# Jenna

Newest questions and responses by Jenna-
## Precalculus

Hello, I have a question here that reads: If angle theta lies in quadrant iii & costheta= -2/root29 then determine the exact values of the other 2 trig ratios. When I take cos-1 of the above I get 111 degrees which would be in quadrant 2... Is that a

*asked on January 18, 2019* -
## Physics

Hi, A squash ball of mass 0.035 kg hits the wall at speed of 78 m/s and rebounds straight back at 61 m/s. The ball is in contact with the wall for 0.44 s. a) What is the original momentum of the squash ball? 2.73 kg-m/s b) Calculate the impulse imparted to

*asked on January 13, 2019* -
## Physics

Hello, A soccer player kicks a ball straight up in the air at 18 m/s. What is the balls total hang time? 3.68 s What is the maximum height reached by the ball? 16.53 m When is the ball 12 m above the ground? Vavg = (v+vnaught)/2 Vavg= (18+0)/2 Vavg=9m/s

*asked on January 12, 2019* -
## Science

A biologist is constructing a battle graph to show the evolutionary relationships between the animals shown below. If anatomical features are used to constrays rhebcladogram, which animal will be placed farther from the animal shown. The animal shown is a

*asked on January 11, 2019* -
## Calculus 1

(1 point) Write an expression for the function, f(x), with the properties. f′(x)=(ln(x)2)/x and f(3)=7. f(x)=∫t=b t=a

*asked on December 5, 2018* -
## Economics

The elasticity of the demand for labor in the Western Europe and Nordic countries is between -0.3 and -0.45. However, in Eastern European countries it is greater than -0.9. Why might this be the case? Suggest two reasons for the higher elasticity.

*asked on November 27, 2018* -
## Calculus 1

Find the positive critical point of the function f(x)=x/(x^6+9)

*asked on November 14, 2018* -
## Asoka rule

What are stupas How did asokas rule lead to a prosperous India How did Asoka do after the war with Kalinga

*asked on October 24, 2018* -
## Science

Assume that you have a cell that has a Zn^2+ concentration of 0.0335M and Ag^+ concentration of 0.0012M. The cell temperature is 35.0 degrees Celsius. Find the cell potential and give the cell notation of the cell.

*asked on September 15, 2018* -
## Math

Write an expression to represent 4 more than the product of 3 and a number X

*asked on August 30, 2018* -
## math

in the town hall meeting room, i sit in the fourth row from the front, whcih is also the twelfth row from the back. each row has 14 seats. how many people can be seated in the meeting room? is it 14*15 ?

*asked on August 14, 2018* -
## math

the SMALLEST of 3 consecutive numbers is n. the average of these 3 numbers is: a. (n+2)/3 b. n+1 c. 3(n+1)/2 d. 3n/3 is b the correct answer ?

*asked on August 10, 2018* -
## Introduction to computers

Discuss the uses of technology in society

*asked on May 26, 2018* -
## math

Find the amount paid for the loan $1500 at 9% for 2 years

*asked on March 27, 2018* -
## Math

A rectangular table is twice as long as it is wide. What is the perimeter of a table if it measures 1.5ft by 3ft ?

*asked on January 27, 2018* -
## Biology

A heterozygous brown mouse is crossed with a homozygous white mouse. What are the genotypes and phenotypes of the offspring? If these mice had 3 offspring, what is the probability that all 3 would be white?

*asked on January 22, 2018* -
## physical science

when a physical change in a sample occurs which of the following does not change? a. shape b. temperature c. volume d. composition d?

*asked on December 8, 2017* -
## physical science

which of the following are pure substances? a. solutions b. compounds c. homogeneous mixtures d. colloids A?

*asked on December 8, 2017* -
## Math

What is the square route of 24

*asked on November 6, 2017* -
## algra

Determine the ordered pair that satisfies the equation, -5x - 6y = -8.

*asked on August 24, 2017* -
## physics

A person standing on a vertical cliff a height h above the lake wants to jump into the lake but notices a rock just at the surface level with its furthest edge a distance s from the shore .The person realizes that with a running start it will be possible

*asked on June 14, 2017* -
## Chemistry

The oxidation of iodide ions by arsenic acid in acidic aqueous solution occurs according to the net reaction H3AsO4 + 3I – + 2 H3O +→ H3AsO3 + I3– + H2O. The experimental rate law for this reaction is Rate = k [H3AsO4] [I–] [H3O+]. According to the

*asked on April 22, 2017* -
## History

What does the phrase "without transcending its authority" suggest about Jackson? Jackson is concerned about abusing the power he has been given. Jackson wants to unite the states but does not have enough control of Congress. Jackson feels the Congress has

*asked on April 11, 2017* -
## statistics

The Information Systems Audit and Control Association surveyed office workers to learn about the anticipated usage of office computers for personal holiday shopping. Assume that the number of hours a worker spends doing holiday shopping on an office

*asked on April 4, 2017* -
## History

What union is it ? This union accepted skilled as well as unskilled workers, blacks as well as whites, and men as well as women. As a result, its membership grew quite rapidly.

*asked on January 6, 2017* -
## math

The number of immigrants living in a certain country with a large population makes up 35% of the population. In a random sample poll of 40 people what is: a)the expected number of non-immigrants will be polled? b)the probability that no immigrants will be

*asked on December 21, 2016* -
## math

It is known that approximately 20% of the population is colour blind. In a sample of 270 people, use the normal approximation to find probability that: a)at least 90 people are colour blind b)exactly 50 people are colour blind I already posted this

*asked on December 21, 2016* -
## math

In the spring, a group of biologists caught and tagged 500 wolves in a wilderness area. These animals were then released. A couple of months later, 200 wolves were caught and 75 of them had tags. Estimate the wolf population in this wilderness area. Please

*asked on December 21, 2016* -
## data management gr.12

In the spring, a group of biologists caught and tagged 500 wolves in a wilderness area. These animals were then released. A couple of months later, 200 wolves were caught and 75 of them had tags. Estimate the wolf population in this wilderness area. Please

*asked on December 21, 2016* -
## data management gr.12

In a bag there are 8 red jelly beans and 7 green jelly beans. The 4 jelly beans are randomly chosen from the bag without replacement. a)create a probability distribution table for choosing red jelly beans b)what is the probability that at least 2 chosen

*asked on December 21, 2016* -
## data management gr.12

It is known that approximately 20% of the population is colour blind. In a sample of 270 people, use the normal approximation to find probability that: a)at least 90 people are colour blind b)exactly 50 people are colour blind Thanks

*asked on December 21, 2016* -
## math

It is known that approximately 20% of the population is colour blind. In a sample of 270 people, use the normal approximation to find probability that: a)at least 90 people are colour blind b)exactly 50 people are colour blind Thanks

*asked on December 20, 2016* -
## math

In a bag there are 8 red jelly beans and 7 green jelly beans. The 4 jelly beans are randomly chosen from the bag without replacement. a)create a probability distribution table for choosing red jelly beans b)what is the probability that at least 2 chosen

*asked on December 20, 2016* -
## math

A game is defined by the rules that two dice are rolled and the player wins varying amounts depending on the sum of the two dice rolled based on the following table: Sum 2 3 4 5 6 7 8 9 10 11 12 Winnings $10 $9 $8 $7 $6 $5

*asked on December 20, 2016* -
## data management gr.12

There is a new water park in your neighbourhood. A rider is not allowed to get on the slide at the top until the previous rider has comletely exited at the bottom. It is known that the mean ride time for this type of slide is 24.5 s and the standard

*asked on December 20, 2016* -
## data management gr.12

Tests show that the pressure, in pounds per square inch (Psi) required to break skate boards is normally distributed with a mean of 54.7 and standard deviation of 6.2 a)what is the probability that a board will require at least a pressure of 70 to break?

*asked on December 20, 2016* -
## data management gr.12

In a bag there are 8 red jelly beans and 7 green jelly beans. The 4 jelly beans are randomly chosen from the bag without replacement. a)create a probability distribution table for choosing red jelly beans b)what is the probability that at least 2 chosen

*asked on December 20, 2016* -
## 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

*asked on 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

*asked on November 15, 2016* -
## Physical chemistry

Find ΔG and ΔA 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.

*asked on November 10, 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?

*asked on 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]

*asked on October 30, 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

*asked on October 28, 2016* -
## Spanish

Grammatically correct? Mi hermana es muy trabajadora? Correct

*asked on October 28, 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

*asked on 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.

*asked on October 26, 2016* -
## Calc

Use differentials to approximate the value of the 4th root of 82 How do I even start?

*asked on October 26, 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

*asked on October 19, 2016* -
## Math

Where do I insert the grouping symbols for 8+12+16÷4 = 15

*asked on 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

*asked on 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

*asked on 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.

*asked on 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.

*asked on October 15, 2016* -
## Math

60 ft/s+ ?mi/min

*asked on 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????

*asked on 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 =

*asked on June 26, 2016* -
## English

help I need a book report on Anastasia. It needs six sentences pls help.

*asked on 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

*asked on 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

*asked on 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?

*asked on 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

*asked on May 10, 2016* -
## Math

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

*asked on 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)).

*asked on 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

*asked on April 26, 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

*asked on 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 $[XYZ] =150$.

*asked on April 22, 2016* -
## Chemistry

How do you find the mass of iron in audio tapes per metre of tape?

*asked on April 11, 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.

*asked on February 24, 2016* -
## Math

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

*asked on February 17, 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 ?

*asked on February 9, 2016* -
## Math

What is the smallest whole number divisible by both 17 and 8?

*asked on February 4, 2016* -
## Math

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

*asked on February 3, 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

*asked on February 3, 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

*asked on February 3, 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?

*asked on February 1, 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?

*asked on January 12, 2016* -
## Math

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

*asked on January 7, 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?

*asked on January 5, 2016* -
## 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

*asked on November 10, 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

*asked on 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

*asked on October 9, 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?

*asked on September 12, 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

*asked on September 4, 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

*asked on August 18, 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)

*asked on 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?

*asked on August 17, 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?

*asked on August 17, 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?

*asked on August 17, 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

*asked on August 8, 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

*asked on August 7, 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)

*asked on August 7, 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

*asked on August 7, 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

*asked on 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

*asked on 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

*asked on 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

*asked on 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

*asked on August 6, 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

*asked on August 6, 2015* -
## Math

The number of seconds in 2 hours equals the number of minutes in how many days?

*asked on August 6, 2015* -
## Math

How many pairs of parallel edges does a rectangular solid have?

*asked on August 5, 2015*