Friday

April 18, 2014

April 18, 2014

Total # Posts: 144

**Algebra 1**

Beatriz is creating graphs for her city's Park Department. Beatriz is trying to persuade the parks department to put in more gazebos for shade. For a local park, Beatriz wants to demonstrate the attendance as it changes every week. She also wants to show the temperature ch...

**math **

Fay's rubber ball bounces exactly half the height from which it is dropped. she drops the ball from the top of a building that is 64 meters tall. how high will the ball bounce on its eight bounces? please help me

**Statistics**

The average teacher's salary in North Dakota is $41,027. Assume a normal distribution with standard deviation of $5200. A. what is the probability that a randomly selected teachers salary is less than 40,000? B. What is the probability that the mean for a sample of 80 teac...

**Statistics**

During September, the average temp of laurel lake is 64.2 degrees. the standard deviation is 3.2 degrees. Assume the variable is normally distributed. For the randomly selected day, find the probability that the temp will be a. above 62 degrees b. below 67 degrees c. between 6...

**solid mensuration**

a is 60m while b is 40m. then divide both 60m and 40m in to two so 60/2 and 40/2 the area is (pie)(30)(20) so the area is 1884.96m^2

**Math**

What is the value of the descriminant of 2x2-13x-7=0? And what can you learn to know about the roots from that value?

**CHEMISTRY**

THE SOLUBILITY PRODUCT CONSTANT FOR BaSO4 AT 298K IS 1.1X10-1O POWER. CALCULATE THE SOLUBILITY OF BaSO4 IN MOL\L AT 298K

**Spanish 2**

Fill the blank with the correct object pronoun. A nosotros ___________ aburre ir de compras.

**Chemistry**

How many moles of H20 are in 430g of H20?

**Art**

1.mexico

**nursing**

500 grams of sugar occupies a volume of 0.315 L. what is the density of the sugar in g/mL?

**Chemistry**

4.6*10^-7

**Chemistry**

Molar mass of PbO: 446.4 g/mol Molar mass of Pb: 621.6 g/mol (1210000g/446.4)*621.6 = 1684892g = 1684 kg

**physics**

brakes are applied in bringing in a 1200-kg car moving at 25 m/s to rest in 20.0 s. show that the amount of braking force is 1500n.

**physics**

brakes are applied in bringing in a 1200-kg car moving at 25 m/s to rest in 20.0 s. show that the amount of braking force is 1500n.

**math..solve for u again.**

sorry. u-2√u=3

**math..solve for u again.**

the answer should be 9

**math..solve for u again.**

the answer should be 9

**math..solve for u again. **

u-2√2=3. please show work

**Math..solve for u**

Solve u-2[2=3 [ is square root. Please show work

**Physics**

2. A person would like to jump over a river using a motorcycle and a ramp. The frictionless ramp is inclined at an angle of 42.5 degrees, has a length of 52 meters, and the motorcycle's engine produces a constant force of 915 Newton’s directed up the ramp, parallel to...

**physics**

If you exert a force of 60 N on a car, it moves at a constant velocity. (i.e there is a frictional force of 60 N) What is its mass when you exert 80 N on it, it accelerates from rest to 2.0 m/s in 100 seconds?

**Geometry**

The surface area of a cone is 150 pie in 2 . The radius of the base is 10 in. What is the slant height?

**Geometry **

The surface area of a cone is 150ð in 2 . The radius of the base is 10 in. What is the slant height?

**algebra 2**

you are using tiles to make a picture frame for a square photograph with sides 10 inches long. You want the frame to form a uniform border around the photograph, You have enough tiles to cover 300 square inches. What is the largest possible frame width?

**science**

write your plan of action in helping control soil erosion

**Physics**

Five moles of an ideal gas are compressed isothermally from A to B, as the graph illustrates. What is the work involved if the temperature of the gas is 351 K? Be sure to include the correct algebraic sign. I did 8.31x351x5 but the answer is wrong... any help is much appreciat...

**Blank Verse**

I needed the scansion for the word "Cordelia" I believe cordelia is /-/- stressed unstressed stressed unstressed let me know if my thought process is right I appreciate any help!

**Physics**

The drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring. Outside the cylinder is a vacuum. The cross-sectional area of the piston is A = 2.50 10-3 m2. The initial pressure, volume, and temperature of the gas are, respectiv...

**Physics**

Describe 4 everyday situations where mechanical energy is approximately conserved because work done by the non-conservative forces is ignorable. Please mention which non-conservative force is doing negligible work in each case you cite. Thank you!

**English **

I am trying to look for 20 lines of blank verse in shakespeare's play Measure for Measure. I found this: we CANnot WEIGH our BROther WITH ourSELF. great MEN may JEST with SAINTS; tis WIT in THEM. (2.2.16) Did anyone find a bigger chunk of blank verse?

**Physics**

Thank You!!!!!!

**Physics**

Two wheels have the same mass and radius of 4.0 kg and 0.35 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular...

**physics**

pressure is force/area so P=100/2= 50 Pa

**physics**

Well, pressure is force/area but the SI unit for area is m2, so 200 cm2 is 0.02 m2 so Pressure = 150/0.02 = 75 Pa

**Physics**

A rectangularplate is rotating with a constant angular speed about an axis that passes perpendicularly through one corner, as the drawing shows.The centripetal acceleration measured atcorner A is n times as greatas that measured at corner B. What is theratio L1 L2 of thelength...

**Physics**

Thanks!

**Physics**

Each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 19.5 revolutions/s. Find the linear speed v of the car, assuming that the tires are not slipping against the ground.

**English**

I need another word for wake up call, something along the lines of a shocking truth. Thanks!

**chemistry**

Calculate the final temperature of 289 of water initially at 35 upon absorption of 20 of heat.

**pre ap chemistry**

how many CaI2 are presented in 3.28 moles?

**physics**

A 358-kg boat is sailing 15.9° north of east at a speed of 1.80 m/s. Thirty seconds later, it is sailing 36.6° north of east at a speed of 3.68 m/s. During this time, three forces act on the boat: a 29.7-N force directed 15.9° north of east (due to an auxiliary eng...

**physics**

thanks for the help :)

**physics**

it takes you 8.8 minutes to walk with an average velocity of 1.3 m/s to the north from the bus stop to the museum entrance. how far did you walk? answer in units of m

**physics**

A 322-kg boat is sailing 14.4° north of east at a speed of 1.86 m/s. Thirty seconds later, it is sailing 38.4° north of east at a speed of 3.72 m/s. During this time, three forces act on the boat:

**Physics**

A 358-kg boat is sailing 15.9° north of east at a speed of 1.80 m/s. Thirty seconds later, it is sailing 36.6° north of east at a speed of 3.68 m/s. During this time, three forces act on the boat: a 29.7-N force directed 15.9° north of east (due to an auxiliary eng...

**Child Psychology**

Researchers have concluded that A. the proportion of REM sleep to N-REM sleep is similar in infants and adults. B. REM sleep provides needed brain stimulation to neonates. C. REM sleep is mostly absent in neonates. D. the proportion of REM sleep to N-REM sleep increases as a c...

**Child Psychology**

Which of the following statements is the simplest way to describe respiratory distress syndrome to someone who wants to understand it? A. It’s a cluster of breathing problems that often affects premature infants. B. It’s a breathing disorder mothers sometimes develop...

**Child Psychology**

In comparison to concordance rates for autism in dizygotic twins, monozygotic twins are _______ likely to develop the same illness. A. significantly less C. significantly more B. somewhat less D. somewhat more

**Child Psychology**

In terms of development, Piaget believed that A. child development is haphazard, random, and based on experience. B. cognitive development proceeds by stages that are universal across cultures. C. children learn in different sequences based on their environment. D. perception ...

**the colony of Vancouver Island to 1858**

why did the British Government grant a trade monopoly to the HBC on Vancouver Island ? i really cannot find the answer :/

**OChem**

For Extraction using a separatory funnel, what is poured into the funnel first the solution that is to be extracted or the solvent?

**chemistry**

How many atoms of sulfur are present in 32.0 moles of sulfur? why?

**Algebra**

Can someone explain to be how to put (x/ (x^2-4)) in another form... please show step by step thank you!

**Algebra**

Can someone explain to be how to put (x/ (x^2-4)) in another form... please show step by step thank you!

**college chemistry**

A galvanic cell is constructed with a silver-silver chloride electrode, and a nickel strip immersed in a beaker containing 4.97 x 10-2 M solution of NiCl2. Determine the balanced cell reaction and calculate the potential of the cell. in volts, assume a temperature of 25°C

**Finance**

9.26%

**Calculus**

An epidemiologist determines that a particular epidemic spreads in such a way that t weeks after the outbreak, N hundred new cases will be reported where N(t)= 5t/(12+t*2). At what time is the epidemic at its worst? What is the maximum number of reported new cases?

**chemistry**

what is the effect of the absence of the catalyst on the outcome of the thermal decomposition of KCLO3

**5th grade math**

i think you are smart

**Math**

What is the greatest possible product of a 2-digit and a 1-digit number? Explain how you know

**CHEMISTRY..please help..thanks**

For the following reaction, it is found at equilibrium at a certain temperature that the concentrations are [CO(g)] = 2.7 multiplied by 10-4 M, [O2(g)] = 1.9 multiplied by 10-3 M, and [CO2(g)] = 1.1 multiplied by 10-1 M. 2 CO(g) + O2(g) reverse reaction arrow 2 CO2(g) Calculat...

**CHEMISTRY..please help..thanks**

If you add 23.5g of NaCl to 1.2 kg of water, what will be the boiling point and the freezing point of the new solution? (Kf=1.86, Kb=0.52) (Please show work, I appreciate everything)

**chemistry hw, please help**

If you titrate 12.6 mL of an unknown monoprotic (one H) acid with 13.0 mL of 0.140 M NaOH, what will be the concentration of the acid? If you add 23.5g of NaCl to 1.2 kg of water, what will be the boiling point and the freezing point of the new solution? (Kf=1.86, Kb=0.52) ((i...

**CHEMISTRY..please help..thanks**

Calculate the new molarity if each of the following dilutions is made. Assume the volumes are additive. (a) 52.3 mL of water is added to 27.1 mL of 0.124 M KOH solution (b) 110. mL of water is added to 54.2 mL of 0.808 M NaCl solution ((please show work, thank u so much)

**CHEMISTRY..please help..thanks**

A laboratory assistant needs to prepare 325 mL of 0.110 M CaCl2 solution. How many grams of calcium chloride will she need?

**CHEMISTRY- intermolecular forces**

What intermolecular forces act in the following: H2 PH3 CH3NH2

**CHEMISTRY..please help..thanks**

The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250. kJ/mol, respectively. Silver's normal melting point is 962°C, and its normal boiling point is 2212°C. What quantity of heat is required to melt 13.0 g of silver at 962°C?

**CHEMISTRY..please help..thanks**

The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250. kJ/mol, respectively. Silver's normal melting point is 962°C, and its normal boiling point is 2212°C. What quantity of heat is required to melt 13.0 g of silver at 962°C?

**math**

round 423 and 17 to the nearest ten then add the two rounded numbers

**world history**

like when no one lives in the houses in the community

**world history**

What fator indicates decline in a civilization?

**Child Psychology**

A. actually beyond Sally’s capability. B. within Sally’s zone of proximal development. C. an innate process that needs only nurturing to unfold. D. too difficult for a Sally’s age and should be attempted later.

**11th grade**

If m<A = 45, AB = 10, and BC = 8, the greatest number of distinct triangles that can be constructed is: 1) 1 2) 2 3) 3 4) 0

**9th grade**

idk

**Geometry**

If two sides of a triangle are 12 cm and 20 cm, the third side must be larger than ________ cm and smaller than ________ cm. Fill in the blank and explain, please and thank you!

**physics**

1.21 kg times 5. m/s

**Math**

How do I write this as a numeral? Seven hundred seven hundred-thousandths

**Geometry**

How can I draw the truth table for the following? : ((non p) ,(non q)) and non (p or q) and, what can you conclude from these tables?

**english**

which audience did thomas paine,benjamin franklin, thomas jefferson, and patrick henry aim for ?

**social studies**

what are coordinates for the point marked j

**Macroeconomic**

1 An example of an economic aggregate is 2 A business cycle is 3 The topics studdied in acroeconomics include 4 A price ceiling will have no effect if 5 Secular long run growth is 6 The human Development index is

**payroll accounting**

I need the final project in payroll accounting AC 122- 02 AU

**simple subjects,simple predicate**

People come from all over to climb the rocks.

**simple subjects**

Our tour guided took us to some of the shops after lunch.

**english**

Draw a line under the complete predicate. Circle the simple predicate.. My hikers' club went to the Mojave Desert. We drove to Joshua Tree National Monument. I climbed boulders with our group leader.

**math**

how knowing the number of pennies in one jar can help you estimate the number of pennies in a second jar that is four times as large. give me an example.

**simple subjects**

competing

**simple subjects**

Fifty contestants are competing for first prize this year.

**Spanish #2 (URGENT)**

Ponte los zapatos de futbol. Ve al campo. Golpea el balon con el pie. No te entiendo que quieres decir con las demas preguntas..

**Spanish (URGENT)**

Saber lo vas a usar cuando haces una pregunta por ejemplo: Quisiera saber cuando entras a la universidad. Conocer lo vas a usar por ejemplo cuando tambien haces preguntas Quisiera conocer a tu verdaderos padres?

**simple subjects**

The rules require that each contestant make his or her own kite.

**simple subjects**

Last year I made a beautiful red box kite.

**simple subjet**

girl

**simple subjet**

A fifteen-year-old girl was awarded first prize a brand-new kite.

**simple subjet**

Last year I made a beautiful red box kites.

**simple subjects**

competing

**7th grade math**

what is 9,234 divide [3x3(1+8 to the 3rd power)]

**social studies**

Compare and contrast the early colonial empires of Portugal, Spain, and England in terms of motives, economic foundations, and relations with Africans and Indians. What factors explain the similarities and differences in the two ventures?

**social studies**

Discuss and relations between the English settlers and the Indians of the southern Atlantic coast