# Jonathan

Popular questions and responses by Jonathan-
## life orientation

Define risk behavior and explain why it is important for teenagers to investigate and be knowledgeable about it.

*asked on August 21, 2015* -
## mathematics

two observer p and r 15 meters apart observes a plane in the same vertical plane and from the same side of the kite,the angles of elevatio of the plane from p and r are 30 60 respectively.find the height of the plane to the nearest meter.

*asked on July 29, 2020* -
## physics please help

A golfer, driving a golf ball off the tee, gives the ball a velocity of +40 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 4.05E-3s. (a) What is the change in momentum of the ball? (b) Determine the average

*asked on November 5, 2010* -
## trig

Two ships, one sailing at 30 km/hr and the other at 45 km/hr, left port at the same time. Three hours later they were 120 km apart. If you had to find the angle between their courses an equation that could be used to solve this problem is:

*asked on February 24, 2008* -
## Physics

a stone is projected at an angle of 60 degree and an initial velocity of 20 m/s .determine the time of flight

*asked on October 27, 2019* -
## Geometry

10. Which of the following quadrilaterals always have diagonals that are congruent. Circle all that apply Parallelograms Rectangles Rhombi Squares Isosceles trapezoids 19. Given square ABCD: if the measure of angle ACB = (1x - 32) degrees, find the value

*asked on February 7, 2018* -
## Geometry

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 21, 2016* -
## Physics

Two perpendicular forces have a resultant of 13N.if one of the forces is 5N, the other force is?

*asked on March 11, 2017* -
## Calculus

The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in feet. What is the average velocity of the particle for 1 ≤ t ≤ e? a)1 b)e c)e-1 d)1/(e-1)

*asked on November 29, 2016* -
## Organic Chemistry

What is the white solid that quickly forms when the methyl salicylate is added to the sodium hydroxide solution? I know that it is this equation but I wanted to know what is the name of the white solid: HOC6H4COOCH3 + NaOH „³ HOC6H4COO- Na+ + CH3OH

*asked on April 3, 2010* -
## Geometry

A photographer enlarged a picture. If the width of the image is 5 inches and the width of the pre-image was x, what is the scale factor for the dilation in terms of x?

*asked on January 5, 2016* -
## Maths

if COS A=3/5 and Sin B=7/25, when A us acute and B is obtuse, find without using tables. the value of COS(A+B)

*asked on January 7, 2020* -
## Math

A spinner is divided into 8 equal sections. Each section is numbered 1-8. Find each probability for one spin.

*asked on January 19, 2017* -
## Science

1. Aquaculture is the practice of farming sea organisms as a renewable food source. A. True B. False. 2. Selectively cutting down trees on an area of land can be best described as A. cutting down certain trees while leaving other trees standing B. cutting

*asked on February 3, 2014* -
## Math

In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

*asked on March 6, 2018* -
## Calculus

The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 60t − 1.5t^2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? a)60

*asked on November 29, 2016* -
## lively

Suppose that four times the square of a number equals 20 times that number. Whatis the number? It'll take you 45 seconds if you just plug in a few numbers Again -- putting the subject in the subject line helps. =) 4 n^2 = 20n zero is one solution. Solve

*asked on November 26, 2006* -
## Chemistry

What is the balanced equation between mannitol and boric acid

*asked on October 2, 2019* -
## maths

express log9 in terms of log3 x and log3 y and solve for x and y simultaneously

*asked on January 21, 2017* -
## English Check

The advice was meant for ____ A)you and i B)she and i C) you and me Hello i need help. My original answer was A)you and I. But then I started reading a book on English grammar and it says it should be C)she and I since they are subject pronouns.

*asked on September 1, 2016* -
## Help with science

1. Aquaculture is the practice of farming sea organisms as a renewable food source. A. True B. False. 2. Selectively cutting down trees on an area of land can be best described as A. cutting down certain trees while leaving other trees standing B. cutting

*asked on February 3, 2014* -
## US History

Why Is Alfred T Mahan Important To Us Today?

*asked on October 4, 2012* -
## Statistics

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Student's grades - A, B, or C, on a test.

*asked on June 26, 2011* -
## math question corrected

a farmer bought chickens, goats and sheep. the cost of a chicken is .50 goat is $3.50 and sheep is $10 He bought 100 animals and spent $100. how many of each animal did he buy please help! I need this for school tomorrow Since you have two equations and

*asked on August 18, 2005* -
## Chemistry

What's the resulting solution if 2000cm3 of 1MH2S04 is mixed with 20cm3 of 1M NaOH? i got 0.5M,acidic in concentration.

*asked on March 10, 2017* -
## Math

In lowest gear on a 10-speed bike, each turn of the pedals makes the wheels turn 3.4 times. In the highest gear, each turn of the pedals makes the wheels turn 1.8 times. With each turn of the wheels, the bike travels 6.5 feet. How much farther does the

*asked on September 24, 2012* -
## Calculus

Sketch a possible graph for a function that has the following characteristics. f(0)=2.5 -horizontal asymptote is y=3 -Vertical x=4 -f'(x)0 for x>4. -f'(x)

*asked on March 2, 2012* -
## physics

To enter the main pool at an amusement part, a swimmer uses a water slide which has a vertical height of 2.65 m. Find her speed at the bottom of the slide if she starts with an initial speed of 0.950 m/s.

*asked on November 10, 2011* -
## physics

A putting green is located 240ft horizontally and 64ft vertically from the tee. What must be the magnitude and direction of the initial velocity if a ball is to strike the green at this location after a time of 4 seconds?

*asked on January 27, 2011* -
## Geometry

D is between C and E. CE=6x, CD=4x+8, DE=27. Find CE

*asked on November 5, 2010* -
## Physical Science

If 30 N of force is exerted over an area of 20 m2, how much pressure is being applied in pascals?

*asked on May 31, 2010* -
## Math - Pre- Clac

Prove that each of these equations is an identity. A) (1 + sinx + cos x)/(1 + sinx + cosx)=(1 + cosx)/sinx B) (1 + sinx + cosx)/(1 - sinx + cosx)= (1 + sin x)/cosx Please and thankyou!

*asked on December 14, 2009* -
## Trig word problem

A park ranger at point A sights a redwood tree at point B at an angle 23 degrees from a fire tower at point C, From the fire tower, the Angle between the ranger and the tree is 123 degrees. If the ranger at point A is 2.3 miles from the fire tower at point

*asked on February 24, 2008* -
## Algebra II

Solve x^2+2x=-2 by graphing and indicate the roots.Please and thank you We can't draw graphs for you here. The roots are x = -2.73 and -0.73 I suggest you make your own graph of y = x^2 + 2x and see where it crosses the horizontal line y = -2. Choose x

*asked on August 8, 2007* -
## math

a farmer bought chickens, goats and sheep. He bought 100 animals and spent $100. how many of each animal did he buy If this is an algebra problem, you need to know the cost of each animal. There is not enough information. sorry, the cost of a chicken is

*asked on August 18, 2005* -
## Algebra

In a rectangular room 10 feet wide, 40 feet long and 15 feet high there are four windows, each 30 inches by 48 inches. What is the ratio of window surface to floor area in this room?

*asked on May 7, 2020* -
## math

The scale of two similar triangles is 1:4. The perimeter of the smaller triangle is 60 centimeters. What is the perimeter of the larger triangle?

*asked on March 15, 2020* -
## Biology

Based on current evidence, what process most accurately describes how chloroplasts and mitochondria evolved? a.photophosphorylation b.endosymbiosis c.photosynthesis d.cellular respiration I personally think the answer is d.

*asked on March 5, 2019* -
## social studies

Which of these were holy Hindu scriptures written by gurus to help connect people to heavenly forces?

*asked on November 4, 2018* -
## Using Geometry in Probability

Allen and Bethany each arrive at a party at a random time between 1:00 and 2:00. Each stays for 15 minutes, then leaves. What is the probability that Allen and Bethany see each other at the party?

*asked on July 6, 2018* -
## Health

How might a forest fire affect the health of people in nearby communities? (Select all that apply.) a. increased risks of asthma attacks b. increased risks of viral infections c. increased risks of bacterial infections d. increased risks of heart problems

*asked on May 14, 2018* -
## Health

Why are routine screenings for cervical cancer important? (Select all that apply.) a. Cervical cancer screenings guarantee a longer life. b. Cervical cancer screenings can identify precancerous cells. c. They can identify cancer cells before symptoms

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

Find the area of the rhombus. Round to the nearest tenth if necessary. M(0,4), N(3,0), P(0,-3), Q(-3,0)

*asked on April 4, 2018* -
## math

Given the coordinates of the vertices of a quadrilateral, determine whether it is a square, a rectangle or a parallelogram. Then find the area of the quadrilateral. E(–7, –1), F(2, –1), G(–4, –8), H(5, –8)

*asked on April 4, 2018* -
## Biology

What's the largest and most successful kingdom in the animal kingdom?

*asked on March 11, 2017* -
## 10th Grade Math

A history class is comprised of 6 female and 9 male students. If the instructor of the class randomly chooses 5 students from the class for an oral exam, what is the probability that 2 female students and 3 male students will be selected? Round your answer

*asked on August 30, 2016* -
## pre calc

5x+3yi=5-6i?

*asked on July 31, 2016* -
## chemistry

what volume of glycerine C3H8O3, with a density of 1.26 g/mL should be taken to obtain 2.50 ml of glycerine?

*asked on April 17, 2016* -
## maths

4x+16y:32 and 4x+y:17

*asked on February 13, 2016* -
## physics

A capacitor,consisting of two metal plates each of area 50cm2 and space 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored..(2)the electric flux density and the potential gradient..

*asked on February 13, 2016* -
## Calculus

Givenƒ(x) = ex, verify that lim h->0 (e^x+h - e^h)/h + e^x and explain how this illustrates that ƒ′(x) = ln e • ƒ(x) = ƒ(x)

*asked on July 22, 2015* -
## chemistry

Determine the limiting reactant for this reaction if 3.027 grams of Aluminum are reacted with 60.00 mL of a solution that is 6 M KOH. Determine the amount of KAl(SO4)2•12 H2O that can be produced from this reaction. Molar mass Alum = 474 g/mol 2 Al (s) +

*asked on March 29, 2015* -
## Probability

Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p, where 0

*asked on March 3, 2015* -
## math

Michaela makes original stationary to give away as gifts. She likes to put a small bow in the corner of each card. She purchased a piece of ribbon that was 3 1/4 ft long. She can make each bow out of 1/3 ft of ribbon. Which equation would be used to show

*asked on January 16, 2015* -
## Calculus

A 13 foot ladder is leaning against the house when it's base starts to slide away. By the time is 12 feet from the house the base is moving at the rate of 5 ft/sec. 1.How fast is the top of the ladder sliding down the wall at that moment? 2. At what rate

*asked on October 16, 2014* -
## Physics

A 2050 kg truck is traveling east through an intersection at 2.3 m/s when it is hit simultaneously from the side and the rear. (Some people have all the luck!) One car is a 1200 kg compact traveling north at 4.5 m/s. The other is a 1600 kg midsize

*asked on March 8, 2014* -
## math

The graph shows the cost C in dollars to rent a car for one day as a function of the number m of miles driven. Which of the following functions models the situation?

*asked on December 1, 2012* -
## Us History

In need of help, Who Did Alfred T Mahan Look Up To As A Child?

*asked on October 4, 2012* -
## Physics

Electrical conductivity in liquid solutions depends on the presence of free 1) neutrons 2) protons 3) molecules 4) ions explain please I really don't understand this question

*asked on March 7, 2012* -
## U.S History

Why was there an Agricultural boom during WW1? Why did the boom come to an end?

*asked on March 7, 2012* -
## physics

wo packages at UPS start sliding down the ramp shown in the figure. Package A has a mass of 4.50 and a coefficient of kinetic friction of 0.190. Package B has a mass of 10.5 and a coefficient of kinetic friction of 0.170.

*asked on February 20, 2012* -
## Korean

how do you say merry christmas in korean?

*asked on December 6, 2011* -
## STATS

Scientists wish to test the mind-readiing ability of a person who claims to have ESP. They use five cards with different and distinctive symbols( square, cicrle, triangle, line, squiggle). Someone picks a card at random and thinks about the symbol. The

*asked on October 17, 2011* -
## Pre-Calc-Please check I'm desperate

Please check my answers I really need to do my homeowrk!;This are polar coordinates we're studying-I'm almost positive the first two are correct. 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this

*asked on September 27, 2011* -
## MATHS

A ROOM WALL MEASUREMENT IS LENGTH 54FT,HEIGHT 11FT.HOW MANY SQUARE METERS OF TILES WILL COVER THE WALL? THE TILES SIZE IS 8/12CM .

*asked on May 4, 2011* -
## Chemistry

Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6Cl2(g) ! 4 PCl3(g) . A sample of PCl3 ofmass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the percentage

*asked on March 23, 2011* -
## Physics

A child rides a toboggan down a hill that descends at an angle of 11.5 degrees to the horizontal. The hill is 36.6 m long. What is the horizontal component of the child’s displacement? Answer in units of m. What is the vertical component of the child’s

*asked on March 16, 2011* -
## stoichiometry

Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25 moles of oxygen gas react

*asked on February 9, 2011* -
## Math

I am working with bases. I don't understand. What, if anything, is wrong with the following numerals? A. 306four B. 1023two

*asked on January 20, 2011* -
## physics

A daredevil jumps a canyon 10.6 m wide. To do so, he drives a car up a 19° incline. (The daredevil lands on the other side of the canyon at the same elevation as takeoff.) What minimum speed must he achieve to clear the canyon?

*asked on October 21, 2010* -
## SCIENCE

SUNLIGHT AND WIND ARE INEXHAUSTIBLE RESOURCES. EXPLAIN WHY THEY ARENT USED TO PRODUCED ALL OF OUR ENGERY

*asked on April 21, 2010* -
## Government.

The main reason why the Constitution dealt specifically with the crime of treason was that: A. The framers wanted to prevent all treason in order to protect the democracy. B. Treason was not considered a serious crime before the Constitution was written.

*asked on April 21, 2009* -
## Maths

if cosA = 4/5; sin

*asked on April 17, 2008* -
## Chemistry

The nuclide 12 N 7 is unstable. What type of radioactive decay would be expected??? my guess is either gamma or beta. are either of those correct?

*asked on March 4, 2008* -
## Chemistry

HELP! we just started kinetics and i have no clue how to solve this problem. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737

*asked on February 20, 2008* -
## Physics

The 2-cm (radius) current loop shown in the figure is changing from Î¸1 = 11 degrees to Î¸2 = 66 degrees in a magnetic field 2 T in 0.5 seconds. What is the magnitude of the induced emf to the nearest hundredth of a millivolt? The wire in Problem 2 has

*asked on March 27, 2007* -
## Japan

social studies) Question:How many distance is Japan from the US? It is 6760 from New York Ciy to Tokyo It is 4791 miles from Seattle to Tokyo It is 3862 miles from Honolulu to Tokyo It is 2444 miles from Anchorage to Sapporo Take your pick The last entry

*asked on January 22, 2007* -
## Algebra

From fours cans with 96 bolts in each 3/4 of the bolts In one can are used, as are 5/8 of the bolts in the second can are used, 1/2 of the bolts in a third can, and 1/4 in the remaining can. What is the fraction in the total number of bolts remaining in

*asked on May 8, 2020* -
## Algebra

The average number of bends which an electrician can finish per hour on a defective conduit bender is 2/3 the number that can be finished per hour on a bender in good repair. If it requires 45 minutes to bend 9 conduits with a defective bender, how many

*asked on May 6, 2020* -
## Physics

Two point charges of equal magnitude repel each other with a force of 5.49 Newtons when separated by 15.1 cm. Find the magnitude of the charge (in Coulombs).

*asked on March 13, 2020* -
## Physics

A force of 0.460 N exists between a positive charge of 8.50 10-6 C and a negative charge of -3.22 10-6 C. What distance separates the charges?

*asked on March 13, 2020* -
## Math

Maribeth works in a dog rescue centre. At feeding time, 5 of the dogs each get 3/4 kg of food and 3 dogs each get 3/5 kg of food. How much food does Maribeth feed to the dogs?

*asked on February 3, 2020* -
## Programming

In HTML, we can include any Unicode characters. All special characters in HTML are specified in the form: &spec; These special characters all start with the ampersand and end with a semicolon. How would you specify the symbols ¬ , ∨ , and ∧ in HTML?

*asked on January 29, 2020* -
## Math

What colors are specified by these hexadecimal values? How many bits are assigned to each color? What is the range of values for each of the primary colors used on web pages?

*asked on January 29, 2020* -
## Math

How many hexadecimal digits are used to specify a color in a web page?

*asked on January 29, 2020* -
## Physics

While decorating her apartment, Julie pushes a 608-N dresser across the floor by applying a 578-N horizontal force. The coefficient of friction between the dresser and the floor is 0.745. Determine the magnitude of the acceleration (in m/s/s) of the

*asked on January 11, 2020* -
## Physics

Block B is on a resistance-free surface and a horizontal force of 4.54 N acts on the block. This force produces an acceleration of 2.44 m/s/s. Block A, which has a mass of 4.38 kg, is then dropped onto Block B as shown in the "after" picture. The same

*asked on January 10, 2020* -
## World History

The death of Charlemagne and decline of his empire led to this system becoming a widespread solution to a lack of central authority. A) Feudalism B) Communism C) Confucianism D) Anarchism

*asked on December 19, 2019* -
## music

what do neumes above text represent?

*asked on May 31, 2019* -
## Algebra

-2y + 6x + 2 = 0 y= -4 - 2x

*asked on November 12, 2018* -
## Math

I need help on a quiz it is called mid unit review for 7th grade

*asked on September 20, 2018* -
## physics

A force F applied to an object of mass m causes it to move in a straight line a distance D during an interval of time T. The object gains kinetic energy K during this interval. In which of the following cases will the object gain the same kinetic energy K?

*asked on May 21, 2018* -
## Calculus

Find d/dt integral[2 to x^2](e^x^3)dx

*asked on May 16, 2018* -
## Statistics

What is a diagram that shows the frequency of data on a number line. I honestly don't know.

*asked on April 9, 2018* -
## math

Find the area of the figure. Round to the nearest tenth if necessary. L(3,6), M(7,3), N(6,-1), J(2,-1), K(3,3)

*asked on April 5, 2018* -
## Math

Solve the equation. 100^(5x+2)=1000^(4x-1)

*asked on March 14, 2018* -
## Geometry

10. Which of the following quadrilaterals always have diagonals that are congruent. Circle all that apply Parallelograms Rectangles Rhombi Squares Isosceles trapezoids 19. Given square ABCD: if the measure of angle ACB = (1x - 32) degrees, find the value

*asked on February 6, 2018* -
## PAVCS

How many moles of gas are in a 20 liter scuba canister is 300k and pressure is 200 atm

*asked on January 26, 2018* -
## Social Studies

1. In the AD 600s, North africa was conquered by A. Egyptians B. Arab Muslims C. Europeans D. Africans from south of the Sahara

*asked on November 1, 2017* -
## Physics

a golf ball is shot from a tee which is located 18.0m above the green. The initial velocity of the golf ball is 42.0 m/s at an angle of 50.0 degrees above the horizontal. The ball behaves as an ideal projectile during its flight from the tee to the

*asked on October 16, 2017*