Sunday

February 26, 2017
Total # Posts: 4,186

**PHYSICS**

An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction and has a magnitude of 6.2 N ; a second force has a magnitude of 5.0 N and points in the negative y direction Find the magnitude of the third force ...

*February 25, 2017*

**math**

dev has 120 stickers.he is going to get some more stickers,n,from his friend.write an expression using n to show how many stickers dev will have. please could you do it quickly i have to give this in after the half term and the other question i did!!!

*February 17, 2017*

**math**

the difference between two whole numbers is 15.one of the numbers is 1.there are two possibilities for the second number. what are they?

*February 17, 2017*

**Math**

30^2 =900 square inches

*February 15, 2017*

**Math**

How do i figure out if Ross doubles the length of each side of the picture? What is the are of the new square picture?

*February 15, 2017*

**Math**

Is rhe answer 225

*February 15, 2017*

**Math **

Ross uses nylon string as a border around a square picture. The string is 60 inches long. What is the area of the picture in square inches? Show your work.

*February 15, 2017*

**Math! Please help!**

This is an inequality problem/question. I dont know if I'm right in solving this problem: 15 ?-k/4-9 (k/4 is a fraction) Please help! I got 5.25 ?k

*February 13, 2017*

**Geometry **

in two congruent triangles the ratio of lengths of two corresponding sides is 5:8. If the perimeter of the larger triangle is 10 ft less than twice the perimeter of the smaller triangle find the perimeter of each triangle

*February 12, 2017*

**Physics**

Hello, I have a question and I would like to know if anyone can help me. Well I was reading about the motion of an ideal "yo-yo" and I found that mechanical energy is conserved, but there´s something that I don´t understand and it´s about the work ...

*February 10, 2017*

**Physics**

A wrecking ball is swinging at just the right height so that the student can stand at the bottom of the trajectory (lowest point) and grab onto the ball to swing – something that is just way too tempting for this inquisitive student. In order to justify invading the ...

*February 9, 2017*

**Math **

The sides of the rectangle are in the ratio of 4:7. If its length is 31.5 in., find the width, the perimeter, and the area of this rectangle.

*February 7, 2017*

**Math**

Would you please help me?? Anyone??

*February 7, 2017*

**Math**

The result of reflecting across the line y = x and then rotating 330 degrees counterclockwise around the origin is an isometry T . Represent T by a 2 ? 2 matrix. There is more than one way to do it. Use the point (1, 1) to check your answer. I know how to make the matrices but...

*February 7, 2017*

**Chemistry**

How many grams of urea would have to be dissolved in 250 grams of water to give it a freezing point of -4.degrees celcius

*February 4, 2017*

**MATH**

Is 1/5 a Irrational number Rational neither

*February 2, 2017*

**Math **

A marathon runner runs 10 1/2 miles in 2 hours. What is her rate? Write an expression to represent the problem. Solve the problem:

*January 23, 2017*

**Math**

Thank u

*January 23, 2017*

**Math **

On a soccer team 40% of the goals are scored by the star player. If 70 goals are scored all season, how many are scored by the rest of the team?

*January 23, 2017*

**Math **

Elizabeth pumps 3 1/2 gallons of gas in 1/4 of a tank. How many gallons does a full tank hold? Write an expression to represent the problem. Solve the problem:

*January 23, 2017*

**math**

If the half life is 24360 years and after 1000 years I have 2.1 gm left, what was the initial qty. Doing it in a common sense way keeps giving me 51gm and that doesn't make sense. formula is y=ae -bt

*January 18, 2017*

**Math**

An oil spill spreads 25 square meters every 1/6 of an hour. How much area does the oil spill in two hours?

*January 17, 2017*

**Math**

Sway has 3 red roses in her bouquet for every 5 yellow roses. The bouquet has two dozen red and yellow roses. How many are yellow roses?

*January 17, 2017*

**Math**

Sorry it's 5 minutes

*January 11, 2017*

**Math**

The average 3rd grade student can read 60 words I 5 minutes. What is the average reading per rate? Write an expressionto represent the problem. Solve the problem

*January 11, 2017*

**Math**

Thank u Ms.Sue

*January 11, 2017*

**Math**

Rate= 5.25

*January 11, 2017*

**Math**

A Marathon runner runs 10 1/2 miles in 2 hrs. What is her rate? Write an expression to represent the problem. Solve the problem.

*January 11, 2017*

**grammar**

Which sentence correctly uses a nominative case pronoun? A. Have her and Julie been to the downtown mall recently. B. Don and them are wonderful friends. C. The campers and we gathered around the bonfire. D. The only ones who received ribbons were Paul and me.

*January 11, 2017*

**Math 1**

In a study of 500 men, diastolic blood pressure was found to be approximately normally distributed, with a mean of 82 millimeters (mm) of mercury and standard deviation of 10 millimeters. Use the 68-95-99.7% rule to determine what percentage of the test group had a diastolic ...

*December 15, 2016*

**Government**

How do political cleavages shape people's opinions?

*December 15, 2016*

**Trig Question**

Find solutions of the following equation which lie in the interval [0,2pi): 6cos(3theta)/(2)+3=0

*December 13, 2016*

**algebra**

simplify. 6/ ?3 + 2 A.4/?3 B.12-6?3 C.?3 - 2*** D.3 ***my answer

*December 12, 2016*

**Math**

Fill in the blanks. 56 ÷ 7 = ____ ones ÷ 7 = ____ ones = ____

*December 6, 2016*

**Math**

21?

*December 5, 2016*

**Math**

A phone company uses the equation y=0.15x+10 to find y, the monthly charges for a customer sending x text messages. How many text messages are sent if the monthly charge is $77.50?

*December 5, 2016*

**ACCOUNTING**

On April 1, 10,000 shares of $5 par common stock were issued at $22, and on April 7, 5,000 shares of $50 par preferred stock were issued at $104. On April 20, 5,000 shares of common stock were issued in exchange for land. The stock had a market value of $23 on that date. ...

*December 4, 2016*

**Statistics**

Thirty-three small communities in Connecticut (population near 10,000 each) gave an average of x = 138.5 reported cases of larceny per year. Assume that ? is known to be 42.9 cases per year. (a) Find a 90% confidence interval for the population mean annual number of reported ...

*December 3, 2016*

**linear modles (math)**

multiply 2.61*4.5 and round to the tenths. There are 10 tenths in a n inch I believe. Sorry if I didn't help.

*December 1, 2016*

**Is My Answer Correct Tutors?**

You deposit $9,000 in an account earning 5.5% interest compounded semiannually. How much will you have in the account after 10 years? (Note: Use n=12 for monthly compounding, n=4 for quarterly compounding, n=2 for semiannual compounding, and n=1 for annual compounding.) $15483...

*December 1, 2016*

**algebra 1**

Harold's car has a fuel tank with 12 gallons of fuel in it. The fuel efficiency of Harold's car is 25 miles per gallon. Write an equation to represent the amount of fuel remaining, f, in Harold's car after driving m miles.

*December 1, 2016*

**Math**

In a circus a tightrope is stretched from the top of a 10 ft. pole to the top of a 25 ft pole. The poles are 36 feet apart and vertical. How long is the tightrope? Show your work.

*November 30, 2016*

**Math**

F(x)= 3/2x +b In the function above, b is a constant. If f(6)=7, what is the value of f(-2) ?

*November 27, 2016*

**Math**

If (t/5)/(t-5)=10 what is the value of t ?

*November 27, 2016*

**PreCalc**

2x^3+x^2-8x+3>0

*November 26, 2016*

**Statistics**

Please help I don't know how to solve this problem : Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana. After examining accounting records for the past several years, he found that the store has been ...

*November 21, 2016*

**Statistics**

What is the average miles per gallon (mpg) for all new cars? Using Consumer Reports, a random sample of 35 new cars gave an average of 21.1 mpg. (a) Identify the variable. new cars total miles all cars miles per gallon (b) Is the variable quantitative or qualitative? ...

*November 20, 2016*

**Statistics**

Thank you so much, I appreciate it!

*November 17, 2016*

**Statistics**

Please help, I do not understand how to do this: Let x be a random variable that represents white blood cell count per cubic milliliter of whole blood. Assume that x has a distribution that is approximately normal, with mean ? = 7400 and estimated standard deviation ? = 2900. ...

*November 17, 2016*

**Statistics**

Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches and standard deviation 4 inches. (a) What is the probability that an 18-year-old man selected at random is between 65 and 67 inches tall? (Round your answer to four decimal ...

*November 17, 2016*

**Statistics**

In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal distribution to estimate the requested probabilities. Ocean fishing for billfish is very popular in the Cozumel region of Mexico. In the Cozumel region ...

*November 17, 2016*

**Maths**

I got 30% on a 10-problem test, 70% on a 20-problem test and 80% on a 30-problem test. If the three tests are combined in one 60-problem test what percentage is my overall score?

*November 17, 2016*

**Statistics**

Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 32 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of watch lifetimes is 7 ...

*November 16, 2016*

**Statistics**

find z such that 6.6% of the standard normal curve lies to the right of z. (Round your answer to two decimal places.)

*November 16, 2016*

**physics**

The figure shows an overhead view of a 3.00-kg plastic rod of length 1.20 m on a table. One end of the rod is attached to the table, and the rod is free to pivot about this point without friction. A disk of mass 37.0 g slides toward the opposite end of the rod with an initial ...

*November 16, 2016*

**Math**

Somebody help

*November 15, 2016*

**Math**

Anjalina earns 5% commission on all electronics she sells at electric world .on Monday she sold a television for $1130 and DVD that cost $325 .what was the total she earned in commission

*November 15, 2016*

**math**

Alice is working 2 jobs to save up money for a trip. She works at the ice cream shop for $9 an hour and babysitting for $12 an hour. She needs to earn at least $200 per week and can only work 20 hours per week. Write a system of inequalities to model the number of hours she ...

*November 15, 2016*

**physics**

A child is sitting on a stationary skateboard with a pile of rocks which she throws in one direction in order to make the skateboard travel in the opposite direction. If the rocks each have a mass of 0.95 kg and she can throw them with a speed of 19 m/s relative to the ground...

*November 13, 2016*

**chemistry limiting reagent**

thank you :)

*November 13, 2016*

**chemistry limiting reagent**

if i have a 1:1 mole ratio as with this reaction: NaOH + HCl --> NaCl + H20 and i use same volumes (50mL) and same Molaritys (1.00M) then there is no limiting reactant correct??

*November 13, 2016*

**Calculus**

I got the answer thanks anyways:)

*November 12, 2016*

**Calculus**

its f prime.

*November 12, 2016*

**Calculus**

Suppose that f(x+h)-f(x) =-4 h x^2 - 1 h x + 4 h^2 x + 3 h^2 -3 h^3. Find: f^1(x)

*November 12, 2016*

**Math**

Thank u Ms. Sue

*November 9, 2016*

**Math**

How do I write this as a equation? Two years if local internet cost $685, including the installation fee if $85. What is the monthly fee?

*November 9, 2016*

**math**

7. A certain strain of bacteria doubles every 6 minutes. Assuming that you start with only one bacterium, how many bacteria could be present at the end of 84 minutes (round answer to the nearest bacteria)?

*November 9, 2016*

**algebra connections**

8. The population of Grand City in 1990 was 5,250. Assume the population is increasing at 2.5% per year. What was the population in Grand City in 2010 (round answer to the nearest person)?

*November 9, 2016*

**algebra**

At the start of an experiment, there are 100 bacteria. If the bacteria follow an exponential growth pattern with a growth rate of 2%, what will be the population after 5 hours (round to the nearest bacteria)?

*November 9, 2016*

**Math**

Thank u Ms. Sue

*November 7, 2016*

**Math**

Three birds have a combined age if 76 years old. One bird is 10 years old. The second is twice as old as the third bird. How old are they?

*November 7, 2016*

**Math**

A right triangle hypotenuse has length of 5. If one keg has length of 2, what is the length of the other leg?

*November 7, 2016*

**math- Trigonometry**

Simran, thanks for asking for me

*November 5, 2016*

**math- Trigonometry**

Ok thank you. that makes more sense. I didn't understand the square root thing they did.

*November 5, 2016*

**Math**

Sandra has 16 red roses and 40 white roses. she wants to make arrangements of flowers with the same number of red roses and the same number of white roses in each arrangement. What is the greatest number of arrangements Sandra can make?

*November 3, 2016*

**Science Psysics**

A 6 kg black is placed at the very top of a ramp that is inclined at 31 degrees and the block is released to slide down the ramp. As the block slides friction exerts a constant resistive force of 17N directed back up the ramp What is the block's speed when it arrives at ...

*November 2, 2016*

**Math**

7/3 divided by 5/6

*November 2, 2016*

**Math**

The population of Greenville is approximately 75 times the population of Fairview. There are 3.75*10^5 people living in Greenville. Approximately how many people are living in Fair view?

*November 1, 2016*

**Geography**

Draw diagram to help find M angle ABD when M angle ABC equals 66 M angle ABD equals 5x + 3 and M angle DBC equals X plus 3

*October 31, 2016*

**physics**

a block B (m2 = 14 kg) is at rest on top of a table. Block B is connected to block A (m1 = 4.8 kg) and block C (m3 = 17 kg) by two strings that each pass over a frictionless pulley installed at the either end of the table. The horizontal surface of the table exerts a 32-N ...

*October 30, 2016*

**physics**

Children slide down a frictionless water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at point A and lands in the water at point B, a horizontal distance L = 2.46 m from the base of the slide, determine the height h of the water slide.

*October 28, 2016*

**Photography**

IS this statement true or false? 100 ISO for film = 800 ISO for digital. I'm not sure. I only learnt ISO for digital. I don't know how to check if they are both equal.

*October 28, 2016*

**Math**

Miguel has 325 baseball cards and 272 football cards. He said that he has 597 cards in all. Is his answer reasonable? Explain using estimation

*October 26, 2016*

**Math**

Natatile has 138 DVD's and 419 CD's. If yu were to estimate the sum of the DVD's and CD's, what sentence could you write? Then find your estimated sum.

*October 26, 2016*

**Math**

Find the unit rate: Jim roller skates 12 miles in 2 hours.

*October 26, 2016*

**Math**

Ethan's dog weighs 48 pounds. Noah's dog weighs 5/8 the weight of Ethan's dog. How much does Noah's dog weigh?

*October 25, 2016*

**Pre-Algebra**

"John puts $200 in his safe and starts saving $50 per month. Write a function rule for the amount of money he will have in his safe after x months. How much money will be in his safe after 12 months?" I got how much money will be in his safe after 12 months, but I ...

*October 25, 2016*

**Algebra**

Factorize 1: 8z^2+19z+15=0 2: 4x^2+16x-6=0

*October 23, 2016*

**Algebra**

Yes but how do I explain my answer?

*October 22, 2016*

**Algebra**

Mickey charges $15, $30, $45, and $60 for babysitting 1, 2, 3, and 4 hours, respectively. Is the relationship between the number of hours and the amount charged porportional? If so, find the unit rate. If not, explain

*October 22, 2016*

**Math**

108?

*October 18, 2016*

**Math**

A team plays 120 matches each year. In it's first year, the team won 45% of it's matches. The next year the team won 55% of it's matches. How many more games did the team win in the 2nd year than in the first year?

*October 18, 2016*

**physics**

A rotating wheel requires 7.00 s to rotate 28.0 revolutions. Its angular velocity at the end of the 7.00-s interval is 97.0 rad/s. What is the constant angular acceleration (in rad/s) of the wheel? rad/s2

*October 17, 2016*

**Maths**

Amy walks 9km in 1.5hours.what is her speed?

*October 13, 2016*

**Math**

Kendrey had 1 1/3 bags of popcorn. About how much more does she need to have about 4 bags of popcorn? 3 Give two di erent possible answers.

*October 10, 2016*

**Literature review**

I need directions/steps on how to start writing this paper. This is the rubric I need to follow in order to complete this paper: Literature review: On subsidized hosing, public housing. Define section 8 housing, section 202 housing, section 811 housing. Your focus: Should ...

*October 7, 2016*

**Expected Value extended warranty**

A company estimates that 0.2% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $450. If they offer a 2 year extended warranty for $55, what is the company's expected value of each warranty sold?

*October 6, 2016*

**Math**

There is an 8 foot long ramp. If the platform holding up the end of the ramp is 1 foot high, how do you calculate the distance from the base of the platform to the end of the ramp? Is there an equation I'm missing here or something?

*October 5, 2016*

**Math**

Thanks yall

*October 4, 2016*

**Math**

Distributive property: 8(-x -6)

*October 4, 2016*