Sunday
December 11, 2016

Posts by Jenna

Total # Posts: 636

Math
From the roof of a building, the angle of elevation of the top of a taller building is 37 degrees. The angle of depression of the base of the building is 28 degrees. The buildings are 21 m a part. Determine the height of the taller building
November 28, 2016

university physics
two suitcases are on a 7.89 m high ramp to passengers waiting in a baggage terminal. The top suitcase is released from rest, and it slides down the ramp and hits the second suitcase. If the suitcase at the top has a mass of 16.6 kg and the other suitcase has a mass of 33.2 kg...
November 14, 2016

Physical chemistry
Find ?G and ?A for the freezing of 1.00 mol of H20 at 0°c and 1atm. At 0 ° C and 1 atm the density of ice and liquid water are 0.917 g / mL and 1 g / mL, respectively.
November 9, 2016

Math
51
November 3, 2016

Fractions
how many pizzas are required if mario eats 1/3 of a pizza, Luigi eats 3/5 of a pizza, and Bruno eats 1 1/4?
November 1, 2016

Calc
Use the limit process to find the area of the region between the graph of the function and the x-axis over the given interval. y = −4x + 6, [0, 1]
October 29, 2016

math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of 12 calculators is sent out containing 3 defective calculators and 9 working calculators. A customer buys 5 of these calculators ...
October 28, 2016

Spanish
Grammatically correct? Mi hermana es muy trabajadora? Correct <--- Incorrect Tengo un perro que esta muy tonto, siempre se quiere morder la cola. Correct Incorrect<--- Yo no estoy honesto: Correct Incorrect<----
October 27, 2016

math
Six people are asked to pick a number from 1 to 20. What is the probability that at least two people will pick the same number? Please help. Thanks
October 27, 2016

Calc
You plan to paint a sphere of radius 200 cm with a coat of pain .2 cm thick. Use differentials to approximate the amount of paint that is needed. Use the equation for the volume of a sphere.
October 26, 2016

Calc
Use differentials to approximate the value of the 4th root of 82 How do I even start?
October 25, 2016

math
How many paths spell STATISTICS using Pascal's triangle? S T T A A A T T T T I I I S S T I I C C C S S Thanks in advance
October 19, 2016

Math
Where do I insert the grouping symbols for 8+12+16÷4 = 15
October 18, 2016

English
We have covered short stories: Killings, The Destructors, The Step Not Taken, Identities, Story of an Hour and the movie, V for Vendetta. Question: In the literature we've covered, WHEN is more important than WHERE. Attack or defend this claim. Please help. Thanks in advance.
October 17, 2016

English
We have covered short stories: Killings, The Destructors, The Step Not Taken, Identities, Story of an Hour and the movie, V for Vendetta.
October 17, 2016

English
In the literature we've covered, WHEN is more important than WHERE. Attack or defend this claim. Please help. Thanks in advance
October 17, 2016

math
What are the similarities between organized counting and permutation? Explain using examples. I can only think of one similarity: they both use probability problems using counting P(event)= Number of favourable outcomes/Total number of possible outcomes. Thanks for your help.
October 15, 2016

math
How many ways can 9 people be arranged to sit at a round table if Sam can not sit between Ron and Ed? My solution: 7! Thanks for your help.
October 15, 2016

Math
60 ft/s+ ?mi/min
October 6, 2016

Math
Write three fractions that can be written as percents between 50% and 75%. Justify your solution Can you please help me????
September 28, 2016

Physics: Oscillations and spring constant
A student measured 15s for the 20 complete oscillations for an object of 200g attached at the free end of a spring. Calculate the period of oscillation (T) and the spring constant (k). My work (just wanted to ask for opinions if this is right): T = 2π√(m/k) T = 20 ...
June 26, 2016

English
help I need a book report on Anastasia. It needs six sentences pls help.
June 24, 2016

chemistry
The human body is said to contain approximately 50.0 grams of DNA in the entire body. If the number of nucleotides in ONE STRAND of DNA is approximately 3.0 x 106, and the average molar mass of a nucleotide is 327 g/mol, what is the average molar mass of an entire DNA double ...
May 18, 2016

chemistry
The total mass of DNA in the body is 50.0 g. If the number of nucleotides in ONE STRAND of DNA is approximately 3.0 x 106, and the average length of a single nucleotide is 0.34 nm, what is the length (in km) of one strand of DNA when it is stretched out to its maximum length (...
May 10, 2016

chemistry
If the average volume of all the blood in a human body is 4700 mL, what is the molarity of DNA in the human blood system?
May 10, 2016

chemistry
The human body is said to contain approximately 50.0 grams of DNA in the entire body. If the number of nucleotides in ONE STRAND of DNA is approximately 3.0 x 106, and the average molar mass of a nucleotide is 327 g/mol, what is the average molar mass of an entire DNA double ...
May 10, 2016

Math
hello, I'm trying to find the derivative of: y= 1+cos (x) / sin (x) thank you! :)
May 6, 2016

Calculus
Approximate the change in the lateral surface area(excluding the area of the base) of a right circular cone fixed height of h = 6m when its radius decreases from r=9m to r=8.9m (S=(pi)r sqrt(r^2+h^2)).
May 3, 2016

chemistry
A hot air balloon is filled with hot air and the hot air forces the volume of the balloon to expand until the density of the gas in the balloon is less than the density of the outside air. The volume must be 20% larger than the balloon would be at STP in order for the balloon ...
April 25, 2016

chemistry
A 100.0 mL sample of 0.300 M Ca(OH)2 is mixed with 100.0 mL of 0.700 M H3PO4 in a coffee cup calorimeter.If both solutions were initially at 35.0 °C and the resulting solution had a temperature that was recorded at 39. 7°C, determine the ΔHrxn in units of kJ/mol...
April 25, 2016

Math- I'd really appreciate it if you could help!!
Point $G$ is the midpoint of median $\overline{XM}$ of $\triangle XYZ$. Point $H$ is the midpoint of $\overline{XY}$, and point $T$ is the intersection of $\overline{HM}$ and $\overline{YG}$. Find the area of $\triangle MTG$ if $[XYZ] =150$.
April 21, 2016

Chemistry
How do you find the mass of iron in audio tapes per metre of tape?
April 11, 2016

civics
I would be able to check answers for you, but you have to fill out the blanks yourself.
April 6, 2016

college pre calculus
A kite frame is to be made from 6 pieces of wood. The four border pieces have been cut 5 and 12. The long center piece is 13. what should the length of the cross pieces be in order to maximize the area of the kite.
February 23, 2016

Math
To the nearest tenth, find the volume of a sphere with a diameter of 10 cm. Use 3.14 for Pi
February 16, 2016

Math
Solve the following equation with complex numbers and the quadratic formula : 7x^2-4x+2=0 My answer is 4+- 2i√10 ________ 14 My only question is Can this be reduced ?
February 8, 2016

Math
What is the smallest whole number divisible by both 17 and 8?
February 3, 2016

6th grade math
$3.05
February 3, 2016

Math
(8-x)/2=x-2 Solve for x I tried this equation and I cannot get the answer at all
February 3, 2016

Math (calculus )
I thought in the equation we would plug in what we know and then solve for t?
February 2, 2016

Math (calculus )
So would I be correct? v(t) =5200-t([5200-1100]/8)
February 2, 2016

Math (calculus )
Yes that is what I meant to type
February 2, 2016

Math (calculus )
A company buys an office machine for $5200 on January 1 of a given year. the machine is expected to last for eight years at the end of which time its trade in value or salvage value will be 1100$. if the company figures the decline in value to be the same each year than the ...
February 2, 2016

Math
A company buys an office machine for $5200 on January 1 of a given year. the machine is expected to last for eight years at the end of which time its trade in value or salvage value will be 1100$. if the company figures the decline in value to be the same each year than the ...
February 2, 2016

pre-calc college
a certain type of fencing comes in rigid 10 foot long sections. Four uncut segments are to be used to fence in a garden on the side of a building. what value of x will make the garden as large as possible?
January 31, 2016

Math
How do I work this out: beth took a math test and scored a 75. She took another math test and scored 20% higher. Whatis her scorefor the second test?
January 12, 2016

Math
Thanks so much :)
January 6, 2016

Math
The finale score In a soccer game is 4-3. How many different scores were possible at half time?
January 6, 2016

algebra
Sara goes on a slingshot ride in an amusement park. She is strapped into a spherical ball that has a radius of centimeters. What is the volume of air in the spherical ball?
January 5, 2016

Sign Language.
What is an adjective? A) a descriptive word used to modify a noun or pronoun B) a person, place or thing C) an action word D) all of the above
December 7, 2015

Sign Language??
I'm not sure on #1 and on #3. #2 is A. #4 is False.
December 3, 2015

physics
A fly of mass .2 g sits 12 cm from the center of a phonograph record revolving 331.3 rpm. a)What is the magnitude of the centripetal force on the fly?b)What is the minimum value of the coefficient of static friction between the fly and the record required to prevent the fly ...
November 9, 2015

Chemistry
Was it right?
October 25, 2015

science
A body has been found in a home with the thermostat set at 70 degrees Fahrenheit. The medical examiner measured the core body temperature to be 90.5 degrees. calculate the approximate time of death
October 22, 2015

Business Consulting, Intro to Computers
• Bill wants the entry in Column G to remind him of expenses that require receipts for the accountant. Tell Bill what to put in Column G to do this: a. Print the word “Yes” in any row where the total daily expenses are greater than or equal to $100.00. b. If the...
October 15, 2015

Physics/trig
A fire hose ejects a stream of water at an angle of 33.6 ° above the horizontal. The water leaves the nozzle with a speed of 29.6 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the highest possible fire?
October 9, 2015

math
7.88
September 21, 2015

Physical Science
It would have to use the equation Q=mTCP
September 14, 2015

Bio
A field mouse eats 10000 g of leaves each year, among other things. Of each gram of leaves has absorbed 150 kj of energy from the sun, about how much energy is available for the mouse?
September 12, 2015

chemistry
MasteringChemistry said the correct answer is 4.26×10^4 g
September 8, 2015

Physics/trig
During takeoff, an airplane climbs with a speed of 300 m/s at an angle of 36 degrees above the horizontal. The speed and direction of the airplane constitute a vector quantity known as the velocity. The sun is shining directly overhead. How fast is the shadow of the plane ...
September 3, 2015

Physics PLEASE HELP!
A bullet whose mass is 1.0 x 10-3 kg leaves a 5.0 kg rifle with a muzzle velocity of 1.0 x 103 m/s. It strikes a stationary block of wood whose mass is 1.0 kg and remains embedded in it. The kinetic energy of the bullet as it travels towards the wooden block is?
August 17, 2015

Physics
A 1386 kg car traveling at 61 km/h is brought to a stop while skidding 42 m. What is the work done on the car by the frictional forces? (Use formula: v2 = vo2 + 2ad)
August 17, 2015

Physics
What is the change in velocity (in m/s) if an impulse of 225 N acts on a 4.5 kg mass for 3.0 s?
August 16, 2015

Physics
A force of 12.0 N acts for 3.7 s on mass M. What impulse (in N*s) is given to the mass?
August 16, 2015

Physics
A 50.0 g bullet strikes a 7.00 kg stationary wooden block. If the bullet becomes embedded in the block, and the block with the embedded bullet moves off at a velocity of 5.00 m/s, what was the initial velocity of the bullet?
August 16, 2015

Scrambled Paragraph
I wanted to see if I got it right or wrong.
August 7, 2015

Scrambled Paragraph
Ugh! That means I failed the test! 😢
August 7, 2015

Scrambled Paragraph
Architects must consider many factors in designing a building. _1_ Q. Lighting is an essential aesthetic consideration in the design of a building's interior. _4_ R. It's source of daylight, high overhead and filtered through stained glass, creates exciting patterns of...
August 7, 2015

Logical Reasoning
During the spring, Jim mows his lawn twice per week. During the summer, Jim mows his lawn once per week. A) Jim's lawn grows faster in the summer than in the spring. B) Jim bought a new lawn mower just before summer. C) it is important to Jim to keep his lawn trimmed. D) ...
August 6, 2015

Logical reasoning
On her way to work today, Wendy paid one dollar more to fill her car's gas tank than she paid one week ago to fill the same tank. A) Wendy's car is leaking gasoline. B) The price of gasoline has gone down. C) Wendy needs her car for transportation. D) Wendy took a trip...
August 6, 2015

Logical Reasoning
Yea A is supposed to say Rick Spencer is the star of the movie.
August 6, 2015

Logical Reasoning
A new movie now playing in theaters is based on an old television series. Rick Spencer appears in the movie but did not appear in the television show. A) Rick Spencer is the date of the movie. B) The television show is popular today. C) The television show was cancelled. D) ...
August 6, 2015

Logical Reasoning
Is it D?
August 6, 2015

Logical Reasoning
No house lights on this side of the street is on. At every house across the street, at least one light is on. A) Residents on this side of the street are trying to save energy. B) Residents across the street have not turned off their lights. C) It is the middle of the night. D...
August 6, 2015

Math
There is a right triangle named ABC. If AB=2 yards and BC=6 yards, what is the perimeter of triangle ABC? A) 4*square root of 2 yards B) 8 yards C) 8 + 2*square root of 10 D) 8 + 2*square root of 14 E) 28 yards
August 6, 2015

Math
What is the fewest number of 7's that can be added together to make their sum greater than 4000? A) 4001 B) 572 C) 571 D) 470
August 6, 2015

Math
In triangle ABC, the measure of angle A is 80 degrees and the measure of angle B is 50 degrees. If the length of AB is 2x - 12 and the length of AC is x - 3, what is the length of AB? A) 15 B) 12 C) 9 D) 6 E) 3
August 6, 2015

Vocabulary
"Higher forms of animal life have a variety of systems within their bodies that are used for special functions: a circulatory system for he blood; the food supplier; a digestive system for converting food into energy and body tissue; and others. The definition that ...
August 5, 2015

Vocabulary
"The Court and its area of control, its jurisdiction, are established in Article III of the Constitution." The word "jurisdiction" means A) the limits within which authority may be exercised B) personnel C) branches throughout the country D) special ...
August 5, 2015

Math
5 days
August 5, 2015

Math
The number of seconds in 2 hours equals the number of minutes in how many days?
August 5, 2015

Math
So it's 6?
August 5, 2015

Math
I see 12
August 5, 2015

Math
How many pairs of parallel edges does a rectangular solid have?
August 5, 2015

Math
Is it 16 + 2(pi)
August 5, 2015

Math
A circular pizza of radius 8 is cut into 8 equal slices. What is the perimeter of one slice?
August 5, 2015

math
No. So the answer is B?
August 5, 2015

math
Which of the following is not a true fact about angles? A) The measure of an angle depends on the amount of rotation. B) Angles depend on the length of the rays that form the angle. C) All right angles are equal in measure. D) All straight angles are equal in measure. Is it A?
August 5, 2015

university of phoenix
Suppose y is directly proportional to x and that y = 40 when x=5. Complete parts (a)and(b). Find the constant of proportional k. k= (b)use y=ky to find y when x=9 y=
August 1, 2015

Math
45
July 7, 2015

math
The mean salary of 5 employees is $34600. The median is $35700. The mode is $3700. If the highest paid employee gets a $3900 raise, then what is the new mean, median and mode?
June 13, 2015

chemistry
how to prepare 500ml of a 0.75M Sodium Phosphate buffer solution at pH 7.5, how would you go about doing that?
May 18, 2015

theory of evolution
MissSmarties, maybe we don't like to learn unnessecary shii like this. Adults need to wake up and realize they are brainwashing us.
May 18, 2015

social studies
How did abolitionists like Channing justify taking no immediate action against slavery? Please help Miss Sue
May 17, 2015

social studies
What was the most radical approach to abolition? And was this approach put into action?
May 17, 2015

social studies
What was the most radical approach to abolition? Was this approach put into action?
May 17, 2015

social studies
How did abolitionists like Channing justify taking no immediate action against slavery
May 17, 2015

Physics
idk i have the same question
April 30, 2015

math please help
Medians line AX and line BY of triangle ABC are perpendicular at point G. Prove that AB = CG. In your diagram, <AGB should appear to be a right angle. Not sure what i need to do for this...
April 23, 2015

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