11/29/20

Trigonometry, solving for x on an interval

The question is: Solve for x on the interval [-2pi, 4pi]a.) 1+sin(x) = 2cos^2xb.) 2cos^2x-1 = 0My teacher said there should be 9 answers, I am just kind of unsure of where to start
Follows • 1
Expert Answers •3

11/29/20

(-2(e^-x))sinx=0
Set f''(x)=(-2(e^-x))sinx equal to 0 and solve to find the inflection points of f(x)=(e^-x)sinx
Follows • 1
Expert Answers •1

11/29/20

d - 1 = - 11 what is d
Follows • 1
Expert Answers •1

11/29/20

Find the height after t years. h(t) = (b) How tall are the shrubs when they are sold?
An evergreen nursery usually sells a certain shrub after 9 years of growth and shaping. The growth rate during those 9 years is approximated by dh dt  = 1.7t + 3, where t is the time (in years)... more
Follows • 1
Expert Answers •2

11/29/20

Two identical charged objects exert an electrostatic force of 50 N onto each other when they are 125 km apart. The force is an attractive force.
What are the charges of the objects?65.9 C each9.3 C and -9.3 C9.3 C each65.9 C and -65.9 Cmy choice is c
Follows • 1
Expert Answers •1

11/29/20

Waves Physics Question
Estimate the amplitude and the wavelength of this function.
Follows • 1
Expert Answers •1

11/28/20

i need help with this problem i dont know how to solve it
 y=3−4x
Follows • 0
Expert Answers •2

11/27/20

how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?
A machinist wishes to insert a steel rod with a diameter of 9 mm into a hole with a diameter of 8.998 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
Follows • 1
Expert Answers •1

11/27/20

Please help with a, b, and c
Plot the point [−4,−π/4]​, given in polar​ coordinates, and find other polar coordinates (r,θ) of the point for which the following are true.​(a) r>0, −2π≤θ<0          ​(b) r<0,... more
Follows • 1
Expert Answers •1

11/27/20

Let y be defined implicitly by the equation ln(8y)=5xy.
A) Use implicit differentiation to find the second derivative of y with respect to x. ((d^2)y)/(d(x^2)= ? simplify your answer as much as possible. B) Find the point on the curve where... more
Follows • 1
Expert Answers •1

11/26/20

Approximation of the Area
Find an approximation of the area of the region R under the graph of the function f on the interval [0, 2]. Use   n = 5 subintervals. Choose the representative points to be the midpoints of the... more
Follows • 0
Expert Answers •2

11/25/20

Assume 1.5 grams of a metal and an 8 mL change in volume when the metal is placed in water.
Follows • 1
Expert Answers •1

11/25/20

Chem Homework. Really need help
The combustion of octane, C8H18, proceeds according to the reaction shown.2C8H18(l)+25O2(g)⟶16CO2(g)+18H2O(l)If 611 mol of octane combusts, what volume of carbon dioxide is produced at 24.0 ∘C and... more
Follows • 1
Expert Answers •2

11/25/20

An object moving in a straight line with an initial velocity of 10 m/s undergoes an acceleration of a ( t ) = 6 t − 10 m/s 2 , t seconds after an experiment begins.
An object moving in a straight line with an initial velocity of 10 m/s undergoes an acceleration of a(t)=6t−10 m/s2, t seconds after an experiment begins.The velocity of the object after t seconds... more
Follows • 1
Expert Answers •2

11/25/20

Coin flip 2 Players
Player 1 and Player 2 are playing a game of flipping a coin 5 times. The player with the most heads win.What is the probability of Player 1 flipping 3 heads and 2 tails and Play 2 flipping 2 heads... more
Follows • 1
Expert Answers •1

11/25/20

Algebra 2 Modeling
Each Christmas elf makes x toys in an hour. n elves work for t hours to produce 1000 toys. Write an equation that relates x, n, and t.
Follows • 1
Expert Answers •2

11/24/20

If QS−→ bisects ∠PQR, m∠PQS=7x−6, and m∠RQS=4x+15, what is m∠PQR?
Follows • 1
Expert Answers •2

11/23/20

How do you find the zeros of x^2(2x-3)?
Follows • 2
Expert Answers •2

11/23/20

A piece of metal at 100 ℃ has its Celsius temperature doubled. By what factor does its kelvin temperature increase?
Follows • 1
Expert Answers •1

11/22/20

Probability Expected Value
Can someone pls explain the following question in detail with all the steps? If X is a continuous random variable with density function f (x) that is an even function and E(X) exists, show... more
Follows • 1
Expert Answers •1

11/22/20

Write the first four terms of the sequence whose general term is given below.
an=(-1)n+1(n+6)a1=a2=a3=a4=
Follows • 1
Expert Answers •1

11/22/20

Find an equation for the conic section with the given properties.
Find an equation for the conic section with the given properties.The parabola that passes through the point (8, −2), with vertex V(5, −1) and vertical axis of symmetry
Follows • 1
Expert Answers •1

11/22/20

Complete the table for a savings account in which interest is compounded continuously. (Round your answers to four decimal places.)
Initial Investment: $350Annual % Rate: ______ (%)Time to Double: ______ (yr)Amount after 13 years: $435.21
Follows • 1
Expert Answers •1

11/22/20

factor by grouping
Factor by grouping.25y-yv+5v-5y2
Follows • 1
Expert Answers •1

11/22/20

Let f be the function given by f(x) = 2 cos x + 3ex. What is the value of f'(0)?
Let f be the function given by f(x) = 2 cos x + 3ex. What is the value of f'(0)?A) 3B) 5C) 8D) 11
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.