Friday

February 24, 2017
Total # Posts: 1,991

**chemistry**

With reference to collision theory account for the colour change that occurred when HCl was added to K2CrO4 (Cromate)

*February 19, 2017*

**chemistry**

number of moles = mass/Molar mass N=m/Mr

*February 19, 2017*

**Math (Business)**

I haven't don't simple interest in a while so don't quote me on this but I think you're missing the T part of the equation eg. P x R x T = I. rate is 18x31/365, P is ... but where is T in your final equation? hope that was relevant.

*February 18, 2017*

**Math-Statistics**

CAN SOMEONE HELP ME WITH THIS? A recent study found that, of the 1771 participants aged 12 to 19 in the National Health and Nutrition Examination Survey, 19.5% had some hearing loss (defined as a loss of 15 decibels in at least one ear). This is a dramatic increase from a ...

*February 14, 2017*

**physics**

That gives me the wrong answer according to the website

*February 4, 2017*

**physics**

The distance between two successive crests of a certain transverse wave is 1.13 m. 20 crests pass a given point along the direction of travel every 18.6 s. Calculate the wave speed. Answer in units of m/s. So far I have gotten 1.22 for my answer by 20/18.6 x 1.13. I also tried...

*February 4, 2017*

**History**

Which of the following best describes why sit-down strikes resulted in success for workers? A Owners lost more money the longer strikers occupied the factories. B The strikes forced workers to agree to management’s terms. C The strikes allowed workers to form new company ...

*February 3, 2017*

**Algebra II**

Thanks Mr.Bob & Mr. Steve.. AGAIN. I honestly need to practice this more obviously but 4 more months till graduation and everyone on here has been helping me since the 9th grade so it's a huge thank you.

*February 1, 2017*

**Algebra II**

Find the equation of the line that passes through the points (1,4) and (2,-8). Question options: y = -3x + 9 y = 6x + 5 y = -12x + 16 y = 12x - 8 < this one is wrong.. I thought I had it right so how do I find the correct answer? i'm not getting any of the other answer ...

*February 1, 2017*

**Algebra II (plz)**

Thank you! im sorry.

*February 1, 2017*

**Algebra II (plz)**

Find the slope of the line that contains the two points (3,2) and (1,-4). m = - 3 m = - 1/3 <-- ? m = 3 m = 1/3 Find the slope of the line that contains the points (-2, 4) and (-4, 6). m = -1 m = 1 <-- m = - 1/3 m = 1/3 Find the equation of the line that passes through ...

*February 1, 2017*

**Algebra **

Find the slope of the line that contains the two points (3,2) and (1,-4). m = - 3 m = - 1/3 <-- ? m = 3 m = 1/3 Find the slope of the line that contains the points (-2, 4) and (-4, 6). m = -1 m = 1 <-- m = - 1/3 m = 1/3 Find the equation of the line that passes through ...

*February 1, 2017*

**Algebra (check answers plz)**

Thank you and yes I honestly do... it's hard for me at least but I do try.

*February 1, 2017*

**Algebra (check answers plz)**

Find the slope of the line that contains the two points (3,2) and (1,-4). m = - 3 m = - 1/3 <-- ? m = 3 m = 1/3 Find the slope of the line that contains the points (-2, 4) and (-4, 6). m = -1 m = 1 <-- m = - 1/3 m = 1/3 Find the equation of the line that passes through ...

*February 1, 2017*

**math**

John earn scores of 82%, 74%, and 78% on three mid-term tests in his Math course. To earn a B, his overall course mark needs to be at least 80% and less than 90%. The overall course mark is 1 3 (mid-term average) plus 2 3 of the final examination. In what range of values can ...

*January 30, 2017*

**Algebra**

spencer deposit 540 in a bank account that pays annual simple interest rate of 4.5%. How much interest will he earn after 3 years? a.about $73.00 b.about $7,290.00 c about $126.00 <-- im not sure d.about $200.00 How do I figure this out?

*January 26, 2017*

**Algebra**

ohhh thanks! sorry for posting this question twice.

*January 26, 2017*

**Algebra**

Thanks... can you help me with this question also? spencer deposit 540 in a bank account that pays annual simple interest rate of 4.5%. How much interest will he earn after 3 years? a.about $73.00 b.about $7,290.00 c about $126.00 <-- im not sure. d.about $200.00

*January 26, 2017*

**Algebra**

What is the value of (fog)(-5) f(x)=x-10 ; g(x)=x2-3 a. (fog)(-5)= -38 b. (fog)(-5)=12 <--- ? c. (fog)(-5)=222 d.(fog)(-5)= -228

*January 26, 2017*

**English**

I didn't get any help.. I read the poem but still can't find the central theme and also I can't find a modern version of sonnet 16 by Elizabeth.

*January 12, 2017*

**English**

Can someone help me come up with the a central theme for sonnet 15? PLEASE and also help me find a modern version of sonnet 16 by Elizabeth B.

*January 12, 2017*

**English**

Thanks Ms. Sue See I was thinking for 27 that it's when you love someone you can't stop thinking about them? Now for 15 I honestly don't know....

*January 11, 2017*

**English**

Hello can someone help me come up with the central theme for sonnet 15 and 27 by Shakespeare and lastly sonnet 27 by Elizabeth Barrett... please and thanks!

*January 11, 2017*

**Math**

Triangle LMG has side lengths of 7cm, 24 cm, and 25 cm. Which type of triangle is LMG? a.right <--- or b? b.obtuse c.acute d.equilateral Bethel Park is 28 miles directly west of Jeanette and 10.3 miles directly south of Pittsburgh. Which is the length of the road that runs ...

*January 9, 2017*

**science **

did anyone do the lab for product that conserve resources unit 4 lesson 5

*January 6, 2017*

**electrochemistry gr 12**

Using the following spontaneous reactions, classify the 3 metals involved (Cr, Sn, Al) according to increasing reductant properties. a) 2Cr + 3Sn2+ ----> 2Cr3+ + 3Sn b) Al + Cr3+ ----> Al3+ + Cr

*January 4, 2017*

**electrochemistry gr 12**

Will there be a reaction is a magnesium strip is placed in a solution containing Ca2+ ions?

*January 4, 2017*

**science**

the body system responsible for the exchange of gases between the body and the enviroment is the

*January 3, 2017*

**Math**

Ms Rowe needs to make a box to hold 729 cm^3. She needs the box to have a lid. What are the dimensions of the box that would minimise the surface area?

*December 15, 2016*

**Math**

what is the measure of the angle of an arc that is 25 cm long with a radius of 7?

*December 12, 2016*

**art**

My internet is down for my computer and I can only use data. I can't go back for my notes 1. This drawing was made using what natural resource? (1 point) A. harvesting the clay from a corn plant B. making the clay from water and pigments C. making the clay by mixing sand ...

*December 6, 2016*

**Calculus**

Evaluate ?tan(3x)dx

*November 22, 2016*

**Calculus**

Evaluate ??(x^3+1)dx

*November 22, 2016*

**Fibonacci Sequence**

The sequence < un > is defined by the recurrence Un+1 = 3Un+1\5Un+3 initial condition of u1 = 1: Need to show un in terms of Fibonacci / Lucas numbers

*November 16, 2016*

**Math**

The sequence < un > is defined by the recurrence Un+1 = 3Un+1\5Un+3 initial condition of u1 = 1: Need to show un in terms of Fibonacci / Lucas numbers

*November 16, 2016*

**Science**

Four students dissolved 30g of salt in a 200ml solution of water.Each student heated his or her water solution to a different temperature ( Marcus had 10 and tyra had 25 Luis had 50 and Andrew had 75) which student most likely had the solution with the fastest dissolving rate ...

*November 8, 2016*

**4th grade math**

a 4 digit whole number is added to a 2 digit whole number. there is a largest possible sum and a smallest possible sum. what is the difference between those two sums?

*November 8, 2016*

**Calculus**

A carpenter wants to make an open-topped box out of a rectangular sheet of tin 24 inches wide and 45 inches long. The carpenter plans to cut congruent squares out of each corner of the sheet and then bend the edges of the sheet upward to form the sides of the box. If the box ...

*November 8, 2016*

**Calculus**

Two sides of a triangle are 4 inches long. What should be the angle between these sides to make the area of the triangle as large as possible?

*November 5, 2016*

**Math**

You have a $250,000 mortgage. The 30- year fixed rate is 8.5%. You have had your house for ten years. You have 20 years remaining on your mortgage. The new 15-year mortgage rate is 5.5%. 1) What is your mortgage payment, principal and interest on your current mortgage? 2) What...

*November 3, 2016*

**Math**

You have a $200,000 mortgage. You have had the house for one year. The rate is 7.5% fixed for 30 years. Rates have come down and you are thinking of refinancing at the new rate of 6%. 1) What is your mortgage payment and interest on your current mortgage? 2) What would your ...

*November 3, 2016*

**finance**

You want to purchase a car. It costs 25,000. You have 3,000 that you have saved up for a down payment. You can go with the 5 year car and 60 month car loan. The car manufacture is offering a special deal on your car. You can get zero percent financing or 2,000 cash back. If ...

*October 23, 2016*

**finance**

You have only saved 2,000. You are going to trade in your old car and get a new one. The dealership has offered you 3,000 for your trade, and you have accepted their offer. The car you want to buy costs 23,000 but you talked them down to 21,000. The dealership is offering you ...

*October 23, 2016*

**physics**

A 64.8 g drink is left on a turntable causing it to turn with an angular speed of 8.50 rad/s. If the drink has coefficients of friction of μs = 0.890 and μk = 0.500 with the turntable, what is the furthest distance that the drink could have been placed from the ...

*October 23, 2016*

**Social studies**

What three features do people use to describe weather and climate

*October 18, 2016*

**algebra**

use the identity a^2+b^2=(a+bi)(a-bi) to factor 16y^2+1

*October 18, 2016*

**Math**

If one liqid gallon is 231 cubic inches, how many gallons of juice would fit in a container that is 2 ft. by one foot by 1 foot.

*October 16, 2016*

**Physics**

A driver in a car, originally moving at 13.1 m/s, applies the brakes until the car comes to a stop. The car moves a distance of 34.1 m while braking. How much time did it take for the car to stop? Assume constant acceleration during braking.

*October 4, 2016*

**Physics**

A dart is being thrown at a board that is 2.00 m away. When it hits the board it is 0.306 m below the point where it was aimed and it was thrown at 8.00 m/s. How long was the dart in the air?

*September 26, 2016*

**check my work**

1. Which of the following provides the best definition of a strict constructionist interpretation of congressional power? (1 point) Congress must have more powers than the states. Congress should only use implied powers when directly connected to expressed powers. Congress ...

*September 23, 2016*

**history (check my work)**

would 1. be C

*September 23, 2016*

**history (check my work)**

. Which of the following provides the best definition of a strict constructionist interpretation of congressional power? (1 point) Congress must have more powers than the states. Congress should only use implied powers when directly connected to expressed powers. Congress ...

*September 23, 2016*

**check my work**

please

*September 22, 2016*

**check my work**

1. Which of the following provides the best definition of a strict constructionist interpretation of congressional power? (1 point) Congress must have more powers than the states. Congress should only use implied powers when directly connected to expressed powers. Congress ...

*September 22, 2016*

**check my work**

The table below shows your expenses. Use the information in the table to answer questions 13. Expense Type Cost mortgage (monthly) $1,850.00 groceries (biweekly) $113.50 telephone (monthly) $96.80 credit card (monthly) $100.00 car payment (monthly) $389.45 car ...

*September 22, 2016*

**check my work**

1.B 3.C

*September 22, 2016*

**check my work**

1. Which of the following best exemplifies how Congress’s use of its weights and measures powers plays an important role in business transactions? (1 point) With uniform and consistent standards, producers are allowed to charge different prices for a pound of flour. With ...

*September 22, 2016*

**Ss**

Oh, is it B that was wrong.. because i know that people couldn't vote until the declaration of independance .

*September 16, 2016*

**Ss**

Which one??

*September 16, 2016*

**Ss**

Why was the Declaration of Independance important? Select all that apply. >it set up the U.S government >it explained the ideals of liberty, justice, and equality**** >it announced that American colonies were separate from great britian >it gave Americans the right...

*September 16, 2016*

**math**

What is the conjugate of the complex number 5 - 4i?

*September 13, 2016*

**math**

Perform the operation and write the result in standard form. 9i - (5 + 3i)

*September 12, 2016*

**Algebra**

A teacher's union has negotiated a uniform salary increase for each year of service up to 20 years. If a teacher started at $28,000 and 4 years later had a salary of 37,000, what function wpuld describe the teacher's salary over time? S (n) is the teacher's salary ...

*September 10, 2016*

**Drivers Ed.**

Say your car gets 25 miles to the gallon. My destination is about 250 miles away. How many times will i have to fill my car up before I run out if gas?

*September 8, 2016*

**social studies**

OMG THE ANSWER IS C ! .. trust me

*September 7, 2016*

**math**

Mary has two tanks of fish. If she transfers 15 fish from the larger tank to the smaller tank then the number of fish in the smaller tank will be 5/7 of the number of fish in the large, tank. Given that there are 35 fish in the smaller tank originally, find the number of fish ...

*September 5, 2016*

**math**

As part of the 'Learning Journey' program, 73 pupils travelled on two buses, one air-conditioned and one non-air-conditioned, to the Singapore Discovery Centre. Three-fifths of the pupils on the air-conditioned has wee girls. There were 17 boys in the non-at, ...

*September 5, 2016*

**math**

The mathematics club in a school has 53 members. 5/7 of the girls members and 3/5 of the boys members are from lower secondary. The total number of lower secondary members is 35. How many members of the club are boys?

*September 5, 2016*

**Algebra 1**

A company that produces custom bike license plates spends $5525 per month in building overhead plus $2.50 per license plate. If the plates sell for $5.99, how many plates must the company sell each month before making a profit? Plz help. Thanks?

*September 1, 2016*

**Algebra 2**

A single card is chosen at random from a standard deck of 52 playing cards. What is the probability of choosing a card other than a queen or a king?

*August 28, 2016*

**check my work**

2.B 4.d

*August 19, 2016*

**check my work**

1. Which of the following events happened last? (1 point) the Stamp Act the Intolerable Acts the establishment of the first British colony in the New World the Writs of Assista 2. What is a legitimate government? (1 point) one in which government leaders obtain and keep power ...

*August 19, 2016*

**check my work**

thanks can you check another question anwser again

*August 19, 2016*

**check my work**

3. Which of the following is an advantage of a presidential government? (1 point) The president is elected independently of the legislature. The president is part of the legislative branch of government. A system of checks and balances increases legislative power. A system of ...

*August 19, 2016*

**algebra 2**

You toss a polybutadiene rubber ball 40 feet straight up from ground level. Each time it bounces, it rebounds 2/3 of the distance from which it fell. It continues bouncing indefinitely. How far does it travel before it comes to rest?

*August 12, 2016*

**Calculus 1**

Find the limit. lim x->0 (e^(6/x)+8x)^(x/2)

*August 10, 2016*

**physics**

. A ball is thrown so that it just clears a 10 feet fence 60 feet away. If it left the hand 5 feet above the ground and at an angle of 60° with the horizontal, what was the initial velocity of the ball?

*August 8, 2016*

**PreCalculus**

Farmer Jill needs a new pen for her pet billy goats. She would like the pen to be rectangular and have an area of 30 square feet. Unfortunately for Farmer Jill, as the sun rises, the billy goats have developed the habit of running full speed at the sun; knocking the East side ...

*August 1, 2016*

**CHECK MY ALGEBRA 2**

Would it be f(x) = (x-4) / (x-4)(x+2)???

*July 25, 2016*

**CHECK MY ALGEBRA 2**

Sorry I actually have one more question. After solving for your equation the vertical asymptote would actually be 2 and not -2?? So can you still help me create the correct equation

*July 25, 2016*

**CHECK MY ALGEBRA 2**

Ohhh I see thanks Scott!

*July 25, 2016*

**CHECK MY ALGEBRA 2**

Write an equation that would have a hole at x = 4 and a vertical asympote at x = -2. My answer was f(x)= (x-4)/(x+2) If it is not correct can someone please help me solve it and explain it to me? Thanks!

*July 25, 2016*

**Math**

Amy have 69 shells she put them into 8 groups how many shells are there? 8.625

*July 12, 2016*

**Math**

Chords line PQ and line RS of a circle meet at X inside the circle. If RS = 38, PX = 6, and QX = 12, then what is the smallest possible value of RX?

*June 14, 2016*

**Math**

In triangle ABC, AB = 10, AC = 8, and BC = 6. Let P be the point on the circumcircle of triangle ABC so that angle PCA = 45 degrees. Find CP.

*June 14, 2016*

**math**

A cone-shaped glass and a tin can are filled with water. The height of the cone is 12" (12 inches) and it has a radius of 1.5" (1½ inches). The can is 2 inches high and has a diameter of 4 inches. Which container holds more water? How much more water does the ...

*June 13, 2016*

**Math- Prob Stat**

The amount of time a student spends completing homework per week their senior year is normally distributed with a mean of 5 hours and a standard deviation of 1.4 A. Find the probability a randomly selected student spends less than 3 hours completing homework B. Find the ...

*June 1, 2016*

**Math help!**

5. Replace the ___ with <, >, or = to make a true statement. 7^4/7^2____ 49 < <--------------- > = none of the above multiply the following polynomials. 6. –2r(8r + 5) –16r^2 + 5 <-------------- –16r^2 + 10 –16r^2 – 10r –16r^2 &#...

*May 30, 2016*

**Math- Prob Stat**

The probability that a student in this school has a job is 65%. What is the probability that: A. You ask at least 8 people before you find someone with a job? B. You ask at most 4 people before you find someone with a job? C. Between 15 and 29 people in a group of 50 will have...

*May 29, 2016*

**Math- Prob Stat**

How do you determine if a raffle or casino game is fair?

*May 28, 2016*

**Math- Prob Stat**

In a Gallop Poll, 35% 18-23 year old's stated that they believe in ghosts. Find the probability that out of 16 students aged 18-23: A. Exactly 5 said they believed in ghosts. B. Exactly 5 said they do not believe in ghosts. C.Less than 11 said they do not believe in ghosts...

*May 25, 2016*

**Math**

Did you find this? I'm taking this test now and am so lost

*May 16, 2016*

**Chemistry**

Calculate the standard free-energy change for the following reaction at 25 °C. Standard reduction potentials can be found here. 2Au^3+(aq) + 3Cr(s) <-----> 2Au(s) + 3Cr^2-(aq)

*April 28, 2016*

**PreCal**

An airplane is traveling at 575 mph in the direction of S 83 degree W. The wind is blowing at N 35 degree W. What is the actual speed and direction of the plane?

*April 26, 2016*

**Life Orientation**

Identify three of human rights violations or discrimination and explain in an itroductory paragraph why you choose the specific human rights violations or discrimination

*April 22, 2016*

**Life orientation**

By not giving money to the police when u are given a fine..

*April 21, 2016*

**Pre-Calc**

A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 3 mi apart, to be ∠x = 35° and ∠y = 45°, as shown in the figure. (Round your answers to two decimal places.)

*April 21, 2016*

**life orientation**

Life orientation

*April 20, 2016*

**algebra**

A laptop computer is purchased for $5000 . Each year, its value is 70% of its value the year before. After how many years will the laptop computer be worth $300 or less

*April 16, 2016*