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2 years ago

Kelly runs a distance of 100 metres in a time of 10.52 seconds.

Mathematics

1 answer:

ad-work [718]2 years ago

8 0

Answer:

Upper bound for distance = 100.49. This is the highest number that you can round up to get 10.52.

Lower bound for time = 10.515 seconds. This is the lowest number that you can round up to get 10.52.

Upper bound for average speed = Upper bound for distance divided by upper bound for time.

100.49/10.5249 = 9.548 seconds.

Lower bound for average speed = Lower bound for distance divided by lower bound for time.

99.5 / 10.515 = 9.463 seconds.

Step-by-step explanation:

Hope this helps you out.

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What property was used on 14k+2(3k+5)-5=10 to obtain 14k+6k+10-5=10

ohaa [14]

The difference between

i) <span>14k+2(3k+5)-5=10 and

ii) </span><span>14k+6k+10-5=10

is the equality </span>2(3k+5)=6k+10

The property used here, can be described for any numbers a, b and c as:

$a \cdot (b+c)=a \cdot b +a \cdot c$

This is called the DISTRIBUTIVE PROPERTY

Answer: DISTRIBUTIVE PROPERTY

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2 years ago

Question 14. A carousel makes one complete revolution every 75 seconds. Levi sits on the carousel 4 feet from its center. If the

garik1379 [7]

Answer:

The correct option is;

H. 32·π

Step-by-step explanation:

The given information are;

The time duration for one complete revolution = 75 seconds

The distance from the center of the carousel where Levi sits = 4 feet

The time length of a carousel ride = 5 minutes

Therefore, the number of complete revolutions, n, in a carousel ride of 5 minutes is given by n = (The time length of a carousel ride)/(The time duration for one complete revolution)

n = (5 minutes)/(75 seconds) = (5×60 seconds/minute)/(75 seconds)

n = (300 s)/(75 s) = 4

The number of complete revolutions - 4

The distance of 4 complete turns from where Levi seats = 4 ×circumference of circle of Levi's motion

∴ The distance of 4 complete turns from where Levi seats = 4 × 2 × π × 4 = 32·π.

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2 years ago

On a coordinate plane, a curved line crosses the y-axis at (0, 1), crosses the x-axis at (.25, 0), turns at point (2, negative 3

valentina_108 [34]

Answer:

All numbers greater than or equal to -3.

Step-by-step explanation:

Just took the edge test.

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2 years ago

Find the area of this quadrilateral. Explain or show your strategy.

Verizon [17]

Answer:

24 units

Step-by-step explanation:

1) Separate this quadrilateral into 2 triangles

2) Multiply the height by the width of one of the triangle

- Multiply 8×3

= 24

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1 year ago

A rectangle has an area of 36 inches squared. Write an equation to show how the length (l) varies inversely the width (w).

Anastaziya [24]

Start with the first sentence, and the definition of the area of a rectangle:
l * w = 36

Rewrite the equation to get
l = 36 / w
or
w = 36 / l
Either one shows the inverse relationship between w and l.

Assuming the last part wants you to write an equation for an x-y graph, the equation would be
y = 36 / x

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2 years ago