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4 years ago

10

tammy is riding her bicycle. she rides for 27.5 kilometers at a speed of 11 kilometers per hr. how many hours does she ride?

1 answer:

luda_lava [24]4 years ago

3 0

2.5 hours. You take the total amount of kilometers and divide it by the kph (kilometers per hour), which in this case is 11. If you do that, you'll get your answer of 2.5 hours or 2 hours and 30 minutes.

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Three consecutive even numbers have a sum where one half of that sum is between 90 and 105.

dexar [7]

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5 0

3 years ago

Read 2 more answers

Question 1- The Rockefeller Center Christmas Tree has a volume of 88,548 ft3. It has a height of 94 ft. Find the radius.

Serjik [45]

Answer:

Question 1: $r=29.99\ ft$

Question 2: $V=180\ in^3$

Question 3: $V=523.59\ in^3$

Step-by-step explanation:

1- Let's assume that the Rockefeller Center Christmas Tree is a cone.

This formula is used to find the volume of a cone:

$V=\frac{1}{3}\pi r^2h$

Where "r" is the radius and "h" is the height.

In this case we know that:

$V=88,548 ft^3\\h= 94\ ft$

Then, substituting values into the formula and solving for "r", we get:

$88,548=\frac{1}{3}\pi r^2(94)\\\\\frac{3(88,548)}{94\pi}=r^2\\\\\sqrt{\frac{3(88,548)}{94\pi}}=r\\\\r=29.99\ ft$

2- We can use this formula for calculate the volume of the rectangular pyramid:

$V=\frac{1}{3} lwh$

Where "l" is the length of the base, "w" is the width of the base and "h" is the height of the pyramid.

Knowing that:

$l= 9\ in\\w=5\ in\\h=12\ in$

We can substitute values into the formula to find the volume of her pyramid:

$V=\frac{1}{3} (9\ in)(5\ in)(12\ in)=180\ in^3$

3- The formula for calculate the volume of a sphere is:

$V=\frac{4}{3}\pi r^3$

Where "r" is the radius.

Knowing that the the radius of the basketball is:

$r=5\ in$

We get that its volume is:

$V=\frac{4}{3}\pi (5\ in)^3=523.59\ in^3$

7 0

3 years ago

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iren2701 [21]

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3 years ago

15) Find the value of x in the given square<br> Area = 34 in

lyudmila [28]

Answer:

Area of a square is given by:

A = a2

where a = length of side

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3 years ago

Please help me this is my final!!!

PolarNik [594]

Answer:

final for what?

Step-by-step explanation:

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3 years ago

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