \frac{1}{2} laps per minute. (Answer)

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a stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 3.3 ft/s. how rapidly
Softa [21]

In 139.4 \pi ft^2sec rapidly is area of enclosed by the ripple increasing at the end of 6.4 seconds.

What is area of circle?

 For measuring the area occupied by a circular field or plot, use the area of a circle formula. The area formula will allow us to determine how much fabric is required to completely cover a circular table, for example. We can determine the boundary length, or the circle's circumference, using the area formula.

Here area of circle

=> A= πr^2--------> 1

Differentiating 1 with respect to to time then

=> \frac{dA}{dt}= 2\pi r\frac{dr}{dt}

If the radius is  increasing at a constant rate 3.3ft/sec then after 6.4 seconds, radius is

=> 6.4*3.3=21.12 ft.

We know \frac{dr}{dt}= \frac{3.3ft}{sec} and so ,

=> \frac{dA}{dt} = 2*\pi*21.12*3.3=139.4 \pi ft^2sec.

Hence In 139.4 \pi ft^2sec rapidly is area of enclosed by the ripple increasing at the end of 6.4 seconds.

To learn more about area of circle refer the below link

brainly.com/question/10645610

#SPJ4

4 0
1 year ago
Evaluate the expression if x = 3, y = 4 and z = 5. 6y - 2xy​
Levart [38]

Answer:

the answer is 0

Step-by-step explanation:

6 (4) -2 (3)(4)

24-24=0

7 0
4 years ago
Will give Brainliest for the correct anwer!
vodomira [7]
The answer you have chosen is correct! Hope this helps
8 0
3 years ago
What is the slope intercept form of the equation of this line
Nikitich [7]

Answer:

The equation is y=-5+3

4 0
3 years ago
really need help on these two questions for geometry, please actually answer it instead of just grabbing points and leaving :'),
egoroff_w [7]

Answer:

Step-by-step explanation:

The diagonals of a rhombus are perpendicular, so ∠AED = 90° and ∠BEC = 90°.

∠DAE = 180° - ∠AED - ∠EDA = 180° - 90° - 35° = 55°

BD is a transversal across parallel sides AD and BC, so ∠EBC = ∠EDA = 35°.

∠BCE = 180° - ∠BEC - ∠EBC = 180° - 90° - 35° = 55°

5 0
3 years ago
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