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12 Hour Clock Conversion
This calculator performs the following two conversions:
1) Takes a time in 24 hour clock (military time) format and converts it to a 12 hour clock format (AM/PM)
2) Takes a time in 12 hour clock format and converts it to military time (12 hour clock format)

Acceleration
Solves for any of the 4 items in the acceleration equation including initial velocity, velocity, and time.

Addition and Multiplication Tables (Times Tables)
Shows the color coded addition or multiplication table entries and answer for any 2 numbers 1-15.

Algebraic Expressions
This calculator builds algebraic expressions based on word representations of numbers using the four operators and the words that represent them(increased,product,decreased,divided,times)

Area Code Finder
Given a 3 digit area code, this will show what state, time zone, and current time the area code refers to.

Capitalized Cost and Periodic Charge
Given an Asset Value (A), a Salvage Value (S) at time (N), a sinking fund rate of (j), an effective rate of interest (i), and maintenance expense (M), this calculator solves for periodic charge (H) and capitalized cost (K)

Cartesian Product
Given a Set A and Set B, this calculates the Cartesian Product A × B

Clock Angle
Calculate the angle on a clock between the hour and minute hands or how many times on the clock form an angle of (x°) between the minute and hour hand (backwards and forwards)

Clock Gain and Loss
This calculates the gain/loss in seconds of a clock over a certain period of time.

Clock Hands Meet
Calculates the first time on a clock when the hands will meet or touch again.

Compound Interest and Annuity Table
Given an interest rate (i), number of periods to display (n), and number of digits to round (r), this calculator shows the values for the following 4 compound interest annuity functions from time 1 to (n) rounded to (r) digits:
vn
d
(1 + i)n
an|
sn|
än|i
sn|i
Force of Interest δn

Cross Product A × B
Given two vectors A and B in R3, this calculates the cross product A × B as well as determine if the two vectors are parallel

Date and Time Difference
Calculates the difference between two dates using the following methods
1) Difference in dates using year/month/day/hour/minute/second as the primary unit of time
2) Difference in dates in the form of years remaining, months remaining, days remaining, hours remaining, minutes remaining, seconds remaining.

Distance Catch Up
Calculates the amount of time that it takes for a person traveling at one speed to catch a person traveling at another speed when one person leaves at a later time.

Distance Rate and Time
Solves for distance, rate, or time in the equation d=rt based on 2 of the 3 variables being known.

Elapsed Time
This determines the elapsed time between two clock readings.

Equivalent Annual Cost (EAC)
Given 2 Items/machines with an Investment Cost, expected lifetime, and maintenance cost, this will calculate the EAC for each Item/machine as well as draw a conclusion on which project to invest in.

Exponential Growth
This solves for any 1 of the 4 items in the exponential growth equation or exponential decay equation, Initial Value (P), Ending Value (A), Rate (r), and Time (t).

Falling Object
Calculates any of the 3 items in the falling object formula, distance (s), acceleration (a), and time (t).

Forward Rate
Given two times and two zero-coupon yield rates at those times, this calculates the forward rate.

Frequency and Wavelength and Photon Energy
Provides the following 3 items using the speed of light and Plancks constant (h):
- Given a frequency of centimeters, feet, meters, or miles the calculator will determine wavelength in Hz, KHz, MHz, GHz
- Given a wavelength of Hz, KHz, MHz, GHz, the calculator will determine frequency in centimeters, feet, meters, or miles
- Calculates photon energy

Half-Life of a Substance
Given a half-life (h) of a substance at time t, this determines the new substance size at time tn, otherwise known as decay.

Hour and Minute Conversion
Converts Hours and Minutes to Hours for things like timecards and such.

Linear Conversions
Converts to and from the following linear measurements for a given quantity:
Inches
Feet
Yards
Miles
Micrometer
Millimeters
Centimeters
Meters
Kilometers
Furlongs

Littles Law
Given two out of the three inputs for Littles Law, Throughput (TH), Cycle Time (CT, and WIP, this solves for the third item.

MAPE - MPE - MAPD
Given a time series of actual and forecasted values, this determines the following:
* Mean Absolute Percentage Error (MAPE) also known as the Mean Absolute Percentage Deviation (MAPD)
* Symmetric Mean Absolute Percentage Error (sMAPE)
* Mean Absolute Percentage Error (MPE)

Method of Equated Time-Exact Method-Macaulay Duration-Volatility
Given a set of cash flows at certain times, and a discount rate, this will calculate t using the equated time method and the exact method, as well as the macaulay duration and volatility

Mortgage
Calculates the monthly payment, APY%, total value of payments, principal/interest/balance at a given time as well as an amortization table on a standard or interest only home or car loan with fixed interest rate.

Net Present Value (NPV) - Internal Rate of Return (IRR) - Profitability Index
Given a series of cash flows Ct at times t and a discount rate of (i), the calculator will determine the Net Present Value (NPV) at time 0, also known as the discounted cash flow model.
Profitability Index
Also determines an Internal Rate of Return (IRR) based on a series of cash flows

Opposite Direction Distance
Word Problem calculator to measure distance between 2 people moving in opposite directions with rate and time solved for as well

Payback Period
Given a set of cash inflows and cash outflows at certain times, this determines the net cash flow, cumulative cash flow, and payback period

Rule of 72
Calculates how long it would take money to double (doubling time) using the rule of 72 interest approximation as well as showing the mathematical proof of the Rule of 72.

Simple and Compound and Continuous Interest
Calculates any of the four parameters of the simple interest formula or compound interest formula or continuous compound formula
1) Principal
2) Accumulated Value (Future Value)
3) Interest
4) Time.

Simple Discount and Compound Discount
Given a principal value, interest rate, and time, this calculates the Accumulated Value using Simple Discount and Compound Discount

Sinking Fund Depreciation Method
Using the Sinking Fund method of Depreciation, this calculator determines the following:
* Depreciation at time t (Dt)
* Asset Value (A)
* Salvage Value (S)
* Book Value at time t (Bt)

Straight Line Depreciation
Solves for Depreciation Charge, Asset Value, Salvage Value, Time, N, and Book Value using the Straight Line Method.

Survival Rates
Given a set of times and survival population counts, the calculator will determine the following:
Survival Population lx
Mortality Population dx
Survival Probability px
Mortality Probability qx
In addition, the calculator will determine the probability of survival from tx to tx + n

Time Conversions
Converts units of time between:
* nanoseconds
* microseconds
* milliseconds
* centiseconds
* kiloseconds
* seconds
* minutes
* hours
* days
* weeks
* fortnights
* months
* quarters
* years
* centurys
* milleniums

Time Weighted Interest Method
Solves for Interest Rate based on 2 annual asset value events other than beginning or ending value using the Time Weighted Method

Time Zone Converter
Converts a time from one time zone (timezone) to another.

Unix Time Translation
Translates a unix time to date and time information

Work Word Problems
Given Person or Object A doing a job in (r) units of time and Person or Object B doing a job in (s) units of time, this calculates how long it would take if they combined to do the job.

Joan bought 3 cars for \$9876 how much did Joan pay?
The perimeter of a rectangle is 400 meters. The length is 15 meters less than 4 times the width. Fin
The length of the flag is 2 cm less than 7 times the width. The perimeter is 60cm. Find the length a
What pair of consecutive integers gives the following: 7 times the smaller is less than 6 times the
7 less than -2 times a number x is greater than or equal to 41
7 less than -2 times a number x is greater than or equal to 41
7 less than -2 times a number x is greater than or equal to 41
30 increased by 3 times the square of a number
The length of a rectangular building is 6 feet less than 3 times the width. The perimeter is 120 fee
If Mr hernandez has 5 times as many students as Mr daniels and together they have 150 students how m
7 bananas at 15˘ each
Sally can paint a room in 7 hours while it takes Steve 6 hours to paint the same room. How long woul
For the first 10 seconds of the ride, the height of the coaster can be determined by h(t) = 0.3t^3 -
Rachel borrowed 8000 at a rate of 10.5%, compounded monthly. Assuming she makes no payments, how muc
Brenda has already knit 4 centimeters of scarf, and can knit 1 centimeter each night. After 43 night
Marty is 3 years younger than 6 times his friend Warrens age. The sum of their ages is greater than
4 times a number plus 9
3 times the difference of x and 5 is 15
A private jet flies the same distance in 4 hours that a commercial jet flies in 2 hours. If the spee
2 minus 7 times a number
2 times half of a number
4 times the sum of q and p
A city has a population of 240,000 people. Suppose that each year the population grows by 8%. What w
Karin has 3 to spend in the arcade. The game she likes costs 50c per play. What are the possible num
The difference between 3 times x and 4
If 3 times a number added to 2 is divided by the number plus 4 the result is 4/3
A home is to be built on a rectangular plot of land with a perimeter of 800 feet. If the length is 2
Robert has 45 dollars. He buys 6 tshirts and has 7 dollars left over. How much did each tshirt cost?
Dylans mother tells Dylan he must spend less time playing electronic games. On the weekends he spend
add 6 to 2 times c
You and your friend are saving for a vacation. You start with the same amount and save for the same
5 times y, divided by 8
165cm in ft
Diego is jogging at a rate of 5mi/h. A function relates how far Deigo jogs to his rate of speed.
What is the probability of rolling 12, 5 times in a row?
365 subtracted from the quantity q times 146 is the same as w
5 times x, divided by 7
When 20 is subtracted from 3 times a certain number, the result is 43
3 times larger than the sum of 4 and 9
m times the sum of n and 5
Subtract 6 from 7 times s
5 times a number increased by 13
74 increased by 3 times y
6 mph, 2 hours what is the distance
10 times a number is 420
The population of goats on a particular nature reserve t years after the initial population was sett
6 times the sum of a number and 5 is 16
the sum of 5 times p and 10
the sum of a number times 3 and 30 is less than 17
5 times the total of 60 and x
A random sample of 40 adults with no children under the age of 18 years results in a mean daily leis
An employee earns \$7.00 an hour for the first 35 hours worked in a week and \$10.50 for any hours ove
The fastest student in gym class runs 50 meters in 7.4 seconds. The slowest time in the class was 4.
2 times x squared minus 4 times x
A laptop is purchased for \$1700. After each year, the resale value decreases by 25%. What will be th
When 9 is subtracted from 5 times a number, the result is 31
26 increased by 12 times a number
Blake and Tatsu are each assigned a paper for a class they share. Blake decides to write 4 pages at
The patient recovery time from a particular surgical procedure is normally distributed with a mean o
The singular form of the word "dice" is "die". Tom was throwing a six-sided die. The first time he t
If you throw a die for two times, what is the probability that you will get a one on the first throw
Consider the case of a manufacturer who has an automatic machine that produces an important part. Pa
Customers arrive at the claims counter at the rate of 20 per hour (Poisson distributed). What is th
Suppose a firm producing light bulbs wants to know if it can claim that its light bulbs it produces
A researcher believed that there was a difference in the amount of time boys and girls at 7th grade
Imagine a researcher wanted to test the effect of the new drug on reducing blood pressure. In this s
A random sample of 40 adults with no children under the age of 18 years results in a mean daily leis
A random sample of 25 customers was chosen in CCP MiniMart between 3:00 and 4:00 PM on a Friday afte
A random sample of STAT200 weekly study times in hours is as follows: 2 15 15 18 30 Find the sam
A fair coin is tossed 4 times. a) How many outcomes are there in the sample space? b) What is the pr
Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opp
A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population sta
If you buy a computer directly from the manufacturer for \$3,509 and agree to repay it in 36 equal in
You have \$250,000 in an IRA (Individual Retirement Account) at the time you retire. You have the op
If you are running 6 miles per hour, then it takes you 10 minutes to run 1 mile. If you are running
A woman walked for 5 hours, first along a level road, then up a hill, and then she turned around and
Jack and Jill have a magic pail of beans. The number of beans in the pail doubles every second. If
An ancient Greek was said to have lived 1/4 of his live as a boy, 1/5 as a youth, 1/3 as a man, and
There are 480 calories per hour. An officer swims 1.5 hours for 30 days. How many calories is that?
4 times a number cubed decreased by 7
Mimis math class starts at 9:00 A.M. and lasts for 1 hour and 55 minutes. After math class, Mimi has
The relief time provided by a standard dose of a popular children’s allergy medicine averages 7.9
Diana invested \$3000 in a savings account for 3 years. She earned \$450 in interest over that time pe
A television sells for \$750. Instead of paying the total amount at the time of the purchase, the sam
Yael worked out at a gym for 2 hours. Her workout consisted of stretching for 21 minutes,jogging for
10 times the square of a number w divided by 12
Scientists are studying a cell that divides in half every 15 minutes. How many cells will there by a
A passenger train left station A at 6:00 P.M. Moving with the average speed 45 mph, it arrived at st
7 less than -2 times a number x is greater than or equal to 41
A jet plane traveling at 550 mph over takes a propeller plane traveling at 150 mph that had a 3 hour
Country A produces about 7 times the amount of diamonds in carats produce in Country B. If the total
The area of a desert in Africa is 12 times the area of a desert in Asia. If the area of a desert in
The sum of 6 times a number and -8, added to 3 times a number
Write the verbal expression for: 9x
A tractor tire has a radius of 24 inches. If the tire rotates one time around, about how many inches
4 times x plus 2 is at most 10
2 buses leave at 5:30am, 1 comes every 18 minutes and one comes every 15 minutes when will they both
Write a system of equations to describe the situation below, solve using any method, and fill in the
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
if 9 times a number is decreased by 6, the result is 111
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
Is it correct to word "10% * 50 + 50" as "10% upper 50"?
if a train travels at 80 mph for 15 mins, what is the distance traveled?
David roller skates for 3 1/3 hours with a constant speed of 24 km/h and then for another 1 hour 10
3 decreased by 7 times a number
Carl is taking a math test. There are 10 questions which take 30 seconds each; 15 questions which ta
A ball is dropped from a height of 12 feet and returns to a height that is one-half of the height fr
Bangladesh, a country about the size of the state of Iowa, but has about half the U.S population, ab
A house costs 3.5 times as much as the lot. Together they sold for \$135,000. Find the cost of each
An airplane flies at 250 mph. How far will it travel in 5 h at that rate of speed?
If the max time that John can spend on Client A (\$20/hr) in one week is 32 hours, and the min time i
please solve the third word problem
please solve the fourth word problem
please solve the third word problem
porportion problems
Math Written Assignment
In 45 years, Gabriela will be 4 times as old as she is right now.
A group of scientists studied the effect of a chemical on various strains of bacteria. Strain A star
the sum of 2 times a number and -2, added to 4 times a number
Age now problems
Alberto’s salary was \$2000 greater than 4 times Nick’s salary. Write an equation stating Alberto’s a
Age now problems
Find the number of combinations and the number of permutations for 10 objects taken 6 at a time
The length of a rectangular building is 6 feet less than 3 times the width. The perimeter is 120 fee
2 times the sum of 1 and some number is 30. What is the number?
A man is four times as old as his son. In five years time he will be three times as old. Find their
n times 146, reduced by 94 is the same as h
346 times w, decreased by 79 equals w
Age now and then
Age now and then
Age now and then
Age now and then
Beth made a trip to the train station and back. On the trip there she traveled 45 km/h and on the re
There are two bells in the school. Bell A rings every 2 minutes. Bell B rings every 3 minutes. If bo
The length of a rectangular building is 6 feet less than 3 times the width. The perimeter is 120 fee
Match each variable with a variable by placing the correct letter on each line.
A town has a population of 12000 and grows at 5% every year. What will be the population after 12 ye
The Sum of three times a number and 18 is -39. Find the number
The value of 3 times the quantity of 4 + x is greater than 6 less than x.
Adam, Bethany, and Carla own a painting company. To paint a particular home, Adam estimates it woul
A brand new car that is originally valued at \$25,000 depreciates by 8% per year. What is the value o
If 12 times a number is added to twice the number, the result is 112
During a performance, a juggler tosses one ball straight upward while continuing to juggle three oth
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
Suppose that you have just purchased a car for \$40,000. Historically, the car depreciates by 8% each
A movie started at 11:28 am and it ended at 2:49 pm. How long was the movie?
1 integer is 7 times another. If the product of the 2 integers is 448, then find the integers.
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
can someone help me with how to work out this word problem?
Yolanda is riding her bicycle. She rides for 5 hours at a speed of 12.5 kilometers per hours. For ho
A business owner spent \$4000 for a computer and software. For bookkeeping purposes, he needs to post
When 3 consecutive positive integers are multiplied, the product is 16 times the sum of the 3 intege
Word Problem Help
devaughn,sageis2timessydneysage,thesumoftheiragesis78,whatissydneysage
Ashley age is 2 times Johns age. The sum of their ages is 63. What is Johns age?
When 39 is added to a number, the result is 40 times the number. Find the number. Let n be the unkn
Tom is the deli manager at a grocery store. He needs to schedule employees to staff the deli departm
The difference of a number times 3 and 6 is equal to 7 . Use the variable w for the unknown n
HELP SOLVE
HELP SOLVE