Friday

October 21, 2016
Total # Posts: 2,329

**Calculus**

differentiate the given function, simplify your answer by leaving no negative or rational exponents. final answer should be in factored form where possible. y=(x^2 +2x)^3(x+2)

*October 20, 2016*

**Calculus**

A nut store sells 200 bags of almonds per month at a price of $5 per bag. For every $0.20 decrease in the price, the store sells five more bags per month. Determine the marginal revenue when 120 bags are sold.

*October 20, 2016*

**Calculus**

A nut store sells 200 bags of almonds per month at a price of $5 per bag. For every $0.20 decrease in the price, the store sells five more bags per month. Determine the marginal revenue when 120 bags are sold.

*October 19, 2016*

**Calculus**

The demand function for a bottle of hand lotion is p(x)=0.78+0.0003x, where x is the number of bottles sold and p is the price, in dollars. The cost function is c(x)=480-0.32x+0.0005x^2. Find the marginal profit when 700 bottles of hand lotion are sold.

*October 19, 2016*

**Calculus**

is that 1/9 or 1/3

*October 19, 2016*

**Calculus**

Determine the coordinates of the point on the graph of f(x)=3x^2-7x+4 where the tangent line is parallel to the line 5x+y=3

*October 19, 2016*

**Calculus**

find the point, (c,f(c)), on f(x)=x^2 in the interval 0≤X≤4, such that f'(c) equals the average rate of change over that interval.

*October 19, 2016*

**Calculus**

Determine the equation of the tangent to f(x)= (1/x)+x at the point (1,2)

*October 19, 2016*

**Organic Chemistry**

Butanamide (Amide) vs Aminobutane (Amine) Which compound do you think has the higher melting point? Explain your reasoning.

*October 17, 2016*

**Science**

Show how vertical multiplication can be used to do a charge balance if Zn2+ combines with Cl-

*October 15, 2016*

**Calculus**

Lim (√(3-x) - √(3+x)) /x x->0

*October 15, 2016*

**Calculus**

Lim √(3-x) - √(3+x) x->0 x

*October 15, 2016*

**calculus**

ok got it thanks

*October 15, 2016*

**calculus**

thats 0.2m/s right?

*October 15, 2016*

**calculus**

(Compute all instantaneous rate of change using the limit of the difference quotient) 2) A football's path is represented by the function h(t)=-4.9t^2 +10t+2, where h is its height, in meters, after t seconds. Find the rate of change of the football's height at 1s.

*October 15, 2016*

**Calculus**

thanks thats a better way to write it

*October 15, 2016*

**Calculus**

Determine the average rate of change of f(x)=1/(x^2 -x) over the interval 2 is less then or equal to x and 3 is greater or equal to x.

*October 15, 2016*

**Physics**

An antique cabinet is in the cab of a pickup truck traveling 20.1 m/s and has a coefficient of static friction of 0.250 between the antique and the cab. In the event of a sudden stop, what is the shortest distance the pickup truck can stop without having the cabinet move ...

*October 13, 2016*

**physics**

a child saw a skunk in a hole of a tree, standing 2.5m away. the child attempted to throw a pebble into the hole but missed with a speed of 11m/s. Angle of elevation is 75 degree, what was the Vfy of the pebble.

*October 10, 2016*

**daymon**

a child saw a skunk in a hole of a tree, standing 2.5m away. the child attempted to throw a pebble into the hole but missed with a speed of 11m/s. Angle of elevation is 75 degree, what was the Vfy of the pebble.

*October 10, 2016*

**Science**

Thank you Ms. Sue

*October 10, 2016*

**Science**

Where can I look and/or what website can I look at for the different components of the scientific method process? Please help

*October 10, 2016*

**PHYSICS**

a 75kg parent and a 22kg child meet at the center of an ice rink. they place their hands together and push hard enough to slide apart. a. is the force experienced by the child more than, less than, or the same force experienced by the parent? I said they experience the same ...

*October 10, 2016*

**Physics**

A spring with a spring constant of 22.0 N/cm has a block attached to one end and the other end is fixed. How much work does the spring do on the block if the spring is stretched from relaxed length by 6.8 mm as the block is moved? How much additional work is done by the spring...

*October 9, 2016*

**Science**

D=M/V

*October 9, 2016*

**Math**

What prime number am I? I have 3 prime factors Each prime factor is a different number I am a multiple of 10 I am less than 50

*October 5, 2016*

**Math**

Yes I know the total is 7 because 3 plus 4=7 but they are only asking the multiple choice answers

*October 4, 2016*

**Math**

So then would the answer be C?

*October 4, 2016*

**Math**

Pardon me. I believe I got the wrong answer I believe the answer would be C because they say in the word problem the ratio of blue paint to yellow paint. Can you please check my answer.

*October 4, 2016*

**Math**

To make green paint, Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What the does the ratio 3:4 mean? a. 4 parts yellow for every 3 parts blue b. 4 parts blue for every 3 ...

*October 4, 2016*

**Math**

So basically I would have to find out what the common facto of 36 and 24 first and then what would I do next?

*October 4, 2016*

**Math**

Robin and Emily are selling boxes of candy bars. Robin sells 36 boxes of candy and Emily sells 24 boxes of candy. Which expression, using the form a(b+c), represents the amount they sold altogether? a. 2(12+24) b. 4(9+6) c. 24(6 + 36) d. 12 (3+2) Can you explain to me if I add...

*October 4, 2016*

**Math**

Ty Ms. Sue

*October 4, 2016*

**Math**

I think I just solved it. I just watched a video on how to do division equations so it would be using inverse multiplication. x/42=21 x/42x42=21x42 x times 1=882 x=882 To check 882/42=21 21/21=1 Do I have the proper understanding of this somewhat. Let me ask you one thing ...

*October 4, 2016*

**Math**

Ms. Jones wrote the equation below on the board. x divided by 42=21 If the equation Ms. Jones wrote is true which of the following equations must be true? Answers: a. x=21 divided by 42 b. x=21 x 42 c. x=42 divided by 21 d. x=21 plus 42 I am not sure where to begin on this at ...

*October 4, 2016*

**Math**

Robin and Emily are selling boxes of candy bars. Robin sells 36 boxes of candy and Emily sells 24 boxes of candy. Which expression, using the form a(b+c), represents the amount they sold together a. 2(12+24) b. 4(9+6) c. 24 (6 + 36) d. 12 (3 + 2) My answer is B 9+6=15x4=60 60 ...

*October 4, 2016*

**Math**

Thank you checking on this.

*October 4, 2016*

**Math**

If it costs $75 to buy 3 video games, how much money will Jordan need if he wants to buy 12 video games? $75.00/3 video games=$25.00 for 1 video game $25.00 x 12 video games=$300.00 for 12 video games Can you please double check my answer to see if I got it correct. Thank you

*October 4, 2016*

**Math**

Mrs. Hanson's class of 22 students shares 132 colored pencils Which statement is true? a. For each student there are 7 colored pencils. b. For each student there are 6 colored pencils c. For every 7 students, there is 1 colored pencils d. For every 6 students, there is 1 ...

*October 4, 2016*

**Math**

Shelby drove to her aunt's house, which is 360 miles away. If it took her 5 hours and she drove at a constant rate, what was Shelby's average speed? My answer which I figured out in two different ways: 360 miles/5 hours=72 mph 360 miles/5 hours=x/1 hour=72 mph Can you ...

*October 4, 2016*

**Math**

I think I understand now. I would do 3.5 gal x 16 cups/1 gallon=56.0 cups I could also add 16 cups + 16 cups+16 cups=48 cups+8 cups (8 would be half of 16)=56.0 cups Thank you Ms. Sue for your help.

*October 3, 2016*

**Math**

Rita needs to measure out 3.5 gallons of vinegar for a science experiment However, her only measuring tool is a measuring cup that holds 1 cup. How many cups of vinegar does she need? I am confused on this can you please help me?

*October 3, 2016*

**chem**

Calculate the number of grams of Fe formed when 0.350 kg of Fe2O3 reacts. m = g

*September 28, 2016*

**Math**

Thank you Ms. Sue or checking on this.

*September 28, 2016*

**Math**

Molly has 15 marbles in a jar. What is the ratio of black to white marbles? There are 8 black marbles and 7 white marbles. A. 7:8 B. 7:15 C. 8:7 D. 8:15 My answer would be C Can you please double check my answer and tell me if I am right or wrong.

*September 28, 2016*

**Math**

So then the answer would be D

*September 28, 2016*

**Math**

Which table correctly fills in the ratio table below? Boys 3 6 ___ 21 Girls 2 4 6 ____ A. Boys 3 6 9 21 Girls 2 4 6 20 B. Boys 3 6 9 21 Girls 2 4 6 8 C. Boys 3 6 13 21 Girls 2 4 6 8 D. Boys 3 6 9 21 Girls 2 4 6 14 I believe the answer is B Could you please tell me if I am ...

*September 28, 2016*

**Math**

Jason watched a caterpillar move 10 feet in 2 minutes. Jason says the caterpillars unit rate is 0.2 feet per minute. Is Jason correct? Explain. I believe that Jason is correct because: If you have 2 minutes/10 feet=x/1 10/10=1 2/10=0.2 If you have 10 feet/2 minutes 2/2=1 10/2=...

*September 28, 2016*

**Math**

Marta, Loribeth, and Ira all have bicycles. The table shows the number of miles of each rider's last bike ride, as well as the time it took to complete the ride. Marta: Distance of Last Ride (in miles) 8 Time Spent on Last Bike Ride (in minutes) 80 Loribeth: Distance of ...

*September 27, 2016*

**Math**

Kim was walking down a rocky path. For 4 minutes, the elevation dropped steadily. Altogether it dropped 8 feet. What was the change in elevation per minute for the 4 minute?

*September 26, 2016*

**Algebra**

A number n is less than 6 units from 0. write inequality and solve it.

*September 22, 2016*

**PHYSICS**

does an object speed up or slow down when: 1. its velocity is positive (right) and its acceleration is positive (right)? I said it speeds up 2. its velocity is positive (right) and its acceleration is negative (left)? I said it slows down 3. its velocity is negative (left) and...

*September 22, 2016*

**MATHEMATICS**

if 1g of a drug whose half-life is 9 hours is administered intravenously, how much of the drug is left after 3 hours? after 5 hours? after 10 hours?

*September 21, 2016*

**MATH**

a drug has a half life of 5 hours. write the exponential function that gives the concentration of the drug over time assuming an initial concentration of 2 mg/ml

*September 21, 2016*

**PHYSICS**

looking over the edge of a cliff, you become curious as to how high up you are. you take a rock and drop it over the edge and count. The rock strikes the ground in between 3 and 4 of your count. so let's estimate that it took 3.5s for it to hit the ground. using the bottom...

*September 21, 2016*

**physics**

A car is driving in the negative X direction at a steady speed of 15 m/s. if it starts at a position of 30m: What is its displacement in the first second? My answer was 15m and used Xf-Xo (final-initial) to find the displacement What is his displacement in the first two ...

*September 21, 2016*

**Math please help**

How would in know what to mutiply by for the second table?

*September 19, 2016*

**Math please help**

How did you find out to multiply the numbers by 3?

*September 19, 2016*

**Math please help**

Celeste is making fruit baskets for her service club to take to a local hospital. The directions say to fill the boxes using 5 apples for every 6 oranges. Celeste is filling her baskets with 2 apples for every 3 oranges. Complete the tables to find equivalent fractions Apples ...

*September 19, 2016*

**physics**

In Mud buggy driving, people attempt to drive an off-road vehicle over a deep mud puddle. If the buggy stops before the end , it sinks into the mud and needs to be pulled out with a tow truck. A racer is driving his mud buggy in a straight line. when he hits the edge of the ...

*September 18, 2016*

**physics**

In Mud buggy driving, people attempt to drive an off-road vehicle over a deep mud puddle. If the buggy stops before the end , it sinks into the mud and needs to be pulled out with a tow truck. A racer is driving his mud buggy in a straight line. when he hits the edge of the ...

*September 18, 2016*

**Math**

Mrs. Jacobson wants to order toy instruments to give as prizes to her music students. The table shows the prices for various order sizes. Whistles 25 items=$21.25 50 items=$36.00 80 items=$60.00 Kazoos 25 items=$10.0 50 items=$18.50 80 items=$27.20 a. What is the difference ...

*September 15, 2016*

**Math**

Tomas makes balloon structures at a circus. In 180 minutes, he uses 252 balloons to make 36 identical balloon structures. a. How many minutes does it take to make one balloon sculpture? How many balloons are used in 1 sculpture. b. What is Tomas's unit rate for balloons ...

*September 15, 2016*

**Math**

I think my final answer would be A

*September 14, 2016*

**Math**

Parkview Middle School has 3 boys to every 4 girls. Cypress Elementary School has 3 boys to every 7 total students. Both schools have 567 students. Which of the following statements is true. a. Parkview has more boys than Cypress. b. Cypress and Parkview have the same amount ...

*September 14, 2016*

**Math**

Thank you so much. You are so smart and I appreciate your patience with me.

*September 14, 2016*

**Math**

I tried the problem in different ways and I also got 1/8 so now I know that I was on the right track a little bit. So then the answer would be: The ratio of zebras to total animals is 1 zebra to every 8 animals-Would this be a correct interpretation?

*September 14, 2016*

**Math**

Can you explain this to me a little bit as to why you are saying 1/8?

*September 14, 2016*

**Math**

The local zoo has 3 lions, 4 elephants, 2 giraffes, 5 monkeys, and 2 zebras. What is the ratio of zebras to total animals? My Answer: I already know this 3x:4x:2x:5x:2x=16x So 16 total animals 16x=2 x=8 So then the ratio of zebras to the total number of animals is 8 Can you ...

*September 14, 2016*

**Math**

So that is how I would interpret this then. This is my first year learning about ratios and it is kind of confusing. Thank you for your help

*September 14, 2016*

**Math**

To make green paint,Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What does this ratio mean? My Answer: It means comparing part to part (comparing how much blue paint ...

*September 14, 2016*

**Math**

Let me ask you this. You said to repeat the same steps for Ren so I understand when you put 10:8:20 then I understand that you reduced 10:8:20=5:4:10 So would it be 5x:4x:10x= 19x=40 x=2.10

*September 14, 2016*

**Math**

When I tried to answer this I got the following: Sinea=$3.33 was spent on souvenirs Ren=$2.50 was spent on souvenirs I do not know if I got the correct answers and am unsure how to explain why one person paid more money than the other.

*September 14, 2016*

**Math**

It was as follows: Sinea=Snacks $5.00; Games $8.00; Souvenirs $12.00 Ren=Snacks $10.00; Games $8.00; and Souvenirs $20.0

*September 14, 2016*

**Math**

Suppose Sinea and Ren each spend $40.00 on snacks, and each person spends money using the same ratios as on their last trip. Who spends more on souvenirs? Explain. Please help me with this.

*September 14, 2016*

**Math**

Or Ren would spend $39.00 on souvenirs?

*September 14, 2016*

**Math**

Actually I arrived at an answer for part a of $1.50

*September 14, 2016*

**Math**

No it would be $2.50 because I just figured out how to get to that answer but part a is still confusing a bit to me.

*September 14, 2016*

**Math**

For part b wouldn't the answer be just $2.00?

*September 14, 2016*

**Math**

Well if I do 12/8x26/1=312/8=39 How can that be correct?

*September 14, 2016*

**Math**

I understand how you put it in a different perspective 12/8 so if he spends 26 on games she must spend 12/8 x 26 would you put 26 as the numerator or denominator?

*September 14, 2016*

**Math**

I am actually changing my answer to part a. to $13.00 but I am still confused on part a and b

*September 14, 2016*

**Math**

Would the answer for part a. be $6.00

*September 14, 2016*

**Math**

Sinea and Ren are going to the carnival next week. The table shows the amount that each person spent on snacks, games and souvenirs the last time they went to the carnival. Sinea= Snacks $5.00; Games $8.00; Souvenirs $12.00 Ren=Snacks 10; Games $8.00; Souvenirs; $20.00 a. ...

*September 14, 2016*

**Math**

Mike I am sorry I typed it in the wrong way and posted my new answer. Can you take a look at it please?

*September 14, 2016*

**Math**

Would it be 2/16=1/8 so total number of zebras 1 to 8 animals total?

*September 14, 2016*

**Math**

I am sorry I typed it wrong. It says what is the ratio of zebras to total animals?

*September 14, 2016*

**Math**

The local zoo has 3 lions, 4 elephants, 2 giraffes, 5 monkeys, and 2 zebras. What is the ratios of zebras total animals. Answer: I counted the total number of animals which is 16 so I got 2 zebras to 16 animals or 2:16 or 2/16 Do I need to do anything else in this problem? ...

*September 14, 2016*

**Math**

To make green paint, Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What does the ratio 3:4 mean? Answer: It means comparing part to part. (Comparing how much blue paint ...

*September 13, 2016*

**Math**

The ratio of North American butterflies to South American butterflies at a butterfly park is 5:3. The ratio of South American butterflies to European butterflies is 3:2. There are 30 North American butterflies at the butterfly park. a. How many South American butterflies are ...

*September 13, 2016*

**Math**

George has a goal of walking 9/2 kilometers today. Each time he walks to school and back, he walks a total of 1/2 kilometers. What is the meaning of 9/2 divided by 1/2? a. The speed in kilometers per hour that George needs to walk in order to reach his goal. b. The fraction of...

*September 11, 2016*

**Math**

6 So you would do 3x2=6 Then 30/6=5

*September 11, 2016*

**Math**

Jack has baseball practice every third and swimming practice every second day. During a month that has 30 days how many days will jack have both practices. I am a little stuck on this one. Can you point me in the right direction?

*September 11, 2016*

**Math**

ty Ms. Sue:)

*September 11, 2016*

**Math**

I figured out what I did wrong. In multiplication you don't find the common denominator but in addition and subtraction you do. That is what I did wrong.

*September 11, 2016*

**Math**

In one school, 5/6 of the sixth graders take a foreign language. Of these students 2/5 take French. What fraction of the sixth graders take French. Answer: 5/6 x 2/5=25/30 + 12/30=37/30=1 7/30 Can you please double check my answer to see if I got it right.

*September 11, 2016*

**Science**

Wow! Thank you so very much for your help. Now I know that I was definitely on the right track with this and got my answers right. I appreciate all of your help. I found out that hypothesis is basically a prediction. How long have you been doing Science?

*September 10, 2016*

**Science**

The Strange Case of Beriberi In 1887 a strange nerve disease attacked the people in the Dutch East Indies. The disease was beriberi. Symptoms of the disease included weakness and loss of appetite, victims often died of heart failure. Scientists thought the disease might be ...

*September 10, 2016*

**Math**

When I have 0.024 I moved the decimal over to the right 3 times which really makes it into 24 In 168.72 would I also move the decimal over 3 times?

*September 10, 2016*

**Math**

Question: 168.72/0.024=7.03 When I do this calculation on paper the above answer is what I get but when I do this calculation on a calculator I get 7,030.00 what I am doing wrong?

*September 10, 2016*