6,964 Answered Questions for the topic mathematics
Mathematics Math
09/25/21
It has to do with finding a value in between numbers
I need your help in finding the value in a problem I am working on.It's for chemistry, and it has a lot to do with math. I must find the estimated angle measure when t = 32 minutes. I have an angle...
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Implicit differentiation question
If 2x^2+5x+xy =1 and y(1)= -6 find y'(1)=?
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Implicit differentiation question
If 2x^2+5x+xy =1 and y(1)= -6 find y'(1)=?
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Need helping with correlation coefficents
Just need an explanation and work shown so I can understand how you worked through it so I can finish the rest of the assignment. I know this can also be done in excel but I was not exactly sure...
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Mathematics
09/24/21
Make predictions using experimental plz answer correctly
Layla's Cupcakes recently sold 7 coconut cupcakes and 14 other cupcakes. Considering this data, how many of the next 9 cupcakes sold would you expect to be coconut cupcakes?
09/23/21
Help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Use addition formulas and the values of sinθ and cosθ for θ=π/4, π/3 to compute sin7/12π and cos7/12π exactly. (Use symbolic notation and fractions where needed.) sin7/12π=cos7/12π=
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Mathematics
09/23/21
Writing equations of lines parallel and perpendicular to a given line through a point
Consider the line y=-3x+9. Find the equation of the line that is parallel to this line and passes through the point (7, -6).
09/23/21
x varies inversely as y and x is 3, when y is 10. What is y when x is 5?
what would the variable y be when x is 5?
Mathematics
09/23/21
Please help me! My friend has $304 to spend on a fence for her rectangular garden.
she wants to use cedar fencing which cost $15 per meter on one side and cheaper metal fencing which cost four dollars a meter for other three sides. What are the dimensions of the garden in the...
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09/22/21
calculus interest rate question
If 1300 dollars is invested at an annual interest rate r compounded monthly, the amount in the account at the end of 4 years is given byA = 1300 (1 + 1/12(r) ) ^48Find the rate of change of the...
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09/22/21
Calculus Problem, brightness of a star
A Cepheid variable star is a star whose brightness, B , alternately increases and decreases. Suppose that Cephei Joe is a star for which the interval between times of maximum brightness is 6.1...
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Mathematics
09/22/21
2 2/5 + 3/4 = N. With solution.
Mathematics
09/21/21
If the equilateral triangle below has a perimeter of 9x + 12. What is the measure of each side? (Hint: this triangle has 3 equal sides, so divide the perimeter by 3)
Mathematics
09/21/21
If 1/2 gallon of paint covers 1/6 of a wall, then how much paint is needed for the entire wall?
Mathematics Math
09/21/21
UnitMath Problem
To begin a bacteria study, a petri dish has 2400 bacteria cells. Each hour since, the number of cells has increased by 8.4%.Let t be the number of hours since the start of the study. Let y be the...
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Arizona taxes problem.
The following is from the actual Arizona state tax table for 2020 taxes.A single person whose taxable income is between $0-$27,272 is charged 2.59% in tax.A single person whose taxable income is...
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09/20/21
Calculus Problem, object on rope
An object with weight W is dragged along a horizontal plane by a force acting along a rope attached to the object. If the rope makes an angle t with the plane, then the magnitude of the force is F...
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09/20/21
Piecewise linear functions
Derek earns $25 per hour (or part of an hour) for a regular 40-hour work week. Sometimes, he works over 40 hours a week and earns “double time” for the extra hours worked. (That means that his...
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Mathematics
09/20/21
Jaime is 2 years older than Alejandra. In 5 years the sum of their ages will be 80. How old is Jaime now?
Piecewise linear functions
Derek earns $25 per hour (or part of an hour) for a regular 40-hour work week. Sometimes, he works over 40 hours a week and earns “double time” for the extra hours worked. (That means that his...
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Ted is packing boxes. He packs 88 boxes in 8 hours. Since he is getting better, each hour he packs 4 more boxes than the previous hour. How many did Ted pack in the 2nd last hour?
Complete using algebra if able.
Mathematics Math
09/19/21
Which steps would I have to make to solve this. Thank you
One nurse is instructed to check a patients blood pressure every 45 minutes and another is instructed to take the same patients every 60 minutes. If both nurses are in the patients room at this...
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Mathematics
09/19/21
Prove that a set complement is equal to the set itself for a given set A
Prove that a set complement is equal to the set itself for a given set A. Thank you for your help!
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Mathematics Math
09/19/21
A suit is on sale for 36% off. The sale price is $336. What is the regular price?
Part I - How would you first calculate the sales price? Fill in the blank below . Sales Price = ____% of Regular PricePart II - What is the next step to solving the problemPart III - What...
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Mathematics
09/19/21
Seven less than nine times a number at most negative one hundred and thirty three, what is the number range?
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