 # Math and Arithmetic

## Math is the study of abstractions. Math allows us to isolate one or a few features such as the number, shape or direction of some kind of object. Then we can study what can be learned about the behavior of those features while ignoring everything else about the object.

###### 1,145,956 Questions
Math and Arithmetic

# If the mean of 10 numbers is 58 if one number is 40. what is the mean of the other 9 numbers?

Mean of 10 numbers is 58 so sum of 10 numbers is 580.

One of them is 40 so the sum of the remaining nine is 540.

So mean of the remaining nine is (their sum)/9 = 540/9 = 60

don't know if I'm understanding right but isn't it roughly 3.60

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School Subjects
Math and Arithmetic
Geometry

# How many edges does a rectangular prism have?

A rectangular prism (a cuboid) has 12 edges (also 6 faces and 8 vertices).
A rectangular prism has 12 edges 12 12 edges A rectangular prism has eight (8) edges.

It's a 688!

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Math and Arithmetic

# How many 20s make 100?

Five. We can check the math by adding it together.

20 + 20 + 20 + 20 + 20 = 100

or

20 + 20 = 40 (there's two twenties there)

40 + 20 = 60 (there's your third twenty)

60 + 20 = 80 (fourth twenty)

80 + 20 = 100 (fifth twenty)

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Math and Arithmetic
Units of Measure
Volume

# How many liters are in one gallon?

1 US gallon = 3.785411784 liters.

1 Imperial (UK) gallon = 4.54609188 liters.

1 liter = 0.26417205 US gallons

1 liter = 0.21996919 Imperial (UK) gallons

Conversion to other units:

1 gallon [US, liquid] = 4 US quarts exactly

0.133681 ft3 and

128.000 fluid ounces and

0.003785 m3 and

3785.411 cm3 and

3785.411 ml

Note that a liter is constant across the world, so a US liter = a UK, British, English, Canadian, Indian, Chinese, etc... liter. 3.785 liters per gallon.

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Math and Arithmetic
Jokes and Riddles
Word Games
Word Brain Teasers

# What comes once in a minute twice in a moment but never in a hundred years?

The letter M.

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Math and Arithmetic
Time

# How many milliseconds are there in a second?

1000 milliseconds. the SI prefix milli means 1 thousandth, therefore if a millisecond is a thousandth of a second, then 1000 milliseconds have to combine to make a second. The prefix is familiar, and is commonly used as millilitre, milligram and millimetre, each meaning the same, 1/1000

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Coins and Paper Money
Math and Arithmetic

# How many 20 dollar bills make 200?

10 my friend. Then you can use them to buy food/drinks/lessons like this cutt.ly/becalmearnmoney

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Math and Arithmetic

# Is 0.09 greater than 0.1?

No, it is smaller because if you rounded 0.09 to the nearest 0.1, you would get 0.1, and another reason you can say it is smaller is because if you put it in fractional terms, 0.09 would look like

9/100, but with 0.1, it would be 10/100, so from that, you can hopefully and clearly see that 0.09 is SMALLER that 0.1

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Math and Arithmetic

# What is 8 x 6?

48

because if u =

. 8

. 8

. 8

. 8

. 8

+ 8

-----

48

Or -- 8 x 5 = 40 so one more is 48

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Math and Arithmetic

# How many times does 8 go into 57?

How many times does 8 go into

57

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Math and Arithmetic
Rhyming Words

# What rhymes with platonic?

Some two syllable words that rhyme with platonic are chronic, conic, connick, phonic, sonic, tonic, tronic.

Some three syllable words that rhyme with platonic are bubonic, demonic, fibronic, flextronic, harmonic, ionic, ironic, masonic, medtronic, personic, photronic, plutonic, tectonic, tranzonic.

Some four syllable words that rhyme with platonic are allophonic, avionic, catatonic, electronic, embryonic, , histrionic, hydroponic, hypersonic, hypertonic, isotonic, lasersonic, monophonic.

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Geometry
School Subjects
Math and Arithmetic

# How many faces edges and vertices does a rectangular prism have?

Faces: 6

Vertices [or corners]: 8

Edges: 12
eight.

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Math and Arithmetic

# How many dollars make 600000 cents?

6,000 dollars is equal to 600,000 cents (pennies)

Six Hundred Thousand Pennies is equal to Six Thousand dollars.

Here is a picture of 600,000 pennies at Austin's Blanton Museum of Art

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