# Posts by Noah

Total # Posts: 277

**spanish**

explain the significance of the song guantanamera

**Math**

I have tried to look up some but it’s no use google just sucks for me and here’s a couple -13x=-65 r/7=-8 b-10=-14

**Math**

I really need help with unit 5 lesson 14 Equations and inequalities unit test I have been working on this for days but I just don’t get it

**9th grade math**

i spelt my name wrong lol

**Physics**

Find the de broglie wavelength of a 1500-kg car when its speed is 80 km/h. How significant are the wave properties of this car likely to be?

**Physics**

Can someone tell me what the mass of mars is compared to the earth? Mars mass is 6.39 × 10^23 and Earth mass is 5.972 × 10^24 thanks. :3

**Math**

How many squares with sides that are 6 inches long are needed to cover a square with a side length of 30 inches without overlaping?

**algebra**

also can anyone solve this A printing company uses the formula C=0.5x+10 to find the cost of printing x business cards which equation correctly solves the formula for x?

**algebra**

Rearrange the formula KE = 1/2 mv^2 for m

**math **

Which number can be added to a rational number to explain that the sum of two rational numbers is rational? a: pi b: 3 7/8 c: square root of 8 d: square root of 47

**Physics**

A rocket that weighs 7840 N on earth is fired. The force of propulsion is + 10 440N. Determine a) the mass of the rocket, b) the acceleration of the rocket, c) the velocity of the rocket at the end of 8.0 s.

**math**

Beth leaves her home on her bike, traveling down a long country road, at the rate of 8 mph. Her brother, Brandon, left 15 minutes after Beth on his golf cart along the same country road, traveling 12 mph. How long will it take Brandon to catch up with Beth?

**algebra**

When using the big hose and the small hose, Sam can fill her pool in 15 minutes. The small hose when used alone takes 60 minutes to fill the pool. How long would it take Sam to fill her pool using only the big hose? Don't understand how to set up equation.

**social studies**

Did you get a 100 from using though's answers?

**Math**

Answer should be on pg 858 in your book

**Calculus **

My question is with a multi-part homework assignment that we got in class. The information given is : A factory manufactures widgets. The rate of production of widgets after t weeks is widgets/ week. The equation for this is dx/dt=30(1-(20/((t+20)^2))). The actual questions ...

**Physics**

1)We consider a hot-air balloon of mass 251 kg (basket and envelope). The spherical envelope of the balloon has a diameter of 19 m when fully inflated. To what temperature (in °C) must the enclosed air be heated for the balloon to carry five standard men? Assume the ...

**geometry**

A rectangle has a length that is 2 less than 3 times the width. If the perimeter is 84, find the dimensions of the rectangle.

**geometry**

Help!!! Line segment EF in the xy-coordinate plane has endpoints with coordinates (-4,9) and (6,4). What are two possible locations for point G so that G divides EF into two parts with lengths in a ratio of 1:4?

**geometry**

I have no clue to this. Please help. Line segment CD has endpoints with coordinates (1,2) and (9,6). What is the location for point E so that E divides CD into the ratio 3:1?

**Math**

Write the ratio in simplest form. 50:10 A.25:5 B.10:2 C. 5:1 D.1:5 Is the answer C?

**math**

you have an account which pays 10.4% annual interest, what is the minimum amount which must be invested to have $4,000 in 11 years, assuming you compound a. daily b. continuously

**Math**

If 1 bag of mulch covers 2 cubic feet, how many bags of mulch do you need to cover a garden three inches thick, eight feet long, and four feet wide?

**Math**

you use ttm dont you

**Government**

its right

**Life Orientation**

For my question

**Chemistry**

I know this is pretty general, but it is the question. What can you say about the energy spread of the radiation emitted by an atomic gas?

**Physics**

An organ pipe that is open a t both ends has a fundamental frequency of 382 Hz. What is the length of an closed end pipe that has a fundamental frequency exactly one octave higher? Report your answer in m.

**partail fraction-maths help!plz**

x^4+3x-2/[(x^2+1)^3(x-4)^2]=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+Ex+F/(x^2+1)^3+G/(x-4)+H/(x-4)^2 find A,B,C,D,E,F,H thank am tired of solving holy jesus!!!

**sociology of theory...help**

i can not access the web page at bobpursley..and yes am a university graduate...

**math**

Your company recently made a purchase of 25 identical tables. The purchase price after adding 5% sales tax was $1,706.25. You later realize that you only needed 20 tables. If you decide to return five tables, what would be the refund amount before tax?

**Math**

What shape has 21 faces and 14 vertices

**Algebra A**

I, agree with Steve so the answer would be 76. Please do not post Aops alcumus problems on other websites. If you need help, go to the alcumus forum and post there.

**One Math**

correct

**Mathematics**

40

**Math**

What are the true answers?

**Math**

Hahz

**Chemistry**

Everything is correct, except "E" is Hydrogen Bonding because there is a Hydrogen directly bonded with the Oxygen.

**algebra**

Complete the table below to solve the equation 2.5x − 10.5 = 64(0.5x). x f(x) = 2.5x − 10.5 g(x) = 64(0.5x) 2 3 4 5 6

**Mathematics**

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 16. The material is considered defective if the breaking strength is less than 156.2 pounds. What is the probability that a single, randomly selected ...

**Math**

Y=5sin(3.14(x-3.14/4))

**math**

can someone tell me why 9/15 is equivalent to 3/10 I cant seem to figure it out,??

**Psychics**

a ball is projected horizontally from the edge of a table that is 2.00m high and it strikes the floor at 2.40m from the base of the table. what is the initial speed of the ball

**World history**

What is the difference between the Sunni and the Shiite Muslims? Why did they split?

**World history**

What role did caliph play in history ?

**algebra 2 A**

someone please give me some inital velocitys for fireworks lolol

**chemistry**

idk

**Math**

6.5 feet

**math**

the ratio of gas to ethanol is 17 to 3, how much ethanol is in 600 gallons of mixture

**PreChem**

Classify each of the reactions. precipitation, acid-base neutralization, redox C2H4(g)+3O2(g)----> 2CO2(g)+2H2O(l) Cu(s)+FeCl2(aq)---->Fe(s)+CuCl2(aq) HI(aq)+LiOH(aq)---->H2O(l)+LiI(aq)

**civics**

it is libel

**Algebra please help**

koop is real is right i just toke the test and i got a 100%

**Chemistry**

I figured it out, the numbers a really 0.236-0.141, I was looking at the wrong Reduction half-reactions.

**Chemistry**

Consider the following description of a voltaic cell: A 1.0 M solution of Ni(NO3)2 is placed in a beaker with a strip of nickel metal. A 1.0 M solution of SnSO4 is placed in a second beaker with a strip of Sn. The two beakers are connected byba salt bridge and the two ...

**Science**

ud my man it's obviously D because it looks complicated

**Chemistry**

a solution of 25 ml of HCL is neutralized by 42.5 ml of 0.10 M concentration of NaOH.Need to write a balanced equation for the reaction

**math**

Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 3 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to three decimal places.)

**physics**

hummingbirds beat their wings 1500 times in 30seconds calculate frequency and the period

**Chemistry**

when electricity is passed through water, the water decomposes into hydrogen gas and oxygen gas. when 10.00 kg of water were decomposed this way, 5788 l of oxygen gas were produced at 25 degrees celsius and 1 atm pressure. what is the percent yield of oxygen by volume?

**Chemistry**

If the density of ethyl alcohol is 0.789 g/mL, how many quarts can be produced by the fermentation of 100.0 lb of sugar?

**physics please help**

Two carts with masses of 4.20 kg and 2.44 kg move toward each other on a frictionless track with speeds of 4.92 m/s and 3.87 m/s respectively. The carts stick together after colliding head-on. Find the final speed.

**Business Statistics**

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long (The Wall Street Journal, October 12, 2012). A ...

**science**

the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

**science**

the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

**Chemistry**

hey i have that question too!! is urs on a test by chance??? I'm confused by e

**chemistry**

If you mix 50 grams of NaHCO3 in 2.0 liters of water, calculate molarity & molality

**Check my social studies(PLEASE)**

thanks

**science**

thx james

**social studies**

Yes thank you I got 7/7!!

**geometry**

My problem is with a parallelogram that has three numbers which are 88 degrees,104,and 80. Then the fourth on is 8x minus 2 how do I slove this

**science(CHECK ANSWERS)**

number 1 is a

**Health part 2**

The answers is B. becuase I took the test

**physics PLEASE HELP ME**

6.49 m/s

**Astronomy**

Cheating on the final exam, I see. :P Dont. Try to figure the answer out yourself!

**Astronomy**

Cheating on the final exam, I see. :P Dont. Try to figure the answer out yourself!

**math**

suppose that a, b, c ,and d are positive integers whose sum is 100 and a-c=5.What is the greatest possible value of ab-cd answers

**Math**

PLEASE HELP! Im in 3rd grade!

**Math**

Stefan drove 558 in 9 hours. He then drove 120 miles in 3 hours. What was Stefan's average speed for the whole trip???

**social studies**

did germany take over sweden in WW2

**Alg 1**

2+2

**physics**

What is the maximum current allowed in a 7.5 W, 300 resistor?

**physics**

115.38

**math**

75/(25+75)

**health**

Nearly ________ of the heat produced in the body is the result of muscle contraction. A. 55 percent B. 65 percent C. 75 percent D. 85 percent i think its D

**physics**

Imagine a spring floating in space. This spring has a very small length when it is unstretched. The spring constant for this spring is 4.2 N/m. Now place 2.6 μC charges on each end of the spring, and allow it to stretch until it reaches a new equilibrium. What is the new ...

**health**

t is recommended that a person ________ to manage and reduce stress. A. Talk to family and friends B. Eat more frequently C. Beat oneself up D. None of the above i think its A

**health**

oh it would be D

**health**

You can find ways to manage stress by ________. A. Keeping what’s causing your stress to yourself B. Dismissing any signs of stress C. Pushing yourself to work harder D. Getting active and eating healthy i think its B

**health**

hat is physical stress? A. A physical reaction of the body to various triggers B. A physical reaction of the mind to various triggers C. A physical reaction of the soul to various triggers D. A physical reaction to the heart to various triggers i think its a

**health**

thanks

**health**

Extreme efforts to lose weight among teenagers can lead to ________. A. Obesity related illnesses B. Eating disorders C. More energy D. High self-esteem i think its b

**health**

thanks agian

**health**

What type of questions should a patient ask a doctor before getting cosmetic surgery? A. How many years has the doctor performed the surgery B. Who administers the anesthesia C. In which state is the doctor licensed to practice surgery? D. All of the above i think its D but i ...

**health**

yeah that's what i figured out thank you very much ms sue

**health**

What can a parent do to help their child develop a positive body image? A. Watch television with their child and discuss the media images that they see B. Criticize the child for what he or she eats C. Force the child to exercise without breaks D. Withhold food from the child ...

**health**

then it'd be A correct

**health**

In order to lose weight you have to ________. A. Burn more calories than you consume B. Eat less C. Burn less calories than you consume D. Eat more i think its b

**health**

thank you

**helath**

If you’ve decided to lose weight then ________. A. Even modest weight loss can lead to big health benefits B. Modest weight loss can lead to little health benefits C. Large weight loss can lead to little health benefits D. Little weight loss can lead to little health ...