1,081 Answered Questions for the topic Equations

Equations

02/15/16

Shirley can complete a task in 5 hours, and Cora can complete the same task in 9 hours. How long should it take to complete the task, working together?
Write your answer as an improper fraction or mixed number
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Equations

02/15/16

Can't find the answer
F+0.4+0.6f=-0.6
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Equations

02/10/16

The width of a rectangle is half the length. The perimeter is 42 cm. find the dimensions of the rectangle.
I need the dimensions of the rectangle 
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Equations

02/10/16

Heidi has 12 more $5 bills then $2 bills. Altogether she has $137. How many of each kind does she have
how many of each kind does she have 
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02/10/16

The sum of two numbers is 187 and their difference is 9. Find the numbers
I need to find the numbers 
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Equations

02/09/16

math problem question
carol sold 420 student tickets and 150 adult tickets to the school play. this is a ratio of 42 to 15. why might she decide to keep the actual number instead of an equivalent ratio
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02/09/16

I really need urgent help for this question... What do they mean by determine the conditions? What conditions? And how do I do the question?
Consider the simultaneous equations px-y=6,8x-2y=q determine the conditions that p and q must satisfy of the simultaneous equations have (i) an infinite number of solutions(ii) no solution,(iii) a... more
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02/08/16

Equations for carboxylic acid
Write an equation for the reaction of ethyl ethanoate with dilute acid, Write a separate equation for the reaction of ethyl ethanoate with dilute alkali. Which one is the preferred method of... more
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02/05/16

Need URGENT HELP with this math question!!! (Solve this question with either the elimination method or the substitution method)
A two-digit number is such that the sum of its digits is 1/4 of the number. When the digits of the number are reversed and the number is subtracted from the original number, the result obtained is... more
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Equations

02/02/16

charges 13.95$ per month plus .39$ per minute. B charges no monthly service fee but charges .95$ per minute. minutes are the cost for the two plans equal?
A company charges 13.95$ per month plus .39$ per minute. Company B charges no monthly service fee but charges .95$ per minute. For what number of minutes are the cost for the two plans equal?
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Equations

02/01/16

Problem solving skills
The freshman, junior, and senior classes are selling raffles tickets as a fundraiser for a local hospital 940 tickets were sold in all.  The junior class sold 7/8 as many raffle tickets as the... more
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Equations

01/31/16

Nick opens a savings account with $50. Each week after, he deposits $15. In how many weeks will he have saved $500?
I didn't understand how to get the answer. Please explain the steps on how to get the answer. Thanks a lot!
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Equations

01/31/16

How much did he start with?
 Max went on vacation and took money from odd jobs to make purchases. On day one he spent 1/2 of what he brought. On day two he spent 2/5 of what he had left. Day three he spent his remaining 15.
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Equations

01/27/16

you pay $510 to rent a storage unit for 3 months. The total cost includes an initial deposit plus a monthly fee of $160.
a. write an equation that represents your total cost y(in dollars) after x months. b. interpret the y-intercept.
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Equations Math Algebra Equation

01/25/16

How many units long was the side of the original square?
"Suppose you transform a square by increasing one side by 4 units and decreasing the other side by 2 units. If the area of the resulting rectangle equals 16, how many units long was the side of the... more
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01/25/16

absolute value equations
Solve the equations:|x|= x^2+x-24|x+1|=x^2-5
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01/25/16

solving equations with rational exponents
I'm having a little trouble solving equations when there is a rational exponent. Would you be able to explain how to do the following? (x+3)^2/3 = 8 (x^2-5)^3/2=27 3x(x-1)^1/2 + 2(x-1)^3/2=0
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Equations Equation

01/23/16

help please with equation. I am not sure where the g came from in algebra.
Can someone teach me how to do this? I just figured out the f(x) in algebra and now there is g? it is entirely confusing and I am not really sure how to solve questions like this. Please teach me... more
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Equations Domain

01/23/16

can someone help and check over the work
 Let f(x) = (x - 9)/(x + 2) (a) Calculate f(-3). I got f=-4 for this. or if i didn't finish the entire equation it would be -3f=12 would i finish the equation for... more
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Equations Word Problem

01/21/16

question is in the description box
Write an equation that models an investment of $300 that earns 3.1% interest compounded weekly?
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Equations

01/21/16

question is in the description box
show all the steps of how to solve the equation 8(x-5)+16=24 using three  different methods 
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Equations

01/20/16

equation that is parallel to the equation 3y=-x+5 and through point (0,-3)
solve problem
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Equations

01/15/16

How old am I if 200 reduced by 2 times my age is 16?
 I dont know how to do it
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Equations Inverse Functions

01/14/16

What would the inverse equation be?
The equation is 3^x+5 and have to find the inverse :( p.s is this possible on graphing calculators?
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Equations

01/08/16

3 consecutive numbers whose sum is -159
How do I solve these types of problems, we learned how to do it today in school. I am still very confused after a lot of internet research. Please help! Thank you!
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