Monday

April 21, 2014

April 21, 2014

Total # Posts: 1,295

**Chemistry **

If the solubility constant for Ag2CO3 is equal to 8.1x10^-12 how many grams of Ag2CO3 will dissolve in a .0001 M solution of Na2CO3?

**Social Studies**

What characteristic did the Mauryan and Mughal empires share? -Both helped spread Buddhism -Both helped spread Islam -Both embraced the idea of religious tolerance -Both were begun by Aryan people

**chemistry**

A 4.70 g sample of a certain gas occupies 530. mL at STP. What mass of the same gas is present in a 1.15 L container at 40.5°C and 785 mm Hg?

**math **

simplify 8g^7h^-3 over (like a fraction) 2g^4h^8 a. g³ over 4h^5 b. 4g³ over h^11 c. 4g³h^5 d. 4h^11 over g³ thank you for your help!

**Physics**

A turntable rotates counterclockwise at 63 rpm. A speck of dust on the turntable is at θ = 0.57 rad at t = 0 s. What is the angle of the speck at t = 9.5 s? Your answer should be between 0 and 2π rad.

**Math: Thinking Mathematically**

Never Mind... I Just figured it out. Thanks Steve for help!!! :D

**Math: Thinking Mathematically**

Hey Steve, I'm also stuck on this problem too. I understand the part about the height being 12 yards since the three cables are attached 4 yards below the top. I can't figure out how you ended up with 15 yards. When you say that the other leg is 9 yards, are you talkin...

**Global studies**

The indigenous people of British Columbia are famous for carving __________, or tall poles containing the symbols of a particular group, family, or clan. a. monuments b. family pillars c. totem poles *** d. animal columns

**Algebra**

Long Divide: (x^2 + 3x + 5)/ (x + 3) Thanks.

**6th grade social studies**

I need help unscrambling these letters to form two words: inenidj tcain They go along with the phrase ______ _____and Persia.

**Chemistry **

If the surface area of a human body is 17,500 square centimeters, what is the total weight of the atmosphere on a human body expressed in pounds?

**math**

Wandy and Paul are saving to buy their home. Wandy saved $16 390 while paul has save $18 000. how more has paul saved. how much altogether?

**Physics**

A football is kicked at ground level with a speed of 17.9m/s at an angle of 39.0∘ to the horizontal. How much later does it hit the ground?

**spanish**

I need hep unscrambling these words can anyone help? 1)GJAUDRO 2)ARBCUE 3)EUPQIO 4)MCLICISO 5)PEASRA 6)NEIST

**Language Arts (Check answer)**

because the story is written as a series of dated reports, we can see that the story is structures according to a. Cause and effect b. Chronological order c. Comparison and contrast d. Problem and solution ***

**Educational tech (Please check my answers)**

Thank you

**Educational tech (Please check my answers)**

Which of the following is an example of safe behavior online? A.) Chatting with someone you have not met before B.) Providing your email address when asked in an IM C.) Leaving your computer open at a public library D.) Communicating with friends on secure websites *** What is...

**physics**

in a experiment to measure the speed of sound in glass, a pulse of sound is sent into a glass rod, 14 m in length. the reflected sound is detected after 5.6 ms (0.0056 s). calculate the speed of sound in glass.

**physics**

thx man

**physics**

in a game a toy car slides down a slop if the top of the slope is 2 m higher than the foot of the slope how fast will the car be moving when it reaches the foot assume that all of its g.p.e is transformed to k.e (i'm 8th grade so simple answers pleas)

**Math**

Meenah made a conjecture that any even number will be divisible by 4. Test her conjecture. Explain whether it is correct or incorrect.

**8th grade science**

okay thank you Ms. Sue I also appreciate your help :D

**8th grade science**

okay thank you Sandra James :) I really appreciate your help. Thank you so much!

**8th grade science**

I'm pretty sure that you can rule out answer choice A because I don't think that the sun can really cause the planet to shrink but I'm not sure whether the answer would be answer choices B or C, so can someone please help me? Thank you :D

**8th grade science**

Q: how might the length of mercury day affect the temperature ranges found on the planet? A: A)Over time the closeness of the planet to the sun has caused it to shrink. B)The entire planet would get burned by the intense amount of sunlight. C)Parts of the planets facing the su...

**Pre-Calc**

Prove: 2 - sec^x / 1+ tan ^x = cos 2x

**geometry**

The measure of the angles in a parallelogram total 360. Write and solve a system of equations to determine the values of x and y. The parallelogram shows x and 5.5y. The triangle shows x and y. I have the first equation at 180= x + 5.5y. What would be another equation for the ...

**physics-important fast**

A 1532.9 kg car traveling with a speed of 12.7 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.4 m?

**physics**

Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 9.1 rad/s and that you have been riding for a "distance" of 8.6 x 103m. The wheel has a radius of 0.45 m. For how many minutes have you been riding ...

**American History**

Alright thanks Ms. Sue :)

**American History**

I'm not sure if this is a correct answer, but this is my opinion: "If John F. Kennedy was in office today, he would most likely use more often since there's more technology avalible, but he would use more wisely."

**American History**

If John F. Kennedy was in office today, what do you think his approach to the media might be?

**Geometry**

True or False: If a figure does not have point symmetry, it cannot have reflection symmetry.

**Chemistry**

some of the acetic acid splashed out the beaker when you dropped the tablets into the acetic acid. How would this affect your measurement? Would your final calculated mass of sodium bicarbonate in the tablet be artificially high or low as a result of this splashing?

**houston community college**

incorrect each year the amount of interest gained would increase it would not be the same for each year it would increase

**Maths**

Factorise these quadratics X^2-36 X^2-121 X^2-169

**Math 8th grade**

-24 (fooooooooooool)

**science**

i need to know about acids and alkalis back in arab times

**Anyone wanna help me with this math?**

I need the answers to 12 and up now

**physics**

A car is traveling around a circular banked road without friction which is inclined at 72 degrees which has a vertical height of 25 meters. When the car is traveling at 16 m/s around the road, it is moving at the bottom on the incline (inner radius of the road when viewed from...

**english**

I am a bit confused about what type of sentence this would be.... Hurricane Katrina destroyed many homes in New Orleans it destroyed many business, too. Chose from: correct, fused, comma splices and fragment

**math**

125% of what number is 50? do you do 1.25 x 50?

**math**

find 15% of 60, 20 is what percent of 5. how do you do this?

**physics**

It's a snowy day and you're pulling a friend along a level road on a sled. You've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. You've been walking at a steady 1.5m/s, and the rope pulls up on...

**American History**

What does the Constitution not list the reserved powers of? The choices are Congress, President, state government, or national government

**Physics **

A car is traveling 28 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.5 m/s2. How far does the car go before it stops?

**Physics **

A car is traveling 28 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.5 m/s2. How far does the car go before it stops?

**Math**

Find an inverse variation equation that models the data. Length 4,6,8,9,10 Weight 24, 16,13,11,9

**algebra**

thanks

**algebra**

52 mph. but how do I show my work?

**algebra**

if it takes you half an hour to travel 26 miles to work what is your average speed

**english **

from the book there are no children here what does " William died a few months later when a friend, fooling around with a revolver he thought was unloaded, shot William in the back of the head. Lafeyette never learned what happened to the snake." this mean? an interp...

**math**

62/d when d=3.1?

**geometry**

Three line segments have the following measures: AB=6, BC= 3, and AC=8. If A,B, and C are distinct points, what conclusions can you draw about points A,B, and C? Draw a diagram and explain your answer.

**phsics**

a car moving with an initial velocity of 60 m/s south has a constant acceleration of 10 m/s^2 north. After 12 seconds its velocity will be: A) 60 m/s south B)60 m/s north C) 40 m/s north D) 40 m/s south

**physics **

during a journey over which speed varies, the maximum attained speed in comparison to the average speed is always: A)one half of it B) greater than it C)less than it D) equal to it E) none of this

**phsics**

throughout a time interval, while the speed of a particle increases as it moves along the x-axis, its velocity and acceleration might be: a) positive and negative B) negative and negative c) negative and positive D) negative and zero E) positive and zero

**Acc. Algebra 2 **

Solve for s пr(s+r) Solve for a S= a(1-r^n)/1-r

**Acc Algebra 2**

The numerator of a fraction is 6 less than its denominator, and the value of a fraction is 3/5. Is this right?? 6-x/6+x=3/5

**Acc. Algebra 2**

One angle of a quadrilateral has a measure a°. Find the average of a measures of the other three angles.

**Acc Algebra 2**

Ohhh ok!! Thank you very much!!!

**Acc Algebra 2**

Why r we subtracting???

**Acc Algebra 2 **

The length, width, and height of a rectangular box are consecutive integers, and the largest dimension is k cm. find the volume V of the box (Hint: V= lwh)

**physics**

this is what you got: 70 at W10°N takes them (-98.48,+17.36) but on a coordinate grid system, wouldn't 10 degrees N of W mean 170 degrees? so shouldn't the second part be <70 cos 170, 70 sin 170> the first part is the same, but the second part is different, s...

**physics**

An army tank division leaves base and travels 30 miles at 30° S of W and then turns and travels 70 miles at 10° N of W. What is their total displacement from base at the end of the trip? the answer i got is 94.96, what did you get?

**physics**

yea i was thinking that too,

**physics**

A spy stands on the sidewalk by an apartment building examining a foreign embassy across the street. The spy then climbs 30 m to the top the building and then slides 40 m along a wire at a 20° angle below right to reach a window on the embassy. What is their total displace...

**Lang ARts**

okay thx

**Lang ARts**

hat fact best explains why it is significant that Angelou's narrative is set in 1940? In 1940, the United States was not yet involved in World War II. In 1940, segregation of blacks and whites was still the norm. In 1940, most high school students did not go on to college....

**Math! Please Check My Answers**

thx

**Math! Please Check My Answers**

:\

**Math! Please Check My Answers**

*sigh*

**Math! Please Check My Answers**

Anybody there?

**Math! Please Check My Answers**

Please Help!

**Math! Please Check My Answers**

Key: ☺ = My Answer! 2. Write a word phrase for the algebraic expression. 3x - 7 A. The difference of three times a number x and seven. B. The difference of seven and three times a number x. C. Three times a number x fewer than seven. ☺ D. The quotient of three time...

**MAth**

okay i will

**MAth**

thanks

**MAth**

oh okay

**MAth**

or this: C = 0.25t + 0.75 just wondering

**MAth**

so its not C= 0.75 + 0.25t

**MAth**

The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes.

**College Algebra**

Solve system by method of elimination 0.07x + 0.02y =-0.07 0.08x - 0.06y = 0.07

**College Algebra**

Find the equation of the parabola y = ax2 + bx + c that passes through the points. To verify your result, use a graphing utility to plot the points and graph the parabola. (−2, −15), (−1, −4), (1/2,-10) y=?

**chemistry**

Combustion of 1 mol of octane results in the formation of 8 mol of carbon dioxide (CO2) . The molar mass of octane is 114.22 g/mol, and the molar mass of carbon dioxide is 44.01 g/mol. If an engine burns 550.0 g octane as it runs, what mass of carbon dioxide is released into t...

**chemistry**

Combustion of 1 mol of octane results in the formation of 8 mol of carbon dioxide (CO2) . The molar mass of octane is 114.22 g/mol, and the molar mass of carbon dioxide is 44.01 g/mol. If an engine burns 550.0 g octane as it runs, what mass of carbon dioxide is released into t...

**College Algebra**

Find an equation that has the given solutions. (There are many correct answers.) -1/6, -8/9

**College Algebra**

Find all solutions of the equation. Check your solutions in the original equation. (Enter your answers from smallest to largest. Enter NONE in any unused answer blanks.) 16t^2/3 + 40t^1/3 + 25 = 0

**math**

A. 12+x+8=2x 20+x=2x (subtract "x" from both sides) x=20 B. x+2+15=2+2x (subtract "2" from both sides) x+15=2x (subtract "x" from both sides) x=15 (Krista's age) 15+2=17 (Barrie's age now) 17+6=23

**College Algebra (Urgent)**

The demand equation for a product is p = 60 – 0.0004x, where p is the price per unit and x is the number of units sold. The total revenue for selling x units is shown below. Revenue = xp = x(40 – 0.0004x) How many units must be sold to produce a revenue of $260,000? ...

**College Algebra**

Use the position equation given below, where s represents the height of the object (in feet), v0 represents the initial velocity of the object (in feet per second), s0 represents the initial height of the object (in feet), and t represents the time (in seconds), as the model f...

**College Algebra**

A rancher has 100 meters of fencing to enclose two adjacent rectangular corrals (see figure). The rancher wants the enclosed area to be 374 square meters. What dimensions should the rancher use to obtain this area? (Round your answers to 2 decimal places. Enter the smaller val...

**College Algebra**

A pharmaceutical salesperson receives a monthly salary of $2480 plus a commission of 7% of sales. Write a linear equation for the salesperson's monthly wage W in terms of sales S. W(S) =

**Algebra**

An executive flew in the corporate jet to a meeting in a city 1700 kilometers away. After traveling the same amount of time on the return flight, the pilot mentioned that they still had 300 kilometers to go. The air speed of the plane was 600 kilometers per hour. How fast was ...

**chemistry **

Using the equipment below, explain how to prepare a .00052 HCL solution farom a regent bottle containing .13 HCL using only the equipment below. Note, you may make multiple solutions but you are not allowed to combine columes. for example, if you need 2 mLs of a solution, you ...

**maths**

what's the value of A if cot^A(1 - 3 sec A + 2 sec^2 A)=1 and A>90 degrees.

**urgent physics..**

Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the b...

**urgent...maths**

Find the sum of all primes p, such that p divides u(p), where u(p) is the p-th Fibonacci number. this iss very urgentt...

**math**

Find the sum of all primes p, such that p divides up, where up is the p- th Fibonacci number. please tell me the answer it's urgent about this..///

**math**

thanks i have now understood the problem.............

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