# Posts by BOBBY

Total # Posts: 732

**@AllCheaters**

ok

**Physics**

hahhahhahahhah

**Algebra Word Problem**

During summer vacation, c children went to different destinations with their parents. 36% of the children went to Europe and 24 children to Asia. The rest of the children went to South America. How many children went to South America?

**social studies**

yea

**math**

2cos(1/2x)-cos(1/2x)=0 , where 0<x<2pi determine the complete solution for the equation

**Precalculus**

The answer isn't 6 @Steve...

**Precalculus**

What is the smallest positive integer $n$ such that all the roots of $z^4 - z^2 + 1 = 0$ are $n^{\text{th}}$ roots of unity?

**Algebra word problem**

It takes john 12 hours to plow a field. After he had been working for 3 hours, his brother Mike came to help. Together they finished the job in 5 hours. How long would it take mike to plow the field working alone? How would I set this problem up in fraction form? And would I ...

**precalculus, complex numbers**

Let $\omega$ be a complex number such that $\omega^7 = 1$ and $\omega \neq 1$. Let $\alpha = \omega + \omega^2 + \omega^4$ and $\beta = \omega^3 + \omega^5 + \omega^6$. Then $\alpha$ and $\beta$ are roots of the quadratic \[x^2 + px + q = 0\] for some integers $p$ and $q$. ...

**Math**

A. Can't graph for you, sorry! B. The function is linear, as for every equal change in x, there is a set change in y. C. x increases by 1 every time y increases by 2. (y=2x-1) D. Plug into equation y=2x-1, so we get 20-1=19

**precalculus**

Let $R$ be the set of primitive $42^{\text{nd}}$ roots of unity, and let $S$ be the set of primitive $70^{\text{th}}$ roots of unity. How many elements do $R$ and $S$ have in common?

**Math**

How many three-digit counting numbers are exactly divisible by 6 but not also exactly divisible by 9?

**English**

Why is it difficult? I have never thought about it. Try to say it not in a quick way. Separate the words - hope and full and that is all

**english**

Yes, I also think that variant B is the most general and it must be correct. And by the way, if you need to develop this sentence and write a whole paragraph, you may go to the service I like personally. It is Prime Writing service

**Math**

A pencil costs $3.50 and a pen costs $6.70. Jessica bought m pens. She also bought 4 fewer pencils than pens. Write an algebraic expression for the total amount she spent. The answer supposed to be 6.70m + 3.5 (m-4). I got confused of what to do

**algebra 1**

x = -3 ,-2 ,-1,1,2,3 y= ?

**algebra 1**

write and graph the inverse variation when y=3 and x=2 find k = write the inverse variation fill in the table of values and graph x = -3 ,-2 ,-1,1,2,3 y= ?

**algebra 1**

write and graph the inverse variation when y=3 and x=2 find k = write the inverse variation fill in the table of values and graph x = -3 ,-2 ,-1,1,2,3 y= ?

**Math**

f(x+h)?f(x)=4hx?1h+5h^2. Find f?(x).

**trig**

Thanks....got it

**trig**

Brian is riding a Ferris wheel. The wheel has a radius of 25 feet, and at his lowest point, Brian is 8 feet off the ground. Brian times how long it takes to travel from the lowest point to the highest point and finds that it takes 8 seconds. Write a sinusoidal equation to ...

**Math**

A rectangular football field, including both end zones, is 120 yards long. The field has an area of 57,600 ft.². What is the width of the field in feet.

**math**

Every night when Isabella came home from work she put any change she had in her pockets into a jar. One day she wanted to know how much change she had in her jar. She noticed that she had two more nickels than twice the number of dimes, and eight fewer quarters than twice the ...

**Math**

Help me find p please. (X-3.15)^2=4p(y-219.7981936) Thanks!!!

**Math**

thanks Jamez

**Math**

Michael saves $423 dollars a month for college. About how much will he have saved after 4 years?

**Physics**

Thank you so much for the help!! Just to double check my math is correct, did you get about 2J as your answer? 2.45 to be exact

**Physics**

A mass m = 1 kg initially at rest at height h = 2m slides to the bottom of a 45 ramp. there is no friction between the mass and the ramp. At the bottom of the ramp the speed of the mass is 4 m/s. How much heat was generated by the friction as the mass slides down the ramp? Any...

**Physics**

A motor lifts an elevator of mass m at constant speed. The power output of the motor is P and there are no frictional losses so that all the power output from the motor goes into lifting the elevator mass. What is the correct expression for the time required for the motor to ...

**Physics**

Searches related to a motor lifts an elevator of mass m at constant speed. The power output of the motor is P and there are no frictional losses so that all the power output from the motor goes into lifting the elevator mass. What is the correct expression for the time ...

**ALGEBRA 2**

Let's take this step by step. 1. We can let x = number of apple pies you would make and y= the number of apple cobblers you make. 2. We can make an inequality showing the constraint of apples we need. So: 4x+2y<=16. Done! 3. Next ingredient we would use is flour, so let...

**Math**

1 to see this. You should get a pivot in each column. 1 (c) No, they do not form a basis because they do not span P3. (You would need 4 vectors to span P3.) 3. Let M2×2 be the vector space of 2×2 matrices with the usual ...

**Physics**

When boiling water, a hot plate takes an average of 9 minutes and 47 seconds to boil 100 milliliters of water. Assume the temperature in the lab is 75 degrees Fahrenheit. The hot plate is rated to provide 195 watts. How efficient is the hot plate? Thanks.

**Math**

Based on how you phrased the question, 20 percent would be the answer

**Math**

9/45 * 100% = ?

**Biology**

Hi all, Need help with this: What is the difference that you see on a EKG when you have non-transmural MI vs. transmural MI? a) In transmural MI the Q wave is amplified, and the R wave is depleted making the QRS complex look inverted b) In non-transmural, the T wave is absent ...

**Math**

The cost for 3 dinners plus a 15% tip is $27.60. Write an equation representing the situation if p is the price of the dinner in dollars. You may asssume there is no tax.

**math**

AB = 3x + 9, BC = 4x - 7, AC = 37. What do x and AB equal?

**PE**

True C C

**Physics**

idk sorry fam

**Physics**

A ball is thrown horizontally from the building roof at a speed of 20 m/s. Takes ball 4 seconds to reach the ground. How tall is building? What is the ball’s speed and direction as it contacts the ground? How far from the base of the building does the ball land? Use ...

**Math**

In the NFL, a division consists of 4 teams, each of which plays each other team twice. Assume that in any game, either team is equally likely to win (and there are no ties). What is the probability that, at the end of the season, the division has neither a perfect team with 6 ...

**math**

10 years ago raj deposited $5000 into an investment account with intrest compound quarterly. for the first 5 years the intrest rate was 6% and for the next 5 years the interest rate changed to 4.5% how much money is in the account now

**Chemistry**

A buffer was prepared by mixing 0.1 M ch3cooh with 0.1M ch3cooNa in the ratio 8:2. Calculate ph after the addition of 2mL of 0.1 M HCl? When you do the 8:2 ratio and add 2 mL of 0.1 M HCl, the buffer is gone and you are left with 1*10^-3 moles of ch3cooh. How would you ...

**Chemistry**

The acetate buffer were prepared by mixing 0.1 M ch3cooh with 0.1M ch3cooNa in the ratio 8:2 and 2:8. Calculate the resulting ph after the addition of 2mL of 0.1 M HCl to 10 ml of buffer 8:2 and 4ml of 0.1 M NaOH to 10 ml of buffer 8:2.

**Geometry**

maria is building a carrying case for a musical instrument. The case will have the shape of a triangular prism. She wants to know how much material will be needed to build it. The case will have the dimensions given in the diagram. What is the surface area of the case in ...

**Math**

19 students share 6 pizzas each need equal portions how much will each one have? I divided 6 pizzas into 8 pieces which gave me 48 pieces so 6/8 of a pizza

**Maths**

Tom reads that each seedling he is planting needs an area of 150 square centimetres of garden. Tom has 80 seedlings to plant. What is the total area of garden the seedlings will need? Give the area in A: Square Centimetres or B: Square Metres

**math**

Write4.1x10 to the 5th power in standard form

**Math**

What is the range between 58 degrees and -88 degrees

**Physics**

An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.

**Physics**

A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)

**Physics**

A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)

**Physics**

An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.

**Dynamics**

A 45ft long conveyor is used to move boxes up to a second level. The belt speed is 150ft/min and the conveyor is inclined at 15 degrees. Boxes are dropped vertically onto the conveyor and have no horizontal speed. The static and dynamic coefficient of friction between the belt...

**math**

The race was around a circular track for twenty-two laps.Calculate the number of radians a racer would travel from start to finish

**English**

What roles are played by the female characters you encountered in this unit? Describe some of these female characters, their traits, and the roles they played within the selections you read, especially considering that all of those selections had male characters as protagonists.

**Chemistry**

A 70.0 mL solution of 0.171 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.171 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. a) Calculate the pH at the first ...

**Chemistry**

What volume (in milliliters) of 0.100 M NaOH should be added to a 0.120 L solution of 0.024 M glycine hydrochloride (pKa1 = 2.350, pKa2 = 9.778) to adjust the pH to 2.95? I don't know how to do this problem! Steps with answers please!! HELP!!

**physics**

Mayan kings and many school sports teams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height of 12.2 ft when leaving the ground at an angle of 44.2°. With what speed, in SI units, does it leave the ground ...

**Algebra 2**

A right triangle has a 45 degree angle. The hypotenuse is x and the leg is 8. Find the value of x.

**math**

The length of a rectangle is 8 less than twice the length. If the perimeter of the rectangle is 194 inches, find the dimensions of the rectangle.

**Language Arts**

Great! Thanks, Ms. Sue! I appreciate it.

**Language Arts**

Could it be C?

**Language Arts**

Simile has "like" in it. So, A?

**Language Arts**

I don't know if it is A or B for the first one... But, for some reason, I'm looking in at B.

**Language Arts**

Or, could it be A on the first one?

**Language Arts**

Which of the following answer choices contains a METAPHOR? a. His skin was sandpaper. b. The sun sparkled like a diamond. * c. Sh wanted to be like the birds and fly away. d. They felt free when they ran through the doors. What is a key characteristic of a refrain in poetry? a...

**Algebra**

Tell whether the lines for each pair of equations are parallel perpendicular or neither. Y= -2x + 4 -5+10y=5 I think perpendicular Next question is same kind- Y=-1/4x+10 -2x+8y=6 I think it's neither

**Algebra**

Match the equation with its graph -2/3 x - 1/4y = 1/3

**Physics**

A light ray in water is directed at the water surface at an angle of incidence at 40 degrees. Calculate the angle of refraction of the light ray at this surface.

**Algebra**

Flying against the wind, an airplane travels 28 km in 5 hours. Traveling with the win, the same plane travels 3760km in 4 hours. What is the rate of the plane and still air and what is the rate of the wind?

**MATH**

6 is one of the common multiples

**Logarithms**

Solve the following equations for x and check the solution using log. 2^6x-1 = 28 The answer is log56/6log2. Explain each step.

**algebra**

thank you you helped allot

**algebra**

thank you

**aarays and expanded algorithm**

How to get the answer to this problem 37 ×45

**Lititure**

How do u write a melcon and rikki-tikki-tavi as a bully

**chemistry**

49.5(0.506-x)(0.253-x)=4x^2 How to make it in quadratic equation Please help with step by step. thank u so much

**find the area of the rectangle**

84cm And 19cm?

**Writing**

I want to tell you that you should definitely check the link sent at the previous answer. That helped me too. Also what helped me a lot is an online writing service as Marvelous essay service. You may check it too

**science**

Do I need the comma after "months" here? Over the past 6 months, OvaScience has been continuously hammered down by short sellers.

**chemistry**

3A+2B+2C > 4D+2E 1) what is the rate of this reaction in terms of change of concentration of reactant B? - is it '1/2' ? 2) what is the rate of this reaction in terms of change of concentration of product D? please help

**maths**

What is the sum of 4x dollars and 4x cents. Express your answer in cents .

**geomery**

Triangle ABC, inscribed in a circle, has AB = 15 and BC = 25. A tangent to the circle is drawn at B, and a line through A parallel to this tangent intersects line BC at D. Find DC.

**math**

why is the answer to this problem? 5/3 -5/6

**Anatomy & Physiology**

A person is complaining of muscle weakness, numbness, paralysis and pain. Which disorder of the nervous systemis this person most likely experiencing?

**Chemistry**

I have no idea

**chemistry**

Water has a density of 0.997 g/mL at room temperature (25 C). If you have exactly 500 mL of water, what is its mass in kg?

**chemistry**

Bromine is a red liquid at 25°C. Its density is 3.12 g/mL. What is the volume of 28.1 g of liquid bromine?

**Math**

I need to find what the total commission of 14% on a $3000 sale. Can u please show in detail how to solve this. Please and thank u. :)

**math**

oh I am amy's brother ms. sue

**math**

420? ms. sue?

**math**

The Sugar Sweet Company will choose from two companies to transport its sugar to market. The first company charges $ 4696 to rent trucks plus an additional fee of $ 225.50 for each ton of sugar. The second company charges $ 5500 to rent trucks plus an additional fee of $ 175....

**Physical Science**

The answer is FIGURE IT OUT YOURSELF!

**History**

THANKS!!!

**Maths**

Check my answer please? Not sure if I did this right. Let y = f(x) be a cubic polynomial with leading coefficient a = 2 and f(-2) = f(1) = f(2) = 0. find the factored form of f. I got: f(x) = 2(x + 2)(x - 1)(x - 2)

**statistics**

the standard score for hours spent online at home for Minnesotans was 2.84. The mean equals 8.9 hours. Approximately how many hours do Minnesotan adults spend online at home.

**algebra**

michael purchased a certain number of shares of one stock for a total of $1400. The second stock was selling for 6$ less per share. Michael could have brought 3 more shares of the second stock for the same amount of money. How many shares of the first stick did michael ...

**Algebra**

The ratio of the corresponding side lengths of two rectangular tables is 4:5. What is the ratio of the perimeters? What is the ratio of the areas?