Monday

September 26, 2016
Total # Posts: 1,131

**physics**

A bullet leaves a rifle with a muzzle velocity of 553 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.648 m. Determine the acceleration of the bullet (assume a uniform acceleration).

*September 22, 2016*

**math**

a lighthouse is 30m high. the angle of elevation from a ship to the top of the tower is 17 degrees. what is the horizontal distance from the ship to the lighthouse?

*September 20, 2016*

**Pre cal**

Fine a third degree polynomial function f(x) with real coefficients that has 4 and 2i are zeros and such that f(-1) =-50 4 21 -2i (x-4)(x-2i)(x+2i) (x-4)(x2+4) x3-16+4x-4x2 (x3-4x2+4x-16) -50=a(-1-4-4-16) -50=.25 a=2 Not understanding, please help

*September 4, 2016*

**algebra**

The area of a rectangle is 72 cm². The length. l, of the rectangle is 6 cm longer than the width, w. What is the width of the rectangle? 10 cm 8 cm 6 cm 2 cm

*August 26, 2016*

**math**

What is x on a 45,45,90 triangle if the hypotenuse is 145?

*August 24, 2016*

**physics**

An infinitely-long wire with resistivity 2.0*10^-8 ohm*m initially has 1.5 A of "conduction" current flowing through it. When the emf connected to the wire is turned off, this current stops in time of .6ns. Estimate the amount of displacement current created in the ...

*July 20, 2016*

**Physics**

I am uncertain on how to use gauss's law to derive the expression for the electric fields

*June 15, 2016*

**Physics**

An infinitely long, solid insulating cylinder with radius a has positive charge uniformly distributed throughout it with a constant charge per unit volume p. a) using Gauss's law, derive the expression for the electric field inside the cylinder r<a from the axis of the ...

*June 15, 2016*

**mathematics**

so instead of putting 40 squared i would put 40^2 correct? Thank you!

*June 9, 2016*

**ALGEBRA**

I dont understand

*June 9, 2016*

**ALGEBRA**

what about the rest?

*June 9, 2016*

**ALGEBRA**

Create a rational function with a linear binomial in both the numerator and denominator. Part 1. Graph your function using technology. Include the horizontal and vertical asymptotes and the x- and y-intercepts on your graph. Label the asymptotes and intercepts. Part 2. Show ...

*June 9, 2016*

**Algebra**

is that the answer?

*June 9, 2016*

**Algebra**

Create a system of equations that includes one linear equation and one quadratic equation. Part 1. Show all work to solving your system of equations algebraically. Part 2. Graph your system of equations, and show the solution graphically to verify your solution.

*June 9, 2016*

**Algebra**

Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certificates are given to students whose scores are in the top 2% of those who took the test. This means that they scored better than 98% of the other test ...

*June 9, 2016*

**Math**

Ms. Sue?

*May 4, 2016*

**Math **

Maria wants to cover the box shown below with paper.Which of the following could be the dimensions of the paper so that Maria has enough to cover the box, including the ends, with a little left over? Shape: Rectangular Prism Length:8 in Width: 2 in Height: 2 in A) 8 in x 4 in ...

*May 4, 2016*

**Math**

Ms. Sue? Reed? Anyone?

*May 4, 2016*

**Math**

Maria wants to cover the box shown below with paper.Which of the following could be the dimensions of the paper so that Maria has enough to cover the box, including the ends, with a little left over? Shape: Reactangular Prism Length:8 in Width: 2 in Height: 2 in A) 8 in x 4 in...

*May 4, 2016*

**Math**

thanks!

*May 3, 2016*

**Math**

Find the surface area of the prism. Rectangular Prism L=13 m W=6 m H=5 m A) 48m B)346m**** C)780m D)195m Please help!

*May 3, 2016*

**Chemistry- polarity**

Is 2,4-Hexadiyne-1,6-diol a polar or non-polar compound? I think it is non-polar, based on the the high retention factor (0.89) I got from the TLC.

*May 1, 2016*

**LA**

thanks so much.

*April 29, 2016*

**LA**

This summer, we will host an exchange student from Ecuador. What is the prepositional phrase in the sentence? a) This summer b) we will host c) an exchange student d) from Ecuador **** please help!!

*April 29, 2016*

**LA (Ms. sue?)**

Thanks!

*April 27, 2016*

**LA (Ms. sue?) **

The phrase closest in meaning to destined for is a) meant for* b) married to c) interested in d) loved by please help idk if it's a or c!! Ms.Sue?

*April 27, 2016*

**math**

Solve each equation by using the Quadratic Formula. Round to the nearest tenth if necessary. 1.6x2 + 2x + 2.5 = 0

*April 27, 2016*

**math**

How is the squareroot of -1 classified?

*April 22, 2016*

**Social studies**

Thanks, Ms.Sue

*April 20, 2016*

**Social studies**

Byzantine civilization was based on Roman traditions at first, but eventually was much more influenced by _________ culture. German Greek** Slavic Egyptian I need help asap!

*April 20, 2016*

**math**

| x + 1 | + 6 = 3

*April 20, 2016*

**Geometry**

Altitudes $\overline{XD}$ and $\overline{YE}$ of acute triangle $\triangle XYZ$ intersect at point $H$. If the altitudes intersect at a $123^\circ$ angle, and $\angle YXH = 26^\circ$, then what is $\angle HZX$ in degrees?

*April 19, 2016*

**Geometry**

Altitudes $\overline{XD}$ and $\overline{YE}$ of acute triangle $\triangle XYZ$ intersect at point $H$. If the altitudes intersect at a $123^\circ$ angle, and $\angle YXH = 26^\circ$, then what is $\angle HZX$ in degrees?

*April 19, 2016*

**help ms. sue/ science**

how is a parallel circuit different from a series circuit? Need help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

*April 15, 2016*

**L.A.**

Never mind, the answers are: 1.D 2.A 3.B

*April 15, 2016*

**L.A.**

1.? 2.A 3.D 1. What changes might help "Happiness is a charming Charlie Brown at orlando rep" to take on the general purpose of "You're a good man, Charlie Brown?" A. more facts and examples B. appeals to logic C. a formal style and persuasive language ...

*April 15, 2016*

**plz help**

Soooooooooooooooooooo...

*April 15, 2016*

**Ela**

If you are referring to the LA quick check on "you're a good man, Charlie brown" for Connexus, the answers are: 1. A,B,C,D (YOU CHOOSE) 2.B 3.B Hope that helps!

*April 14, 2016*

**Health**

The following is a health benefit of a nicotine substitute: it is cheaper than regular cigarettes so you can still get the benefit of nicotine at a lower cost. true false** I have no clue. can someone please help me?

*April 12, 2016*

**Healthcare Statistic**

The HIM coding supervisor agrees to pay a new graduate $13.50 per hour. This is a full-time coding position at 2,080 hours per year. The cost for a full-time employee's fringe benefits is 24 percent of the employee's salary. How much must the supervisor budget for the ...

*April 10, 2016*

**History**

Where are your answers?

*April 6, 2016*

**Science**

Wait no, is it C?

*April 6, 2016*

**Science**

Why is a gas able to flow? It's particles have melted and can move around. It's particles have high viscosity and can move around. It's particles have enough energy to move around. It's particles have enough pressure to move around.** not sure of the answer. ...

*April 6, 2016*

**Math**

Oh okay thanks! Sorry that was such a dumb question lol my brain was not working.

*April 6, 2016*

**Math**

Similar polygons are _____ the same size. always sometimes** never I'm having a brain fart. ahh! please help!

*April 6, 2016*

**History (check answer!)**

I'm late but the answer is C

*April 6, 2016*

**History**

thank you!

*April 6, 2016*

**History**

The Roman Empire was largest during which emperors rule? Hadrian Nerva Marcus Aurelius Trajan*** please help!

*April 6, 2016*

**Check answers?**

A!

*April 6, 2016*

**Math**

Because if the room is square, and the walls are 14 ft long, 14 * 14 is 196 square ft. 90 times 3 is 270, and it is the least number there, and 2 (even though it is not there, it would equal 180). Am I right?

*April 4, 2016*

**Math**

Each pail of plaster covers 90 square feet of ceiling. What is the least number of pails of plaster you would need to buy to cover the ceiling of a square room with walls 14 feet long? 5 pails 6 pails 3 pails (my answer) 4 pails

*April 4, 2016*

**math**

BOOKS A library contains 2000 books. There are 3 times as many non-fiction books as fiction books. Write and solve a system of equations to determine the number of non-fiction and fiction books.

*April 4, 2016*

**Math**

51.75 cubes

*March 26, 2016*

**Science**

I'm late, but yes, it's d.

*March 16, 2016*

**Calculus Related Rates**

A balloon, 50 feet from an observer, is rising at 20 ft/sec. At 5 seconds after lift off 1. How fast is the distance between the observer and the balloon changing? 2. How fast is the angle of elevation changing? I need help on both questions. Thanks in advance smart people!!

*March 14, 2016*

**Algebra**

Is .0010001... Rational?

*March 13, 2016*

**math**

B is my guess but I need help too

*March 11, 2016*

**math**

it might be b I'm not sure

*March 11, 2016*

**Geometry**

I think John is right

*March 5, 2016*

**Calculus Related Rates**

Two people leave from the same spot and walk at 4ft/sec going north and 5ft/sec going northwest. At 30 seconds, how fast is the distance between them changing?

*March 3, 2016*

**Calculus Related Rates**

Mulch is dumped into a pile with height always 1/3 the diameter at a rate of 30 ft^3/hr. How fast is the height increasing when it is 6 ft tall?

*March 3, 2016*

**math**

a private jet flies the same distance in 6 hours that a commercial jet flies in 4 hours.if the speed of the commercial jet was 143 mph less than 2 times the speed of the private jet, find the speed of each jet

*February 27, 2016*

**algebra**

BASEBALL The equation h = –0.005x2 + x + 3 describes the path of a baseball hit into the outfield, where h is the height and x is the horizontal distance the ball travels. a. What is the equation of the axis of symmetry? b. What is the maximum height reached by the ...

*February 26, 2016*

**Adelphi**

Which is a guideline for doctors pursuing research with human subjects?

*February 23, 2016*

**Physical Science**

Which SI unit is used to measure length? A. meters B. newtons C. grams D. liters

*February 9, 2016*

**algebra**

x^2 + x - 12 What is the minimum value of y?

*February 4, 2016*

**algebra**

Determine whether each expression is a polynomial. If it is a polynomial, find the degree and determine whether it is a monomial, binomial, or trinomial. 1. 7a^2b + 3b^2 – a^2b 2. 6g^2h^3k

*February 3, 2016*

**physics **

In a thundercloud there may be an electric charge of 46 C near the top of the cloud and −46 C near the bottom of the cloud. If these charges are separated by about 6 km, what is the magnitude of the electric force between these two sets of charges? The value of the ...

*January 28, 2016*

**Calculus**

Please help me find the limit: lim x--> 2 ((1/3)-1/sqrt(x))/)x-9)

*January 24, 2016*

**math**

what is a prime number?

*January 16, 2016*

**Algebra 1**

A should be correct.

*January 5, 2016*

**Math???Plase Help**

7/9

*January 5, 2016*

**Math**

A group of 21 people have enough food for 24 days. If 15 additional people join them, they would have enough food for only___days. (Assume everyone eats the same amount of food each day)

*January 4, 2016*

**Math**

During its first week of business, a market sold a total of 108 apples and oranges. The second week, five times the number of apples and three times the number of oranges were sold. A total of 452 apples and oranges were sold during the second week. Determine how many apples ...

*December 18, 2015*

**Algebra**

gilbert plans to invest 9% and 11% annually. if he want to earn$1200 annually how much should he invest in each bond.

*December 16, 2015*

**Statistics**

A machine fills 12 ounce bottles with soda. For the machine to function properly, the standard deviation of the sample must be less than or equal to 0.02 ounce. A sample of 8 bottles is selected, and the number of ounces of soda in each bottle is given. At alpha +0.05, can you...

*December 6, 2015*

**Science...anyone?**

Thanks, you saved my grade...um...the Answerer. P.S.: Are you a wiz kid?

*November 30, 2015*

**Science...anyone?**

1. Which of these sources of energy is NOT renewable? a.) wind b.) solar power c.) hydroelectric power d.) natural gas 2. Air can be polluted by _____. a.) tiny particles of soot b.) carbon monoxide c.) sulfuric acid d.) all of the above 3. Which of the following can cause ...

*November 30, 2015*

**Finance**

Homework Help: Finance Posted by Sally on Monday, November 23, 2015 at 8:02pm. The answer given by Finance - Anonymous , Monday, November 23, 2015 at 8:12pm Add the tax to the "before tax" to get the answer was not helpful. I am hoping someone can give me a guided ...

*November 24, 2015*

**Finance**

Anonymous, I still don't understand.

*November 23, 2015*

**Finance**

Jiminy's Cricket Farm issued a 30-year, 7.2 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The book value of this debt issue is $103 million. In addition, the company has a second debt issue, a zero coupon bond with 9 ...

*November 23, 2015*

**Geometry**

The coordinates of a triangle are X(0,0, Y(2h,2h), and Z(4h,0). Is the triangle a right triangle? Show work to support your answer. I don't really know how to solve this, or show m work.

*November 17, 2015*

**c++ programming **

I need some help with my homework please Write a C++ program to prompts the user to enter the first character of shape name (Cycle, Rectangle, or Triangle). Then calculate the area of that shape. „h If the user enters another character the program should print: You should...

*November 13, 2015*

**math**

x=$106

*November 11, 2015*

**math 6**

Javier solves three math problems in five minutes. He has 20 math skill-work questions for homework, and he wants to complete them before talking with friends. How many minutes will javier take to complete 20 math skill work questions

*November 5, 2015*

**math**

GEOMETRY The formula for the perimeter of a rectangle is P = 2 + 2w, where is the length and w is the width. A rectangle has a perimeter of 24 inches. Find its dimensions if its length is 3 inches greater than its width.

*November 3, 2015*

**math**

Dracula, Frankenstein, Mummy, Gilda and Zelda are all having a Halloween party. Each of them has given an invitation to all of the others. How many invitations have been given out?

*October 28, 2015*

**Dallas can**

2322

*October 27, 2015*

**physics**

Power applied to a particle varies with time as P=(3t^2-2t+1)W. Find the change in kinetic energy between t=1s and 4s.

*October 27, 2015*

**math**

8 - (-n) = 1

*October 21, 2015*

**science**

is tap water a pure substance..?

*October 15, 2015*

**science**

is a polyatomic considered a compound?

*October 15, 2015*

**math**

Aren't we suppose to get rid of the -2 to get x.. by dividing on both sides?

*September 26, 2015*

**math**

3x-2y=8 5x-2y=9 using elimination method.. please help.

*September 26, 2015*

**physics1**

Vector A has a magnitude of 6 and is at an angle of 32.4 degrees measured counter-clockwise from the x axis. Vector B has a magnitude of 12 and is at an angle of 113.8 degrees measured counter-clockwise from the x axis. Vector C has a magnitude of 17 and is at an angle of 180...

*September 24, 2015*

**physics**

Copy of Vector A has a magnitude of 5 and is at an angle of 29.7 degrees measured counter-clockwise from the x axis. Vector B has a magnitude of 12 and is at an angle of 115.4 degrees measured counter-clockwise from the x axis. Vector C has a magnitude of 18 and is at an angle...

*September 24, 2015*

**Calculus 3! ASAP please**

Also, I do not understand how to add magnitudes. Please help. Let u and w be vectors in R3 such that ||u||=3 and ||w||=2 and the angle between the vectors is pi/2; what is the value of ||3u-4w||? - answer is sqrt(145)

*September 22, 2015*

**Calculus 3! ASAP please**

1.A given line is described by the system of equations x=2t+7; y=-3t+4; z=5-t; find the equation of a line parallel to the given line and which contains the point (1,1,0). 2.Let a=<0,6,2> and b=<0,2,4>, then the component of a parallel to b is given by? - the ...

*September 22, 2015*

**Algebra 2**

Did I solve this complex rational expression correctly? (2/3)-(x)/(2/3)+(x) 2/3-x = 2/3-x(3)/1(3)= (-x)+(2/3) (2/3)+ (x)= 2/3 + x(3)/1(3)= (x)+(2/3) (-x)+(2/3)/(x)+(2/3) = -(3x-2)/(3x-2)

*September 12, 2015*