# Posts by Mike

Total # Posts: 3,828

**Math**

Carmike Company can further process Product A to produce Product B. Product A is currently selling for $25 per pound and costs $10 per pound to produce. Product B would sell for $32 per pound and would require an additional cost of $10 per pound to produce. What is the ...

**Accounting**

Fender Company had the following data for four months. Total Cost Production Units January $50,000 1,000 February$53,750 1,150 March $61,250 1,450 April $65,250 1,610 Use the “high-low” method to calculate the estimated variable cost per unit. A. $25 per unit B. $44....

**Calculus**

Calculate the area of the region bounded by the graphs of the given equations y=x^2-5x+4 and y=-(x-1)^2 The answer is supposed to be 9/8, but I'm getting -111/8. Idk what I'm doing wrong

**Calculus**

Find the limit lim tan^2(7x)/9x x-> 0

**Math**

In 7 days, a group of workers can plant 21 acres. What is their rate in acres per day?

**Computers**

Convert from binary to decimal (1000)2 - (0011)2 = (?)10

**Accounting**

A company is considering replacing an old machine which had an initial cost of $100,000 and has $75,000 of accumulated depreciation to date.The company is considering purchasing a new machine which costs $195,000.The old machine could be sold for $20,000.The annual variable ...

**Calculus**

Solve using chain rule y=(3x^3+1)(-4x^2-3)^4 So far, I have: y'=(3x^3+1)*4(-4x^2-3)^3*(-8x)+(-4x^2-3)^4*(9x^2)

**Calculus**

Approximate the area under the curve of f(x)=9-x^2 between x=-2 and x=3 by calculating the area of 5 rectangles for both left hand endpoints and right hand endpoints. I have the left hand and right hand endpoints, what I need help in is solving for the actual area. Thanks

**Calculus**

Find dy/dx and express the final answer with a common denominator y=ln x^(2(4x-12))

**Calculus**

Calculate the Riemann sum of the area under the curve of f(x)=9-x^2 between x=-2 and x=3 The answer I come up with is 10/3, but when I solve using integrals, the answer I get is 100/3. Am I doing something wrong?

**Calculus**

Find dy/dx and express the final answer with a common denominator y=lnx^2(4x-12)

**Calculus**

Find y that satisfies the given condition dy/dx=20x(5x^2-1)^3; curve passes through (1,3) I took the antiderivative and ended up with 10x^2((5x^2-1)^4/4). I end up with a large number at the end, which I think might be wrong.

**Calculus**

Differentiate and simplify as much as possible. Cube root(5z+6/-9z+3). The answer should be y'= (23(-9z+23)^2/3)/9(3z-1)^2(5z+6)^2/3) So far, I'm stuck at y'=[23/3(5z+6)(3z+1)][((5z+6)^1/3)/((-9z+3)^1/3)]

**Math**

We have a trapezoid ABCD and the diagonals intersect in point O. AO : OC = m : n Prove that DO : OB = m : n

**Math**

We have a trapezoid ABCD and the diagonals intersect in point O. AO : OC = m : n Prove that DO : OB = m : n

**Math**

Inside a triangle formed by the line 3x+4y=1 and the positive coordinate axis, inscribe a square with three of the vertices on the coordinate axes and one vertex on the line. 1) Find the length of a side of the square. In the triangular region described above inscribe a ...

**Calculus**

Find where the function is increasing and where it is decreasing f(x)=2sin(x) on [0,2pi] Thanks

**Chemistry**

Why are some solutes soluble in water, but others are soluble in cyclohexane?

**Math**

Imagine a circle of rope, which has twelve evenly spaced knots tied in it. Suppose that this rope has been pulled into a taut, triangular shape, with stakes anchoring the rope at knots numbered 1, 4, and 8. Make a conjecture about the type of the triangle. How do I even draw ...

**Chemistry**

Hi bob! Would you mind explaining this one too. Not sure I understand how to solve this one still. These are some of my first limited reagent questions I’ve ever done. Thanks!

**Chemistry**

Hi bob! Would you mind explaining this one too. Not sure I understand how to solve this one still. These are some of my first limited reagent questions I’ve ever done. Thanks!

**Chemistry**

Awesome thank you I wanted to make sure I understand you meant. So it looks like we got the same answer of excess= 23g Mg Thanks!

**Calculus**

Find the inflection points y=x^2/x^+3 So far I've found y'=6x/(x^2+3)^2 but I'm stuck in finding y''. So far, I'm at 6(x^2+3)^2-24(x^2+3)/(x^2+3)^4 and the next step says y''=6(-3x^2+3)/(x^2+3)^3=0 and I don't understand how. Thanks

**Chemistry intro**

H2SO4+2NaOH->2H2O+Na2SO4 1.) How many grams of H2SO4 are needed to produce 135L of water? 2.) How many molecules of water are produced when 12g of sodium sulfate are created?

**Calculus**

Find the extreme values of the function and determine the intervals where the function is increasing/decreasing expressed in interval notation. x(x-2)^2 So far I've found y'=3x^2-8x+4. Thanks

**Physics**

A train slows down as it rounds a sharp horizontal turn, going from 90 km/h to 54 km/h in the 15.0 it takes to round the bend. Compute the acceleration at the moment the train reaches 50.0 km/h. Assume the train continues to slow down at this time in the same rate. I need help...

**Chem**

So i wrote a net ionic equation, and I believe is wrong. Fe(ClO4)3. I wrote 3H+(aq) + Fe(OH)3(s) = Fe3(aq)+ + 3H2O (l) Had to come up with the acid and base that would form the compound

**Calculus**

Find dy/dx for y=3tan^-1(x/2). I know the answer is 6/x^2+4 but I'm stuck at y'=3(1/1+(x/2)^2)(1/2)

**Physics**

Calculate the weight of an object whose Mass is 5kg.(take g=10m\s

**Physics**

Calculate the weight of an object whose Mass is 5kg.(take g=10m\s

**ER Diagram - Database **

An online retailer, S record, which sells physical music albums, plans to implement a DBMS to enhance its data management practice and ultimately advance business operations. The requirements collection and analysis phase of the database design process has provided the ...

**Math**

Solve for 0 < ? ? ? sin ? = sin 2? I get (0,?/3,?,5?/3). Idk what I did wrong.

**math**

sally and hans started counting at the same time. sally counted on by tens from 300. hans counted back by hundreds. after six counts they had reached the same number. what number did hans start counting from?

**physical science**

two cars are headed straight for each other, each at a constant speed of 40mph. A. do the two cars have the same speed? b. do the two cars have the same velocity? c. what is the acceleration of each car while moving at a constant speed

**Math-college**

So it doesn't matter the order? Thanks Sue

**Math-college**

6*4*3*2=144 Would that be the answer, 144 combination choices?

**Math-college**

Tim is making is making a sandwich he has 3 choices of bread, 2 choices of lettuce, 4 choices of meat, and 6 spreads to choose from. How many combinations is he able to make?

**algebra-math**

A club with 25 members wishes to select a 4-member leadership team. How many ways can this be done? 25x4=100 100 variations in the leadership team Would this be correct by any chance?

**algebra-math**

Amy is packing her bags for her trip that she won to go on a boat cruise. Amy won 4 tickets to the boat cruise and Amy can only bring 3 people along with her on this trip, but 15 of her friends want to go. How many different types of groups of friends can Amy bring with her? ...

**Math-college**

Here is my problem. I bought my son Tommy, his back to school clothes. I can’t tell you how happy he is too being going back. Tommy now has, 7 Shirts: 7 Pants: 3 pairs of shoes: How many different possible outfits can Tommy make? Answer would be, 7x7x3=147 147 possible ...

**Algebra**

What's the answer

**algebra-math**

When it comes to linear inequalities, these are explained to be similar to a linear equation, but the difference between the two is that the equal signs are replaced with an inequality symbol. It is also explained that when it comes to doing a linear inequality, it is more ...

**algebra-math**

I can adapt PsyDag's or Ms Sue preference. Would like to compare. Cause, I can't say I have a preference.

**algebra-math**

What is your preference?

**algebra-math**

Make a preferred method of solving a system of linear equations and why. Which method do you prefer? Do you think that matrices make the process easier? Or do you prefer not to use matrices? Once again thank you for any help given on this.

**algebra-math**

Create a system of linear equations. Explain the steps for solving a system of linear inequalities. Make a system of linear inequalities problem. Please help me with this?

**algebra-math**

exponential equation Solve for x 10^1^-x=10^4

**algebra**

Compound interest word problem. Suppose JJ has $1000 that he invests in an account that pays 3.5% interest compounded quarterly. How much money does JJ have at the end of 5 years? Formula: A= The amount of money earned after a certain length of time. P= The amount of money you...

**algebra**

Compound word problem Sarah decides to open up her own bank account for her schooling and wants to save money. She decides to put $500.00 in the savings account she is opening. The amount she earns has 8% interest and it’s compounded quarterly. How much would Sarah have ...

**algebra**

Logarithmic equation Solve for x: 3x=15

**algebra**

Solving exponential and logarithmic equation. An example of an exponential equation is: Solve for x: 5^x=125

**Math-college**

Create a compound interest word problem. Be sure to include the following, leaving one of the variables unknown: The amount of money earned after a certain length of time, A. The amount of money you start with, the principal, P. The interest rate, r. The amount of time over ...

**Math**

Please show work on how to solve.

**Math**

Create an exponential or logarithmic equation.

**Marh**

If 5000 is the total how do you figure an amount plus 6% to get the total of 5000

**Math-college**

(x + 3)(x -4) < 7, Why is this incorrect statement? I know the reason this is incorrect is because you cannot set each part equal to 7. Is there a more detailed reason? Thank you for the help.

**Math-college**

Find an? nth-degree polynomial function with real coefficients satisfying the given conditions. n=4; i and 3 i are zero; f(-2)=65 f(x)= An expression using x as the variable. Simplify your? answer.

**Math-college**

Can you please help with this one. Find an? nth-degree polynomial function with real coefficients satisfying the given conditions. n=4 2 i and 4 i are zeros; f(-1)=85 f(x)= ?(Type an expression using x as the variable. Simplify your? answer.)

**Math-college**

Explanation of why the following statement is incorrect. (x + 3)(x -4) < 7, and explain why it is incorrect. To solve (x + 3)(x -4) < 7, start by setting (x + 3) = 7 and (x - 4) = 7. Now solve the inequality. Provide a detailed explanation of why using this method to ...

**Math**

Explanation of how to find the asymptotes of the graph of a rational function.

**Math**

Hoping Henry can help on previous prob. A ball is thrown upwards from a roof top, 80ft above the ground. It will reach a maximum vertical height and then fall back to the ground. The height of the ball from the ground at time T is H, which is given by H= -16t2 + 64t +80. V = ...

**Quadratic Equation - Henry**

Hoping Henry can help on previous prob. A ball is thrown upwards from a roof top, 80ft above the ground. It will reach a maximum vertical height and then fall back to the ground. The height of the ball from the ground at time T is H, which is given by H= -16t2 + 64t +80. V = ...

**slope-intercept equation **

Write the? slope-intercept equation of the function f whose graph satisfies the given conditions. The graph of f is perpendicular to the line whose equation is 2x-5y-10=0 and has the same? y-intercept as this line. The equation of the function is?

**One-to-one function**

Explanation of why functions must be one-to-one functions to have an inverse?

**Quadratic Equation**

A ball is thrown upwards from a roof top, 80m above the ground. It will reach a maximum vertical height and then fall back to the ground. The height of the ball from the ground at time T is H, which is given by H= -16t2 + 64t +80

**Quadratic equation**

A theater is selling kids tickets for $2 each. The adult tickets are $5 each. The total sold is $500. How many kids tickets are sold if $50 in adult tickets are sold?

**College linear word equation**

Joe receives a base salary of $42,000 annually and a commission of 10% of the total sales he makes for the year. If Joe sales are $800,000 of goods. What is his total salary for the year?

**Bps science**

This is a physical change. All changes of state are physical changes.

**Calculus**

Find the limit x->pi/2^+ tan(x) I know the answer is -?, but I don't understand why. When I simplify to sin(x)/cos(x), I get 1/0^+.

**physics**

the floor of a lorry is 3m high, a plank 5m long is used as an inclined plan to raise some leading the maximum effort required to raise 200N load up the plane

**physics**

the floor of a lorry is 3m high, a plank 5m longis used as an inclined plan to raise some leading the maximum effort required to raise 200N load up the plane

**geometry **

A 4?-ft vertical post casts a 20?-in shadow at the same time a nearby cell phone tower casts a 115?-ft shadow. How tall is the cell phone? tower?

**Biology**

1) How can fishing cause expression changes and how can these changes be associated with changes at DNA level? 2) How do changes in gene expression hell fjsh adapt to different selective pressure? (I have a presentation about this, so it would be very useful if you linked some...

**Biology**

1) How can fishing cause expression changes and how can these changes be associated with changes at DNA level? 2) How do changes in gene expression hell fjsh adapt to different selective pressure? (I have a presentation about this, so it would be very useful if you linked some...

**calculus **

priya decides to go to the store which is 8km from her house. she first ran at a rate of 7km/h then walked the rest of the trip at a speed of 3km/h. if the total trip took 2hrs how many kilometers did she walk?

**Calculus**

Find the limit. lim 1/x^2-4 a)x->2^+ b)x->2^- c)x->-2^+ d)x->-2^- I'm completely lost. I don't understand how some answers are infinity and the others are negative infinity.

**Math**

A canadian television station shows 16 mins of commercials every hour between 8am and 11pm everyday. How many minutes of commercials are there on the station between 8 am and 11 pm in 365 days?

**MATH**

Calculate the area of the composite figure which is not drawn to scale. 17 cm 10 cm 22 cm 17 cm 19 cm the shape is a rectangle with a right triangle on its side

**Calculus**

At what point is the function y=csc(2x) continuous?

**Calculus**

If lim x->4 f(x)-5/x-2 =1, find lim x->4 f(x). I know the answer is 7, I need help on solving it. Thanks

**Math**

If you pay $950000 for a car and its value depreciates 10% per year how much will be its worth 5 years from now?

**Algebra**

A businessman has $1000 income from bonds bearing 4% and 5%. If the amounts invested at 4% and 5% were interchanged, he would earn $50 more annually. Find the total amount invested by the businessman.

**Human Relations**

inflection best relates to

**Math**

ABC is a triangle in which B=90 if AB=6 BC=8 then calculate the length of the third side of the triangle

**Physic**

If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting temperature was 100oC and the specific heat capacity is 386 J/kgK.

**phy**

1. A small fly wheel fitted to a motor with a moment of inertia of 80 kg m² slows down from 9000 rpm to 5500 rpm in 7.5 seconds. For the fly wheel, calculate: • The rate of deceleration which you can assume to be constant • The braking torque. 2.If the energy ...

**Please solve this riddle**

What always ends with a S, and always has a C in the middle, but if you never use it then it would start with an A.

**Algebraic word problem**

Three friends Alex, Ben, and Casey presented a young mathematician with a puzzle. They told him that the sum of their ages add up to 98 years. Double Alex’s age and add to Ben’s gives 84 years. The sum of three times Alex’s age and twice Casey’s age is 163...

**Math**

How do you make this problem true 4+3x5-1=22

**Calculus**

Let R be the first quadrant region enclosed by y=e^2, y=e^x and the y-axis. The area of region R is? I don't understand why is the interval is from [0-2]. Thanks

**Calculus**

The velocity of an object is given by v(t)=t(t^2-1)^(1/3) feet per second. Find the total number of feet traveled by the object in the time interval [0,3] seconds. I understand how to solve the problem, but I do not understand why is the interval now from [0-1] [1-3], and not ...

**Physics**

A magnetic field is uniform in a region of radius 10cm, and increasing at 0.02 Tesla/second. What is the magnitude of electric field in the region outside the magnetic field at radius of 15 cm?

**Calculus**

The position of a particle moving along the x-axis as a function of time,t, is given by x(t)=(1/6)t^3-t^2+3t-1 for t?0. The particle's velocity becomes three times its initial velocity when t=? I know v(t)=x'(t)=(1/2)t^2-2t+3=9, but I do not understand where does the 9...

**Math**

A ship is sailing due north. At a certain point the bearing of a lighthouse is N 40?E and the distance is 15.5. After a while, the captain notices that the bearing of the lighthouse is now S 54.9?E. How far did the ship travel between the two observations of the lighthouse.

**math**

A triangle has a base of 11 inches and a height of 8 inches. What is the area of the triangle?

**Chemistry 2**

Silicon carbide, SiC, is prepared by hearing silicon dioxide in the presence of graphite. Carbon dioxide is the by-product of the reaction. How many grams of silicon carbide can be formed from the reaction of 50.0 grams of graphite with 50.0 grams of silicone dioxide? Here is ...

**Chemistry 2 **

A scientist studying the reaction between decaborane (B10H18) and oxygen mixed 1.00 x 10^2 grams fo oxygen. Compute the masses of all substances present after the reaction went to completion, generating B2O3 and water as the only products.

**Math**

Mary is riding a merry-go-round, whose radius is 25 feet and which is turning 36 degrees per second. Seeing a friend in the crowd, she steps off the the outer edge of the merry-go-round and suddenly finds it necessary to run? At how many miles per hour does she have to run?

**Englsih**

I guess yo have already figured that mapping is the right answer. Though, you also contact the writers from the professional service if you are in trouble because of your essay. Check out please Prime writing service