07/20/19

Can sin (A+B) = sin A+ sin B
Is it ever possible that sin(A+B)= sin⁡ A+sin⁡ B? If so, explain how. If not, explain why not.
Follows • 3
Expert Answers •2

07/19/19

i think i have it setup correctly but im not sure
Solve the following equation for θ where 0≤θ<π.sec(−θ+π/2)=csc(−θ+π/2)what i have is (−θ+π/2)+(−θ+π/2)
Follows • 2
Expert Answers •3

07/17/19

Solve the following by Substitution 5x + 2y = 18 2x +3y=16
I’m trying to figure out the following:Solve the following system by Substitution:5x + 2y =182x + 3y = 16
Follows • 2
Expert Answers •1

07/17/19

F=ma was invalidated from relativity. Is there any equivalent for Ohm's law in modern physics?
Follows • 2
Expert Answers •1

07/16/19

How do I describe and calculate the effect of an impacting object?
My lab studies the physiology of impact injury on biological tissues. I use a pneumatic cylinder to impart injury into a biological sample and then assess the molecular and physiological changes in... more
Follows • 2
Expert Answers •2

07/16/19

Help me find the test statistic please!
Consider a drug testing company that provides a test for marijuana usage. Among 266 tested​ subjects, results from 29 subjects were wrong​ (either a false positive or a false​ negative). Use a 0.10... more
Follows • 2
Expert Answers •1

07/14/19

Determine the open intervals on which the graph is concave upward or concave downward. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) f(x)=(x^2 +8)/(x^2 -1)

I've gotten to the 2nd derivative, but I'm confused about where to go from there. Any help would be rad! Cheers!
Follows • 2
Expert Answers •1

07/12/19

The formulas below are the cost and revenue functions for a company that manufactures and sells small radios
a. Use the formulas shown to write the​ company's profit​ function, P, from producing and selling x radios. b. Find the​ company's profit if 20,000 radios are produced and sold C(x) = 130,000 +... more
Follows • 2
Expert Answers •1

07/12/19

Quadratic Inequalities
For the inequality y-x > -x^2-1 where is the graph shaded and is the curve solid or dotted? A. below; dotted  B. above; solid  C. below; solid  D. above; dotted
Follows • 2
Expert Answers •1

07/11/19

did the price decrease over the two years
If a story problem is talking about the price of widgets since 2010 and it gives the equation p = -.75x + 2.09, where x is the number of years since 2010, you know that ...
Follows • 2
Expert Answers •2

07/10/19

Help Probability question
Lottery: In the New York State Numbers Lottery, you pay $1 and can bet that the sum of the numbers that come up is 13. The probability of winning is 0.075, and if you win, you win $6.50, which is a... more
Follows • 2
Expert Answers •1

07/08/19

Sine Cosine and Tangent
Why can sine and cosine never be greater than 1? Why is it that cosecant and secant should be greater than 1? Why are tangent and cotangent sometimes undefined?
Follows • 2
Expert Answers •1

07/05/19

Explicit Formulas Help!

On June 1, 2019, an instagrammer had 65,000 followers on Instagram. On July 1, 2019 he had 12% more followers than he had in June. With marketing, the Instagrammer wants to continue to increase by... more
Follows • 2
Expert Answers •3

07/03/19

Electrical energy

The question is " What is the value in KWh for a 300W lamp in 40 minutes? The ans for this question is 0.2kWh but i couldn't do it.
Follows • 2
Expert Answers •1

07/02/19

Calculus Bagel Question
In this question, I already got part a) but I'm having trouble with b & c.The dollar cost of producing 𝑥 bagels is 𝐶(𝑥)=300+0.25𝑥−0.5(𝑥/1000)^3.a) Determine the cost of producing 1000... more
Follows • 2
Expert Answers •1

06/27/19

mathamatices of alzebra
If x=3/y and x decreases from 6 to 3,then y will option are (a)decrease from 4 to 3,(b)increase from 4/3 to 3,(c)decrease from 3 to 3/4 and (d)increase from 3/4 to 3
Follows • 2
Expert Answers •1

06/25/19

IN NEED OF HELP THX
If f(x) = 2(x − 5), find f(8).A.4 B.6 C.8 D.16
Follows • 2
Expert Answers •2

06/25/19

A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).
The results of the regression were:y=ax+ba=-1.077 b=30.98 r2=0.744769 r=-0.863 Use this to predict the number of situps a person who watches 13.5 hours of TV can do (to one decimal place)
Follows • 1
Expert Answers •1

06/25/19

Planet orbits: what's the difference between gravity and centripetal force?
My physics teacher says that centripetal force is caused by gravity. I'm not entirely sure how this works? How can force cause another in space (ie where there's nothing). My astronomy teacher... more
Follows • 2
Expert Answers •1

06/22/19

AP Calculus AB: Differential Equations
The differential equation . produces a slope field with horizontal tangents at y = 2 produces a slope field with vertical tangents at y = 2 produces a slope field with columns of parallel... more
Follows • 2
Expert Answers •2

06/21/19

What integral will find the volume of the solid that is formed when the region bounded by the graphs of y=e^x, x=1, and y=1 is revolved around the line y=-2?
What integral will find the volume of the solid that is formed when the region bounded by the graphs of y=e^x, x=1, and y=1 is revolved around the line y=-2?
Follows • 2
Expert Answers •2

06/19/19

The Normal Distribution
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.2 years, and standard deviation of 2.3 years.The 3% of items with the shortest lifespan will last less... more
Follows • 2
Expert Answers •1

06/18/19

The Normal Distribution

A manufacturer knows that their items have a normally distributed length, with a mean of 13.1 inches, and standard deviation of 2.3 inches.If one item is chosen at random, what is the probability... more
Follows • 2
Expert Answers •1

06/18/19

How do you write the corresponding rectangular equation for x=e^(t-1) and y=e^3t?
I know how to do this but the e^t part is confusing me
Follows • 2
Expert Answers •1

06/18/19

easy to implement method to fit a power function (regression)?
I want to fit to a dataset a power function ($y=Ax^B$). What is the best and easiest method to do this. I need the $A$ and $B$ parameters too. I'm using in general financial data in my project,... more
Follows • 2
Expert Answers •2

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.