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mafiozo [28]
3 years ago
10

Explain how you would estimate to subtract 189 from 643

Mathematics
1 answer:
Dima020 [189]3 years ago
5 0
I would just round up to 200 and then subtract twelve or just subtract 200 what ever way u prefer. 
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Suppose a spherical balloon grows in such a way that after t seconds, its volume is V = 4 sqrt(t) cm3.
chubhunter [2.5K]
The volume at time <span>t = 25 seconds
since </span><span> V = 4 sqrt(t) cm3, 
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3 years ago
What makes two angles exterior versus interior ?<br>​
astraxan [27]

Answer:

Any angle that is on the inside of a shape is called an interior angle.

Step-by-step explanation:

Any angle that is on the outside of a shape is called an exterior angle. An exterior angle is made by extending one of the lines of the shape beyond the intersection point. ... Notice that the two angles make a straight line.

4 0
2 years ago
The Oriental Pearl Tower in Shanghai, China, is a 468-meter high tower with 11 spheres along the tower. Two spheres are larger t
Alexeev081 [22]

The approximate total volume of the two largest spheres on the Oriental Pearl Tower 113105.45 m³.

<h3 /><h3>How to find the volume of a sphere</h3>

The volume of the sphere is calculated as follows:

volume = 4 / 3 πr³

where

  • r = radius

The lower two larger spheres in the tower has a radius of 25 meters and 22.5 meters. Therefore, the total volume of the two largest sphere is as follows:

volume of lower sphere = 4 / 3 × 3.14 × 25³

volume of lower sphere = 196250 / 3

volume of lower sphere = 65416.6666667

volume of lower sphere = 65416.7 m³

volume of higher sphere = 4 / 3 × 3.14 × 22.5³

volume of higher sphere = 143066.25 / 3

volume of higher sphere = 47688.75

volume of higher sphere = 47688.8 m³

The approximate total volume = 65416.7 + 47688.8  = 113105.45 m³

learn more on sphere here: brainly.com/question/13833611

4 0
2 years ago
Buses arrive at a stop every 14 min. Each bus waits 3 min before departing. What is the probability that a person arriving at th
Mnenie [13.5K]
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3 years ago
A laptop computer is on sale for 10% off the original price
Vlad1618 [11]

Answer:

$1,252.13 I believe  or $1,252

Step-by-step explanation:

Multiply the 1500 by .10 and you'll get 150

Now subtract that from 1500 that's 1350

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Subtract that from 1350 and you'll get the answer!

7 0
3 years ago
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