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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.

1,146,271 Questions
Math and Arithmetic
Area
Volume

How many cubic feet are in a foot?

None. A foot is one-dimentional. Any cubic measurement needs three dimensions, length, width, and height.

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Math and Arithmetic
Calorie Count

How do you convert 290 calories into grams?

Calories is a measure of energy, likewise a measure of energy has no equivalent measured mass since mass and energy are independent from each other.

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Math and Arithmetic
Units of Measure
Cooking Measurements

How many ounces are in a quart?

Ounces are a measure of mass/weight, Quarts are a measure of volume. The two can not be equated unless one knows the density of the substance being measured.
There are many equivalent measurements for a quart:

2 pints

4 cups

1/4 gallon

32 fluid ounces

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Math and Arithmetic
Units of Measure
Temperature

What unit is commonly used in measuring heat?

Celsius is the most common used way to tell the temperature. Only American uses the Farienhiet.

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Math and Arithmetic
Algebra
Geometry

What shape has 5 faces 3 rectangles 2 triangles?

A triangular prism.

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Math and Arithmetic

What multiplies to get -54 but adds to get -3?

1. x+y=-3 (or, x = -y-3)

2. x*y=-54

Use equation 1 to substitute for x in equation 2:

(-y-3)*y = -54

y2+3y = 54

y2 + 3y - 54 = 0

Factor&solve:

(y+9)(y-6)=0

y = {-9,6}

(x,y)={(6,-9),(-9,6)}

6 & -9

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Fuel Economy and Mileage
Math and Arithmetic
Orlando

How much would it cost to drive 2000 miles getting 25 mpg and at 3.00 a gallon?

2000 miles @ 25mpg = 80 gallons @ 3.00 a gallon is 240.00

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Math and Arithmetic

Is 365 divided by 90 the same as 73 divided by 18?

The two fractions are not "the same", but they are indeed equivalent to each other - when expressed in decimal form, 365/90 is equal to 73/18.

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Math and Arithmetic
Physics
Kinematics

What is the velocity time graph of a stationary object?

A straight line that coincides with the time axis, i.e., its value is zero at any time.

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Math and Arithmetic
Calendar

What day of the week was October 7th 1990?

October 7 1990 was a Sunday.

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Associates Degrees
Graduate Degrees
Math and Arithmetic

How long does it take to earn 60 credit hours?

Two years if you go full time

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Science
Math and Arithmetic
Physics
Waves Vibrations and Oscillations

How are wave velocity frequency period and wavelength related?

Wave frequency can be calculated by dividing the speed of the wave (if we're talking about electromagnetic waves in vacuum, that would be the speed of light, c) by wavelength.

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Math and Arithmetic
Mile Run

Can a person run 15 miles in one hour?

as of now a human cannot. The fastest ever time by a human running a half marathon is 58:23 seconds, a half marathon is 13.1094 miles.

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Math and Arithmetic
Units of Measure
Weight and Mass

How much 103 kilogram in pounds?

103kg is equivalent to about 227lbs.

The formula to convert kg to lbs:

103 kg*

2.2046 lbs

1 kg

=

227.0761301 lbs

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Math and Arithmetic
Algebra

Difference between Union and Set Intersection Operation?

union means to group the given sets. where as intersection means to pick out the common elements from the given sets.

if set a has 1,2,3 elements and B has 1,2,3,4,5. then its union will have 1,2,3,4,5 as its elements. and its intersection will have 1,2,3 as its elements.

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Math and Arithmetic
Algebra
Mapping and Cartography

Would A map scale 1S5000 be better for showing city streets than a map of scale 1S500000?

A map scale of 1 to 5000 would show about a mile of city in a foot of map space. That is good enough to show the typical 10 - 16 streets per mile found in many cities.

A scale of 1 to 500000 would show 100 miles in a foot wide map. You could show Baltimore and Washington on the same page. This would not allow showing any small or medium sized streets.

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Math and Arithmetic
Algebra

Solve -2x plus 14 equals 20?

-2x+14=20

-2x=20-14

-2x=6

-2x/-2=6/-2

x=-3

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Math and Arithmetic
Algebra
Length and Distance

What is 40.5 inches to feet?

3' 4½"

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Math and Arithmetic
Algebra

How fast is 1km in 4 minutes in mph?

To answer this question we need to first convert 1 km in miles and then 4 minutes into hours.

First 1 mile = 1.6 km

So 1 km / 1.6 = 0.625 miles (approximately)

Now 60 minutes = 1 hour

So 4/60 = 1/15 of an hour

Since speed = distance/time we have

Speed = 0.625/1/15 = 9.375 miles per hour.

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Math and Arithmetic
Algebra

What is the squareroot of 1282?

35.805

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Math and Arithmetic
Algebra
Numbers

Can pi be negative?

No. Pi is a set number, if it were negative (-3.14159...) it would not represent the ratio of radius to circumference.

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Math and Arithmetic
Football Rules and Regulations
Football Field Measurements

How many football fields are in 1500 feet?

There are 100 yards between end zones on a football field. Each yard is equal to 3 feet so there are 300 feet between end zones. 1500 feet divided by 300 feet is 5, so 1500 feet is the length of 5 football fields.

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Math and Arithmetic
Units of Measure
Cooking Measurements

How many ounces does it take to make a 1 pound?

16

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Database Programming
Math and Arithmetic

What is cardinality ratio?

In mathematics, the cardinality of a set is a measure of the "number of elements of the set". For example, the set A = {2, 4, 6} contains 3 elements, and therefore A has a cardinality of 3. There are two approaches to cardinality - one which compares sets directly using bijections and injections, and another which uses cardinal numbers.

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