# Posts by Sabrina

Total # Posts: 542

calculus
Hi, could someone please help me with this hw question asap? Given that the integral of (e^x*sin(5x))dx=((e^x)/26)*(sin(5x)-5cos(5x))+c, evaluate the integral from 1 to e^(pi/10) of sin(5ln(x))dx

Math
How to get 44 using the digits in 2017. You can use +,-,×,÷,?,!,!!,exponents. Double digit numbers are allowed. You can use each digit only once.

math
The first time the shuttle fires is at 7:44:35:16 on Friday morning and the next time it fires them is in the wee hours at 2:26:33:07 on Saturday morning. How much time has elapsed between one firing and the next? 7:44:35:16 means hours:minutes:seconds:hundredths of seconds

Math
A field hockey tournament is to be held in Yellowknife, NWT. According to regulations, the field is 25 yds by 100yds. For officials, support group and team members, a uniform rectangular strip of manicured lawn is to be installed by a local business group. If the area of the ...

Math
Calculate surface area and the volume of a box that is 3m by 2m by 7.5m

Math
Mr. Jones makes 3% commission on his sales of widgets. At a different company, Mr. Smith makes 5% commission selling the same widgets at the same price. Mr. Smith sold 500 fewer widgets than Mr. Jones, and they both earned the same commission.How many widgets did Mr. Smith sell?

algebra
how do I write 2.5=h3o^+ in scientific form?

Physics
What is the change in entropy of the lead when 2.0 kg of molten lead at its melting point temperature solidifies? For lead: L V = 207 kcal/kg at 1744°C, L F = 5.9 kcal/kg at 328°C. Express your answer using two significant figures in kcal/K

Physics
The figure shows a pV diagram of a gas for a complete cycle. During part bc of the cycle, 1190 J of heat flows into a system, and at the same time the system expands against a constant external pressure of 7.00 × 104 Pa as its volume increases from 0.0200 m3 to 0.0800 m3...

Social Studies
Thank you Ms. Sue ^^/

Social Studies
Ms. Sue I did read it but it doesn't say about how the colonies got adapted to their environment.

Social Studies
Hmm, is that all Ms. Sue? They grew different crops and built different style homes?

Social Studies
I need to know how New England Colonies,Middle Colonies, and Southern Colonies the ways the colonists adapted to their environment.

Social Studies
I need 3 examples of characteristics about the New England Colonies, Middle Colonies, and Southern Colones

Algebra
If anyone can check my work for me that would be greatly appreciated I'm having trouble. Evaluate the expression foe the given value of the variable. |-4b-8|+|-1-b^2|+2b^3 ; b=-2 I got 1 for my answer -4(-2)-8-1+2^2+2(-2) 8-8-1+2^2-4 -1+2^2-4 1

Algebra
Steve thank you so much you made this so much more easier for me I appreciate it I've never used this website before I can't believe how helpful it is :)

Algebra
Which of the following is equal to (3X/5-7)+7 I used the slash mark to represent the fraction symbol. Can someone please help me figure this out? A.) 5X/3 B.) 3X/5 C.) 3X-35/5 D.) (3X-7)+35

Math
I figured out the answer was 9. Thanks for your help though!

Math
Esme is thinking of two integers. One integer is 4 times the other, and their sum is 18 more than 3 times the smaller I integer. What is the smaller integer esme is thinking of?

Math
In a standard set of dominoes, a face of each domino has a line through the center, with 0 to 6 dots on each side of the line. Each possible combination of dots is used exactly once, one combination per domino. What is the probability that a randomly selected domino will have ...

math
How can you use repeated subtraction to find out how many groups of 4 are in 20

Math
Write three equivalent ratios for 15/9

Physics
An electron with a kinetic energy of 0.8 keV is fired normal to the lines of a field of magnitude 50 G. Find: a)the radius of the path b)its acceleration c)its period

History help
thanks :)

History help
okay, understood. I'm just answering question and defining

History help
I don't understand the question, can you help with that? Thanks!

History help
Define the domino theory and the Brezhnev doctrine and discuss how they affected the foreign policies of both the united states and the soviet union during the Cold War.

Physics
A 29.8-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 88.8 N and is directed at an angle of 39 ° above the horizontal. Determine the coefficient of kinetic friction.

Chemistry!!! PLZ PLZ HELP!!
I'm so sorry I'm still confused

Chemistry!!! PLZ PLZ HELP!!
Calculate the equilibrium amounts of each susbtance in the reaction below if an initial amount of 0.1 moles of H2 are brought together with an initial amount of 0.2 moles of I2 and then equilibrium is established at 900K. Kc at this temperature=70. H2 + I2 <-> 2HI

Chemistry
If you had .1 ml in a 1M solution of HCl how much water would you need to dilute it to a pH of 7?

Chemistry
What is the yield of the synthesis of ammonia to 400° C and 500 atm of pressure?

Chemistry
@DrBoB222 30 / 400 * 100 0,75% ??

Chemistry
A saline solution with a mass of 400 g has 30 g of NaCl dissolved in it. What is the mass/mass percent concentration of the solution?

physics
You live at the top of a steep (a slope of ???? degrees above the horizontal) hill and must park your 2200 kg car on the street at night. a) You unwisely leave your car out of gear one night and your handbrake fails. Assuming no significant frictional forces are acting on the ...

chemistry
___Fe(NO3)2 + Al___Al(NO) +__Fe

Math
Rectangular prism below consists of troy's spaceship mode how do you solve it

math
16

math
Ellen needs to buy 180 inches of ribbon to wrap a large present the store sells ribbon only in whole yards how many yards does Ellen need to buy to have enough ribbon

physics
A 400N weight is sitting on a piston. The diameter of the piston is 8 cm. How much pressure does the weight exert on the piston?

Chemistry
Thank you so much Scott ! .

Chemistry
A 10.0g sample of H2O(l) at 23.0degrees C absorbs 209 joules of heat. What is the final temp of the H2O(l) sample?

math
Write the equation in slope-intercept form of the line that passes through the point (-3, 5) and has a slope of 2/3.

math
the external dimensions of a closed box are 8cm by 5cm by 4cm. given that the thickness of the wood of which it is made is 0.5cm, find the volume of the wood used to make it.

HMS. Science
Describe past environments and the history of life.

Chemistry 101
I have been attempting this problem so many times. I don't know if I am plugging in the numbers correctly but I cannot seem to get the answer correct. Please help! A patient arrives in the emergency room with a burn caused by steam. Calculate the heat, in kilocalories, ...

chemistry
For the decomposition of gaseous dinitrogen pentoxide (shownbelow), 2 N2O5(g).....> 4NO2(g) + O2(g) the rate constant is k = 2.8 10-3 s-1 at 60°C. The initial concentration of N2O5 is 1.52 mol/L. (a) What is [N2O5] after 5.00 min? _____mol/L (b) What fraction of the ...

Math
In 2014, the Whaddock Company purchased 1,560,000 units from its supplier at a cost of \$250.00 per unit. Whaddock sold 1,525,000 units of its product in 2014 at a price of \$350.00 per unit. Whaddock began 2014 with 425,000 units in inventory (inventory is carried at a cost of...

Social Studies
How long ago was 1000 C.E. ? You would find the answer by A. Subtracting 1000 C.E. from the present year B. Adding 1000 C.E. to the present year Thank you.

Calculus
The equation of a circle, C, is x^2 + y^2 + 6x - 8y +9=0. Find the center of C and find the radius of C. Show that the C touches the x-axis. Find the equation of the circle which is a reflection of C in the y-axis

pre-cal
find the length of side b ABC to the nearest whole number if A = 42, B = 87, and a = 24

Statistics
The Phillies were accused of cheating their beer customers by not putting enough beer in their 12 oz cups. When 15 cups were selected at random, they were found to have a mean of 11.7 ounces with a standard deviation of 0.5 ounces. At the .01 significance level, test the claim...

Physics
The standard sampling rate (in Hz) used for sampling speech signals in telephony systems is 8 kHz with 8 bits assigned per sample. Based on this fact, calculate how much time it would take to transmit one second of raw digitized speech over a transmission line that has the ...

english
Hello I am having quite a bit of trouble trying to figure out a better way to answer this. 1. In the video, The Fates Present: Pyramus & Thisbe,There are parts of the animated version in which there is a character, who appears at the beginning of the animation first, and who ...

math
\$80.00 + \$21.00 = \$111.00

science
Describe what happens to the electricity produced at 25kV by a power station when its transmitted to a house at 230 V many miles away.

chemistry
a pool is 39.8 m long and 28.2 m wide. if the average depth of water is 4.90 ft, what is the mass (in kg) of water in the pool? enter your answer in scientific notation. the density of water is 1.0 g/mL

math
James needs to bring his grade up to a B (80) in reading. What does he need to get on his next quiz? Quiz 1:77 Quiz 2:81 Quiz 3:74 Quiz 4:?

Math
A basket with 12 apples has a mass of 3105 grams. The same basket with 7 apples has a mass of 1980 grams. Each apple has the same mass. What is the mass of the basket?

English
1. Both Walt Whitman and Emily Dickinson were influenced by the Romantics. Choose one of the two poets. Provide at least three ways that he or she reflects Romantic thinking in his or her writing. Then give an example from one of the works that you studied in this unit that ...

Physics
Explain how you would determine how much error there is between a vector addition and the real results.

Managerial Accounting
The overhead rate for materials handling is \$10 per part based on an estimated total cost of \$900. Products X & Y have 320 and 280 parts respectively. What is the overhead allocated to X & Y? A. Product X \$3,200, Product Y \$4,400 B. Product X \$4,800, Product Y \$4,400 C. ...

physics
What is the velocity of a baseball thrown 40m from third base to first base in 1.9s? Show your work, and simplify please.

Physics
A person pushes a 10 kg crate 5 m up a 29 degree incline with an 80 N force parallel to the incline. The fricitonal force is 20 N. Find the work done: a) by the person b) by gravity c) by friction

General Chemistry
We mix 112 grams of oxygen gas with 118 grams of argon gas in a volume of 1752 mL at 74 degrees celsius. What will be the final pressure of the gas mixture? First, I converted the grams into moles. 112g O2 * (1mol O2/ 32g O2) = 3.5 moles O2 118g Ar * (1mol Ar/ 40g Ar) = 2.95 ...

Physics
A satellite in circular orbit around the earth has an orbital speed of 5 km/s. What is the period of the orbit? Assume the mass of the Earth is 5.98e24 kg.

Social studies
Thank you soooooooo much

Social studies
But I have to turn this assignment tomorrow

Social studies
Oh okay and could you give me the best ending if so

Social studies
It was late 1540s. The skies were clear when we set sail from England. The was sailing to Hawaii to find some precious gold and Jewell basically treasure. So before that we got ready by packing few important stuff that we might be needing throughout this journey. Food was one ...

Social studies

Social studies
But there is no answer below

Social studies
Write a one page story a about an explorer (can be you) Include: where you would explore ( Fiji land) Transportation to get there, food, clothing tools,weapons. All Fromm 1400s or 1500s Does not need current times

Social studies
Ms.sue you know the question I wrote yesterday could give me the starting point of that story pleas

Math
write these pairs with common denominators 5/8 and 1/2 ?

Physics
A ship is sailing west at 5km/h relative to land.To people on the ship, a balloon appears to move away horizontally at 10km/h versus east. A)what is the wind velocity relative to land? B)What is the distance travelled by the balloon in 30 min 1)For a person at rest on the ship...

Social studies
Ms.Sue but how do I make all of this information into a big huge story. Could you give me the starting point. And could you tell me a place which actually matches the info. You gives me pleas.

Social studies
Well the things I want to know about the story is the transformation to get there in 1400s or 1500s, food in those days, clothing, tools, weapons that I would be needing in those days

Social studies
Write a one page story a about an explorer (can be you) Include: where you would explore ( Fiji land) Transportation to get there, food, clothing tools,weapons. All Fromm 1400s or 1500s Does not need current times

Physics HELP
Two blocks of masses m1 = 6 kg and m2 = 6 kg are on either side of the wedge shown in the figure above. Find their acceleration and the tension in the rope. Ignore friction and the pulley.

Physics HELP
Two blocks having mass m1 = 6 kg(m1 on ramp of 30 degrees) and m2 =3 kg are connected by a light rope and slide on a frictionless surface as in the figure below. A force F = 10 N acts on m2 at 20 degrees relative the horizontal. Find the acceleration of the system and the ...

Science
make an observation of food waste occurring in your home and write at least two sentences describe the waste that has occurred.

Physics
Two blocks of masses m1 = 6 kg and m2 = 6 kg are on either side of the wedge shown in the figure above.(m1 on ramp of 30 degrees and m2 on ramp of 60 degrees) Find their acceleration and the tension in the rope. Ignore friction and the pulley.

Physics
Block B has a mass of 4.2 kg and block A has a mass of 2.6 kg. They are in contact and slide over a frictionless horizontal surface. A force of 11 N acts on B.(force applied on block b then block a , they are beside each other) what is the force on B due to A if the blocks are...

Physics
A particle of mass 2 kg has an initial velocity of (4.5i + 3.5j) m/s. It is acted on by a force (5i -2j) N for 2 s. What is its final velocity?

Math
Find lim h->0 [f(2+h)-f(2)]/h where f(x)=|x-5|-7

Math
find limit of h->0 [f(8+h)-f(8)]/(h) where f(x)=sqrt(x)-8

British Literature
I have to write a compare and contrast essay of the characterization of Sir Gawain and The Wanderer and I can't really find a difference between the two characters. I've found many ways I can compare the characters, but no differences. I need help finding a contrast ...

chemistry
For the decompostion of gaseous dinitrogen pentaoxide, 2N2O5(g)--->4NO2(g) +O2(g) . The rate constant is k=2.8 x 10^-3 at 60 degrees C. The initial concentration of N2O5 is 2.45 mol/L. What is (N2o5) after 5.00 min? What fraction of the N2o5 has decomposed after 5 min?

chemistry
What mass of cesium bromine must be added to a 0.500 liter of water (d=1.00 g/ml) to produce a 0.981m solution? what are the mole fraction and mass percent of CsBr?

English!!!
B.) The EDS must reach its destination because the lives of six men depend on it. If Marilyn stays on board, the ship will not reach them. that is the correct answer

Algebra 1
A college student is looking at her monthly checking account records. On September 1, 2008, her checking account held a balance of \$1,050. At the end of March 2009, her checking account held a balance of \$800. What is the monthly rate of change for the student’s checking ...

Biology
Diagram the genotypes of the P1 pea plants from the previous four questions by placing the correct answer on its correct place.

Math
How do I work this problem? A license plate is to consist of 2 letters followed by 5 digits. Determine the number of different license plates possible if repetition of letters and numbers is not permitted. is this correct 26*26*10*10*10*10*10= 67,600,000

Physics
a student pushes on a desk with a force of 75 N causing it to begin sliding. if the desk weighs 400 N then calculate the coefficient of static friction between the desk and the floor

math
-4x-4y=12 16y=-16x-48 identify the solution of the system or equatuions

CULTURAL DIVERSITY
A story narrative is probably Asian if it is i put B. episodic, event-driven,and contain judgmental remarks can someone check my answer

CULTURAL DIVERSITY
young children's functional use of language within a work context is often observed in ? i put D. native american cultures

Chemistry
Look at the electron configurations for example One of the discontinuities happen from Be to B and the other from N to O In both these situations Be and N were in a stable position ( full orbital or half full orbitals) So they need more energy to go to next level therefore, ...

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