Friday

October 21, 2016
Total # Posts: 3,652

**Calculus**

Let f be a function with second derivative given by f''(x)=sin(2x)-cos(4x). How many points of inflection does the graph of f have on the interval [0,10]? (A)Six (B)Seven (C)Eight (D)Ten (E)Thirteen

*October 21, 2016*

**Science **

is a an airplane flies with a constant speed of 500 miles per hour how long will it take to travel a distance of 500 miles

*October 19, 2016*

**Calculus**

The function f is continuous on the open interval (-π, π). If f(x)=cos(x)-1/xsin(x) for x≠0, what is the value of f(0)?

*October 19, 2016*

**Calculus**

Let f be a differentiable function defined on the closed interval [a,b] and let c be a point in the open interval (a,b) such that I.f'(c)=0 II.f'(x)>0 when a≤x<c III.f'(x)<0 when c<x<≤b Which of the following statements must be true? (A)f...

*October 17, 2016*

**Calculus**

If the functions f and g are defined for all real numbers and f is an antiderative of g, which of the following statements is NOT necessarily true? (A)If g(x)>0 for all x, then f is increasing (B)If g(a)=0, then f(x) has a horizontal tangent at x=a (C)If f(x)=0 for all x, ...

*October 17, 2016*

**Statistics**

A tobacco company claims that the nicotine content of its "light" cigarettes has a mean of milligrams and a standard deviation of milligrams. What is the probability that randomly selected light cigarettes from this company will have a total combined nicotine content...

*October 16, 2016*

**Sience**

One bottle of shampoo costs $6 for 8oz. A second bottle costs $4 for 5oz. Which has the lower unit rate?

*October 13, 2016*

**Physics urgent pleasw**

Stone is thrown vertically downward with an inital speed of 2.0m/s from height of 10m, determine time it takes to reach the bottom. Thanks!

*October 7, 2016*

**Math**

Let r(t) be a differentiable function that is positive and increasing. The rate of increase of r^3 is equal to 12 times the rate of increase of r when r(t)=?

*October 3, 2016*

**Math**

Just because you said that, I picked a building and I got 100%, thank you so much.

*September 20, 2016*

**Math**

The SI unit of measure for length-the meter-would be most appropriate when a. Measuring the wingspan of an insect b. measuring the height of a building. c. measuring the length of an ant. measuring the distance between two cities

*September 20, 2016*

**math**

Ben deposits $400 into an account that earns 5% interest compounded annually. Sam deposits the same amount into an account that earns 5% simple interest. Compare the account balances after 2 years.

*September 18, 2016*

**Chemistry**

Which of the following has no effect on the rate ofa reaction? a)degree of branching or size of reactant molecules b)value of Heat of reaction c)presence of a catalyst d)temperature of the reactants e) concentrations of the reactants

*September 17, 2016*

**Chemistry**

For the reaction C2H4Br2+ 3KI>C2H4+2KBr+KI3, when the rate of reaction is 2.0x10^-5, what is the rate of disappearance of KI?

*September 17, 2016*

**Social studies please check my answers!!!**

How was the government outlines in the Fundamental orders of Connecticut (FOC) different from the Government in Massachusetts? Select all that apply. A. The FOC gave the vote to all men who were property owners.•• B. The FOC limited the governor's power which ...

*September 14, 2016*

**Social studies**

Yes I know that but would B be the other answer?

*September 14, 2016*

**Social studies**

For questions 7 b and c?

*September 14, 2016*

**Social studies **

7. why were there fewer slaves in the backcountry of the southern colonies than those areas closer to the coast Colonists in the backcountry were primarily self sufficient Backcountry colonists were fundamentally opposed to slavery Colonists in the backcountry were poor and ...

*September 14, 2016*

**Social studies**

Can someone check my answers

*September 14, 2016*

**Social studies **

4. How was the government outlines in the Fundamental orders of Connecticut (FOC) different from the Government in Massachusetts? Select all that apply. A. The FOC gave the vote to all men who were property owners.•• B. The FOC limited the governor's power which ...

*September 14, 2016*

**Social studies**

So b and e??

*September 14, 2016*

**Social studies**

For questions 3 is it c and d ??

*September 14, 2016*

**Social studies **

1. What might be some typical jobs of colonists in the middle colonies?? Clockmaker •• Fishermen •• Wheat farmer•• Tobacco farmer Gun maker 2. what statement best describes the government relationship with England that was in the middle colonies ...

*September 14, 2016*

**Math geometry**

3x8x16= 384 ft^3

*September 14, 2016*

**Math**

16/2 =8 Always reduce 2/2 =1 8 : 1

*September 14, 2016*

**Math**

541227

*September 13, 2016*

**Math**

When you divide by 10000/6 thats would be the avg rate of climb per year. Your not looking for that. You need to find the geometric sequence for the number 326 to 10k with a annual growth rate of 6 years. You do this by taking 1.77,your given answer, and multiplying 326 by 1....

*September 13, 2016*

**Science**

Assuming your asking about bromothymol sulfone phthalein.

*September 13, 2016*

**Science**

Temperature does not make a difference since it test for pH levels. It will only turn yellow if the pH is 6.0 or lower.

*September 13, 2016*

**Math**

The sum of two numbers is 28 more than their difference. If their difference is 10, and 14 the less number, what is five times the greater?

*September 8, 2016*

**history**

#1 The Spanish thought it brought them more wealth and power. The Spanish saw it as proof that they were superior to Native Americans. #2 to seek wealth to spread Christianity #3 Colonists treated Native Americans poorly and many Native Americans died from starvation and ...

*September 8, 2016*

**math**

2 cars need 8days to remove sand. Additional car joined the work from day 4 to to reduce the time. when will they remove all the sand. -6 days -6 1/3 days -6 1/4 days -7 1/3 days please show steps Thanks in advance.

*September 4, 2016*

**Math**

Thank you Asyirah

*September 4, 2016*

**Math**

Two cars drive a total distance of 300km. The distance that car A drives 2/3 of total distance than car B drives. How far does car A drive?

*September 4, 2016*

**Math**

Thanks PsyDAG

*September 4, 2016*

**Math**

A cube has edge lengths of 5cm each. The cube weighs 0.54 kg. What is its specific weight

*September 4, 2016*

**Physics **

A hot-air balloon is rising straight up with a speed of 3.0 m/s. A ballast bag is released from rest relative to the balloon when it is 9.5 m above the ground. How much time elapses before the ballast bag hits the ground?

*September 2, 2016*

**Strength of Materials**

A solid block resting on a horizontal surface needed a pull of 40N inclined at angle 25 degree to the plane just to move it, but a push of magnitude 200N inclined at the same angle to the plane just moved the block. What is the weight of the block, and the coefficient of friction

*September 2, 2016*

**College Physics**

At what voltage would a 9 μF capacitor have the energy to lift 3 grams by 1 cm? i understand i need the0.5CV^2 equation however I don't know how to answer this

*September 1, 2016*

**Algebra**

Write an equation that has variables on both sides and has a solution of -3.

*September 1, 2016*

**Algebra**

Write the verbal statement as an equation. Then solve. 2 more than 3 times a number is 17. My answer: 5x3.4 = 17 is this correct

*August 30, 2016*

**math**

Can you please help me. 3/x-1=8

*August 29, 2016*

**Math**

One-fourth of the girls and one-eighth of the boys in a class retake their school pictures. The photographer retakes pictures for 16 girls and 7 boys. How many students are in the class?

*August 29, 2016*

**math**

Determine the balance of $8,750 is invested at an APR of 3.25% (simple interest) for ten years.

*August 28, 2016*

**Math**

Nine more than the product of 9 and Malik's age Use the variable m to represent Malik's age

*August 17, 2016*

**Math**

What does ; mean in math for evaluation of expressions

*August 15, 2016*

**Chemistry**

How many grams of hydrogen chloride acid containing 10% by mass of hydrogen chloride acid would be required to dissolve 13g of zinc

*August 14, 2016*

**Chemistry**

Calculate the mass of solid which would be precipitated when 35g of carbon 4 oxide are passed through a solution of calcium hydroxide Show your work

*August 13, 2016*

**Math**

Hi. This are non-linear equations and I don't know whether to equate them together to get the graph or something. Y^2-2x+2=0 and x-y-5=0 2x^2+3y^2=21 and 3x^2-4y^2=23

*August 11, 2016*

**Calculus - Need help please**

Given the following function, y=tan(pi-3x) 1)determine the interval for the principal cycle. (^ Type your answer in interval notation) 2)Then for the principal cycle, determine the equations of the vertical asymptotes 3)find the coordinates of the center&#...

*August 4, 2016*

**GP**

two consecutive terms of a GP are the 2nd ,4th and 7th terms of an A.P respectively.find the common ration of the GP

*July 27, 2016*

**Physics**

Horizontal electric power lines supported by vertical poles can carry large currents. Assume that Earth’s magnetic field runs parallel to the surface of the ground from south to north with a magnitude of 0.50××10^-4 Tesla and that the supporting poles are 38 m...

*July 19, 2016*

**Math **

Two airplanes leave Dallas, Texas traveling in opposite directions. One is traveling 28 mph faster than the other airplane. How fast is the faster airplane traveling if the two airplanes are 2,320 miles apart after 2 hours and 30 minutes?

*July 17, 2016*

**math**

the kitchen is 12 ft wide and 14 ft long how many six inch tile will I need to cover the floor

*July 11, 2016*

**Biology**

1. When and where was the first cell born? How did it happen? 2. What are the circumstances that make the appearance of the cell in this earth? 3. What are the differences between prokaryotic and eukaryotic cell? How about plant and animal cell?

*July 3, 2016*

**Math**

is .0046 ( °C) the same units as ( °C)^-1??? what is the conversion

*July 2, 2016*

**Chemistry**

Well at least I don't feel so bad for not being able to figure out the problem. Thanks for your help!

*June 26, 2016*

**Chemistry**

It is not stated. The above question is all the information given.

*June 26, 2016*

**Chemistry**

Sorry, I have been stuck on this question. I would appreciate if someone could help me out. Approx how many mL of 0.25M BaCl2 solution would be required to precipitate all the sulfate if we assume the sample is pure sodium sulfate? Assume that the density of the barium ...

*June 26, 2016*

**Math**

Can you help me with this calculation, if instead of paying $124K in four equal annual installments we pay this amount up front what would be PV ?

*June 23, 2016*

**Physics**

One ball has 7 times the mass and twice the speed of another. 1. How does the momentum of the more massive ball compare to the momentum of the less massive one? Find the ratio of the momenta. 2. How does the kinetic energy of the more massive ball compare to the kinetic energy...

*June 18, 2016*

**Physics**

A 5.00-kg object is attached to one end of a horizontal spring that has a negligible mass and a spring constant of 420 N/m. The other end of the spring is fixed to a wall. The spring is compressed by 10.0 cm from its equilibrium position and released from rest. Question: What ...

*June 16, 2016*

**Physics**

A 37.0-kg crate rests on a level floor. A horizontal force of 50.0 N accelerates the crate at 1.00 m/s2. Calculate the frictional force on the crate. Calculate the coefficient of kinetic friction between the crate and the floor. I got the normal force, 363 N. Now just need ...

*June 11, 2016*

**Physics**

Mike wants to make a free throw; he realizes that if the ball is exactly 20cm above the hoop as it hits the backboard at the top of its trajectory, it will go in. The free throw line is 4.5 m from the plane of the backboard and the hoop is 3 meters from the ground, Mike throws...

*June 9, 2016*

**Physics**

Question 1: Dan is pulling on his dog’s leash, the dog is pulling with 40N of force and Dan is pulling with 50N of force, how fast are they going after 2 seconds? Question 2: If you want to throw a rock 50m with a 1 m sling, what frequency do you need to rotate the swing ...

*June 9, 2016*

**Math**

You decide to buy a 60 in plasma TV. You borrow $4300 from the electronics store at1.8% per month simple interest, with no payments due for 2 years from the date of purchase. How much will you owe on the loan after 15 months?

*June 6, 2016*

**Physics**

A dart is thrown at a dartboard 3.90 m away. When the dart is released at the same height as the center of the dartboard, it hits the center in 0.555 s At what angle relative to the floor was the dart thrown?

*June 6, 2016*

**Physics**

A dart is thrown at a dartboard 3.90 m away. When the dart is released at the same height as the center of the dartboard, it hits the center in 0.555

*June 6, 2016*

**Earth Science**

Why are boats more efficient than airplanes? They use less fossil fuels to move

*June 4, 2016*

**math**

To avoid a pond, Tom must walk 10 meters south and 24 meters east. To the nearest meter, how many meters would be saved if it were possible to walk through the pond? 10^2 + 24^2 = C^2 100 + 576 + C^2 C^2 = 676 C^2 = SQRT of 676 or 26 meters Not sure how to solve. I thought ...

*June 4, 2016*

**math**

To avoid a pond, Tom must walk 10 meters south and 24 meters east. To the nearest meter, how many meters would be saved if it were possible to walk through the pond? 10^2 + 24^2 = C^2 100 + 576 + C^2 C^2 = 676 C^2 = SQRT of 676 or 26 meters

*June 4, 2016*

**Math**

A 104 ft. ladder is leaned against a wall. If the base of the ladder is 40 ft. from the wall, how high up the wall will the ladder reach? 104ft.^2 + b^2 = 40ft.^2 10,816 + b^2 = 1,600 0 + b^2 = 10,816 - 1,600 = 9,216 C^2 = SQRT of 9,216 or 96ft.

*June 4, 2016*

**math**

A 104 ft. ladder is leaned against a wall. If the base of the ladder is 40 ft. from the wall, how high up the wall will the ladder reach? 104ft.^2 + b^2 = 40ft.^2 10,816 + b^2 = 1,600 0 + b^2 = 10,816 - 1,600 = 9,216 C^2 = SQRT of 9,216 or 96ft.

*June 3, 2016*

**math**

You are correct D.M=14

*June 2, 2016*

**Math Please Help Quick**

The probability of winning a game is 20%. If you play 20 times, how many times should you expect to win?

*June 2, 2016*

**math**

I need help solving this math problem I am so lost when it comes to these problems. Which is the difference of 25 1/8 - 12 3/4

*June 1, 2016*

**mathss**

a, b, c, d, e, f, and h are numbers such that a × b × c = 100, a × d × e = 0 and b × f × h = 0. Which of the following could be true?

*May 30, 2016*

**Calculus**

Solve the differential equation dy/dx = √[(x^3)(y)] with initial conditions x = 1, y = 2 so far i got y = (x^5)/25 + c so do i plug in 2 = (1^5)/25 + c 2 - (1/25) = c c = 49/25 = 1.96 is this correct?

*May 26, 2016*

**Math**

the larger of two numbers is three times the smaller number, and their difference id 34. find the two numbers.

*May 25, 2016*

**physics**

Suppose the stone is thrown at an angle of 40.0° below the horizontal from the same building (h = 42.0m) as in the example above. If it strikes the ground 36.7 m away, find the following. (Hint: For part (a), use the equation for the x-displacement to eliminate v0t from ...

*May 20, 2016*

**Organic Chemistry**

I'm sorry, of the product: Iron-salicylate complex.

*May 20, 2016*

**Organic Chemistry**

What volumes of 0.00250M salicylic acid solution and 0.1M ferric chloride solution would you need to make 50mL of a 0.00350M solution?

*May 20, 2016*

**English**

Thank you.

*May 19, 2016*

**English**

Identify the sentence in which the underlined verb does not agree with its subject. Everyone on the team (works) together well. Both of them (are looking) forward to the field trip. Neither of the boys is (excited) about playing football. One of the girls (are) going to enter...

*May 19, 2016*

**English/Language Arts**

Thank you

*May 19, 2016*

**English/Language Arts**

On a Works Cited page, which of the following should be in italics? title of a book************** title of a webpage title of a short story title of a newspaper article

*May 19, 2016*

**English/Language Arts**

C does not have a period at the end

*May 19, 2016*

**English/Language Arts**

Which of the following parenthetical citations is placed and punctuated correctly? A)The only casualty on Lewis and Clark's trip died from appendicitis (Davis 104). B)(Davis, 104) Kenneth Davis explains that the only casualty on Lewis and Clark's trip died from ...

*May 19, 2016*

**English/Language Arts**

Thank you Reed

*May 19, 2016*

**English/Language Arts**

A _____ includes all the works a writer used in the actual report, including direct quotes. footnote bibliography Works Cited page********** parenthetical citation

*May 19, 2016*

**English**

You are correct its a metaphor

*May 19, 2016*

**English**

How does the boldness Odysseus shows in the Cyclops’s cave drive subsequent plot events? A)Several of Odysseus’s men are eaten. B)Odysseus and his men spend the night in the Cyclops’s cave. C)Odysseus gives the Cyclops wine to drink. D)Odysseus and his men ...

*May 18, 2016*

**English**

tyvm

*May 18, 2016*

**English**

Read the following quote from Betty Bonham Lies’s retelling of the myth of Orpheus and Eurydice. When Orpheus made music, all the world stopped to listen. Wild beasts drew near him, so entranced they put aside their fierceness. Trees gathered around to hear his beautiful...

*May 18, 2016*

**calculus**

how did you get 4x^2-7x-10?

*May 18, 2016*

**calculus**

use logarithmic differentiation to find dy/dx for: [(x^2)(e^2)(x)] / [3√(2x-5)]

*May 18, 2016*

**Ms Sue Please**

ok thanks my question is in Science. Thanks you. I'm sorry I thought I had done something to you <3

*May 17, 2016*

**Ms Sue Please **

Why are my questions always skipped?

*May 17, 2016*

**Science**

Suppose the velocity of a car is 10 m/s at t = 0 s, and is 20 m/s at t = 30 s. Which of the following must be true? The car had a positive instantaneous velocity in the interval. The car had a positive instantaneous acceleration at each moment in the interval. The car had a ...

*May 17, 2016*

**Economics**

Checking to see if I got these right. The ones I selected are marked with an * 1. The price paid for the use of capital is called (Points : 1) mortgage payment. rent. profit. wages. *interest. 2. Capital consists of (Points : 1) stocks and bonds. the assets of the government...

*May 15, 2016*