6,938 Answered Questions for the topic mathematics

Mathematics Math Calculus Precalculus

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= 
Follows • 1
Expert Answers •1
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).
Follows • 1
Expert Answers •1
Mathematics Precalculus Algebra

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?
Follows • 1
Expert Answers •1
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... more
Follows • 1
Expert Answers •1

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... more
Follows • 1
Expert Answers •1

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... more
Follows • 1
Expert Answers •1
Mathematics

09/22/21

2 2/5 + 3/4 = N. With solution.
Follows • 1
Expert Answers •1
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)
Follows • 1
Expert Answers •1
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?
Follows • 1
Expert Answers •1
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... more
Follows • 1
Expert Answers •1
Mathematics Math Algebra 1 Calculus

09/21/21

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... more
Follows • 1
Expert Answers •1
Mathematics Math Calculus Derivative

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... more
Follows • 1
Expert Answers •1

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... more
Follows • 2
Expert Answers •1
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?
Follows • 1
Expert Answers •1
Mathematics Math Algebra 1 Algebra 2

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... more
Follows • 1
Expert Answers •1
Mathematics Algebra Maths

09/20/21

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.
Follows • 1
Expert Answers •1
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... more
Follows • 1
Expert Answers •1
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!
Follows • 1
Expert Answers •1
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... more
Follows • 1
Expert Answers •1
Mathematics

09/19/21

Seven less than nine times a number at most negative one hundred and thirty three, what is the number range?
Follows • 1
Expert Answers •1
Mathematics

09/18/21

Chuck and Irene went on a 46-mile canoe trip with their class. On the first day they traveled 23 miles. What percent of the total distance was that? Round to the nearest hundredth when necessary.
Chuck and Irene went on a 46-mile canoe trip with their class. On the first day they traveled 23 miles. What percent of the total distance was that? Round to the nearest hundredth when necessary.
Follows • 1
Expert Answers •1
Mathematics

09/18/21

Chuck and Irene went on a 46-mile canoe trip with their class. On the first day they traveled 23 miles. What percent of the total distance was that? Round to the nearest hundredth when necessary.
Chuck and Irene went on a 46-mile canoe trip with their class. On the first day they traveled 23 miles. What percent of the total distance was that? Round to the nearest hundredth when necessary.
Follows • 1
Expert Answers •1
Mathematics

09/18/21

Suppose that |S|= 16. How many subsets does S have that contain exactly 14 elements?
Follows • 1
Expert Answers •1
Mathematics Math

09/17/21

A college has 19 engineering students for every 81 students enrolled. If the college has 750 students, approximately how many are engineering students?
Follows • 1
Expert Answers •1
Mathematics Math

09/16/21

how to solve this math question? increasing, decreasing?
Question is k(t) = 3t2/3-twhat is the local minimum and maximum also, what is each function to estimate the intervals on which the function is increasing and decreasing?
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.