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2 years ago

**Brainliest to best answer!!* Thank u to everyone who helps!

Mathematics

1 answer:

Dmitrij [34]2 years ago

7 0

Answer:

Step-by-step explanation:

When you read the question it says that her average speed from the library to the gym is 15 mph less than her speed from her home to the library. So x - 15 is what describes that situation.

If it is A it cannot be anything else.

B is incorrect. x - 15 is not a time. It is a rate. It can be used to develop the amount of time, but by itself it is still A.

C is incorrect. Her average speed from her house to the library is x

D is incorrect. The distance is given as the same as from her home to the library as from the library to the gym. Both are 4

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Find the volume of the composite solid. Round your answer to the nearest hundredth.

zaharov [31]

Answer:

Volume of solid = 737 cm³ (Approx)

Step-by-step explanation:

Given:

Radius r = 4 cm

Length of cylinder = 12 cm

Find:

Volume of solid

Computation:

Volume of solid = Volume of hemisphere + Volume of cylinder

Volume of solid = (2/3)πr³ + πr²h

Volume of solid = (2/3)π(4)³ + π(4)²(12)

Volume of solid = 134 + 603

Volume of solid = 737 cm³ (Approx)

5 0

3 years ago

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13. The radius of Earth is approximately 6.4 x 100 m. Use the formula V = 4/3pr^3

romanna [79]

<u>We are given</u>

Radius of Earth; 6.4 x 100 meters = 640 meters

Clearly, the shape of the earth is a sphere. Thus, to determine the volume of the earth, we will use a formula that determines the volume of a sphere.

$\implies \text{Volume of sphere =} \ \dfrac{4\pi r^{3}}{3}$

When we substitute the radius in the formula, we get;

$\implies\text{Volume of sphere} = \dfrac{4\pi (640)^{3}}{3}$

$\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}$

Take π as 3.14

$\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}$

$\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}$

Simplify the numerator;

$\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}$

$\implies \text{Volume of sphere} = \dfrac{3292528640}{3}$

Divide the numerator by 3;

$\implies \text{Volume of sphere} = \dfrac{3292528640}{3}$

$\implies \text{Volume of sphere} = \boxed{1097509546.67 \ \text{m}^{3} } \ \ \ (\text{Estimated})$

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1 year ago

The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the

ololo11 [35]

Answer:

23748 or 27348 (as 48 is divisible by 4)

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2 years ago

) How long does he travel at 30 km/h, if he travels 1.2 h at 20 km/h?

GREYUIT [131]

Step-by-step explanation:

please mark me as brainlest

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2 years ago

What do you say when you get off a boat

Vanyuwa [196]

Usually people love to travel via boat including me :). At some point you need to get off from boat.

Question is asking about what should we say when we get off from boat. There can be lots of answers for this question because there is no fixed rule to leave the boat.

You may say good bye or wish the people who are still on the boat.

In fact you are free to say anything in the world. :)

3 0

3 years ago

Read 2 more answers

****Brainliest to best answer!!*** Thank u to everyone who helps!

**Brainliest to best answer!!* Thank u to everyone who helps!