# Ruth

Popular questions and responses by Ruth-
## Pre calc

evaluate the expression under the given conditions. cos(θ − ϕ); cos(θ) = 5/13, θ in Quadrant IV, tan(ϕ) = − square root15,ϕ in Quadrant II Anyone know how to do this I have never been this confused in my life

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

Two boats A and B left a port C at the same time on different route .B travelled on a bearing of 150 degree and A travelled 8km and B had travelled 10km ,the distance between the Two boats was found to be 12km .calculate the bearing of A's route from C.

*asked on June 13, 2017* -
## maths

Three bags of wheat,two bags of corn, and one bag of oats weigh the same as one bag of wheat,one bag of corn and five bags of oats,if two bags of corn and one bag of oats weights 25 pounds and one bags of corn weights 10 pounds,How much does one bag of

*asked on October 8, 2016* -
## chemistry

What separatation method used to separate silver chloride (solid))and sodium trioxonitrate

*asked on January 12, 2018* -
## physics

an electron moves in the plane of paper toward the top of the page .a magnetic field is also in the plane of the page and directed toward the right .what is the direction of the magnetic force on the electron ?

*asked on March 10, 2016* -
## Chemisty

How do i convert 0.0024 to scientific notation

*asked on January 11, 2010* -
## writing

Doctors in the field of preventive medicine concentrate on "preventing disease and to encourage" good health practices. Best way to write the portion? 1) preventing disease and to encourage 2)prevent disease and to encourage 3)to prevent disease and to

*asked on June 10, 2011* -
## writing

Still, do-it-yourself renovations is usually a source of pride for new homeowners, no matter how hard or how frustrating. what correction should be made to this sentence? 1)remove the comma after still 2)change is to are 3) change the spelling of usually

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

Helium gas occupies a volume of 0.04 m 3 at a pressure of 2 x 10 5 Pa (Nm -2 ) and temperature of 300 K. Calculate (i) the mass of the helium. (ii) the r.m.s. speed of its molecules. (iii) the r.m.s. speed at 432 K when the gas is heated at constant

*asked on October 24, 2016* -
## Geography

What is the relation between geography and chemistry

*asked on October 19, 2011* -
## mathematics

find the modulus argument and principal argument of each of the following a) i b) -√5

*asked on May 29, 2019* -
## physics

What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius

*asked on May 18, 2016* -
## physics

1)a galvanometer has a resistance of 40 ohm and is of 3 mA full-scale deflection.how would you modify it to act as a 0-5 A ammeter? 2)the galvanometer described in question 1 is to be converted into a 0-5 V voltmeter. a)when the voltmeter is connected to a

*asked on March 2, 2016* -
## PSY 410 Abnormal Psychology

HELP- My text book wont let me open on my laptop and I can't seem to find the information I need. Create a timeline that displays the development of abnormal psychology. Include at least seven main milestones

*asked on January 26, 2015* -
## math

the sum of two different numbers is 40 . if the smaller number is divided by 4 and the larger number by 12 the sum of the quotients is 6.find the larger number

*asked on September 1, 2018* -
## Chemistry

Hydrazine has the formula N2H4 and is used as a rocket fuel (e.g. for the Apollo moon rockets). It burns in the following reaction for which the enthalpy change is -583 kJ/mol. N2H4(g) + O2(g) → N2(g) + 2 H2O(g) Calculate the N-N bond enthalpy in

*asked on November 15, 2017* -
## physics

a conducting loop consisting of a half circle of radius r=0.2m and three straight sections the half circle lies in a uniform magnetic field B that is directed out of the page the field magnitude is given by B=(4t^2 + 2t + 3)T .w/r t is in second. an ideal

*asked on March 31, 2016* -
## Math

For what values of k does the line y= x + k pass through the circle defined by x^2 + y^2 = 25 at: 2 points? 1 point? 0 points? I found the discriminant: 100- 4k^2 but i don't know how to find for each of the points

*asked on March 26, 2015* -
## chemistry

calculate the total vapour pressure of mixture of methanol(64g) and ethanol(92g) at 298K given that the pure vapour pressure of methanol is 90mmHg and ethanol is 45mmHg (C=12, H=1, O=16)

*asked on May 24, 2019* -
## Pre calc

sin(θ − ϕ); tan(θ) = 5/12 θ in Quadrant III, sin(ϕ) = − sqaure root10/10 ϕ in Quadrant IV. I used the sin equation sin(a)cos(b)-sin(a)cos(b) However I am still getting the wrong answer

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

a galvanometer has a resistance 60 ohm and is of 5mA full scale deflection.how would you modify it so as to get 0-10V voltmeter

*asked on March 6, 2016* -
## Math

Determine the number of diagonals in a regular 40-gpn

*asked on September 13, 2013* -
## math

list the integers between -5 and 2, inclusive.

*asked on August 27, 2011* -
## writing

The cost of new homes is high today. Many people are purchasing older homes in need of renovation. the most effective combination of sentences 1 and 2 would include which of the following groups of words? 1) although many homes need renovation 2)although

*asked on June 10, 2011* -
## Physical Education

The ability of your heart and lungs to work effectively when you exercise and to return to normal when you stop is what? Cardiovascular recovery. I hope this helps. Thanks for asking.

*asked on November 28, 2006* -
## English

As a senior prefect of your school wite a speech you would give to fresh students telling them at least three things that can make their stay in the school successful

*asked on February 12, 2020* -
## chemistry

what are the limitations of depression of freezing point

*asked on May 25, 2019* -
## physics

A stunt flier is moving at 15m/s parallel to the flat ground 100m below,how large must the distance x from plane to target be if a sack of flour released from the place is to strike the target?

*asked on October 8, 2017* -
## Pre calc

A 20-ft ladder is leaning against a building. If the base of the ladder is 7 ft from the base of the building, what is the angle of elevation of the ladder? (Round your answer to one decimal place.) How high does the ladder reach on the building? (Round

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

the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled the concentration of B is halfed and the rate of the reaction would -------by a factor of --------

*asked on March 3, 2016* -
## Algebra (Quadratics)

The height y (in feet) of a baseball thrown by a child is y = -1/10 x^2 + 3x + 6 where x is the horizontal distance (in feet) from where the ball was thrown. Will the ball fly over the head of another child 30 feet away trying to catch the ball? (Assume

*asked on September 25, 2014* -
## Algebra

What is the measure of each of the angles of a regular 5 sided polygon?

*asked on September 13, 2013* -
## English

My task is to write a persuasive article for my chool website about an issue related to school meals. My title is 'Unhealthy heaven' My sub-heading is 'Those hungry humans crave for tasty foods. What will it be?' My introduction's main point is that '

*asked on November 13, 2011* -
## French

Bonjour! I have to find synonyms for the word Fantastique the synonyms should begin with g .... t... b... s... Thanks

*asked on November 7, 2011* -
## Physics

7. In a meeting room, there are chairs, a table, and people. Which of these things has a temperature a) lower than, b) greater than, or c) equal to the temperature of the air?

*asked on April 27, 2010* -
## History

Hello. I am doing an essay on the impact of the industrial revolution. I have done the intoduction and two paragraphs. Please can you give me some feedback. thanks What was the impact of the Industrial Revolution The Industrial Revolution was a period from

*asked on March 3, 2010* -
## Chemistry

Describe the manner in which ketohexose acts as a reducing sugar in the Benedict test.

*asked on September 16, 2008* -
## Calculus

Determine the volume of the solid abtained when the region bounded by y=sqrt x and the line Y=2 and x=0 is rotated: (i) about the x-axis (ii) about the line x=4. (i) Each element of the body of revolution with thickness dx, has area pi*(sqrt x)^2 dx = pi x

*asked on August 12, 2006* -
## Math

Car travels 200 miles using 8 gallons of gas. How many miles per gallon can the car travel

*asked on January 8, 2020* -
## Math

A bucket when a fifth full holds 10 litres .How many litres will it hold when it is full?

*asked on October 29, 2018* -
## math

the H.C.Of two numbers is 7and their L.C.M is 140.If one of the numbers is 28,find the other number

*asked on September 1, 2018* -
## math

Assume x and y have 5:3 profit sharing ratio respectivly and a new member enters by taking 1/5 from x and 1/3 from y.what will be the new ratio of the three people?

*asked on August 10, 2018* -
## pre calc

To measure the height of the cloud cover at an airport, a worker shines a spotlight upward at an angle 75° from the horizontal. An observer D = 600 m away measures the angle of elevation to the spot of light to be 45°. Find the height h of the cloud

*asked on March 27, 2017* -
## chemistry

the reaction A+3B—>2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled and the concentration of B is halved the rate of the reaction would---------------by a factor of-----------

*asked on March 3, 2016* -
## chemistry

the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled the concentration of B is halfed and the rate of the reaction would -------by a factor of --------

*asked on March 3, 2016* -
## physics

a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates and the charge density

*asked on February 15, 2016* -
## physics

what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.

*asked on December 28, 2015* -
## Algebra

How do I answer this? Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the length of the first shelf. The third shelf is 12 centimeters shorter than the first shelf. The remaining

*asked on April 13, 2015* -
## math

what is the money value of 0.098

*asked on December 5, 2014* -
## stats

If a random sample of size n = 65 is drawn, find ¦Ìx, ¦Ò x and P(24 ¡Ü x ¡Ü 26). (Round ¦Ò x to two decimal places and the probability to four decimal places.) ¦Ìx = Correct: Your answer is correct.

*asked on March 3, 2014* -
## Algebra

Find the equation of the circle having the given center and radius. center (-5,1), radius 6 squared.

*asked on September 14, 2013* -
## Algebra

A sales force has 10 men and 10 women. A production unit of 7 people is set up at random. What is the probality that it will consist of 3 men and 4 women

*asked on September 14, 2013* -
## Algebra

In 2000 in country A the average family net worth was $440,000 and there were about 8.4x10to the power of 7, families. Caculate the family worth in country A in 2000.

*asked on March 6, 2013* -
## Algebra

A tugboat goes 160 miles up stream in 20 hours, return trip downstream takes 5 hours. Find speed of tugboat without the current and the speed of the current

*asked on March 6, 2013* -
## Pre Algebra

A wooden railing is 82 feet long. It is to be divided into 4 pieces. Three pieces will be the same length, and the fourth piece will be 2 feet longer than each of the other three. Find the length of each piece.

*asked on February 18, 2013* -
## math

My algebra question is; The ordered pair (3,0) is found? I don't have a clue. Can you help please? Thank you, Ruth

*asked on August 30, 2012* -
## Math

Tanker boats cannot be in the bay when the depth of water is less or equal to 25 feet. Set up an inequality and solve it graphically to determine all points in time, t, on the interval 0 less than or equal to t less than or equal to 24 when tankers cannot

*asked on August 22, 2012* -
## Econ/stats

The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line

*asked on April 29, 2012* -
## Physics

Why would you get an e3lectric shock if you flew a kite close to the electricity wires?

*asked on March 13, 2012* -
## PHYSIC

1)What must be the orbital speed of a satellite in a circular orbit 740 above the surface of the earth? 2)What is the period of revolution of a satellite with mass that orbits the earth in a circular path of radius 8000 (about 1630 above the surface of the

*asked on November 8, 2011* -
## Biology

I have written an answer for the question below. Why do Ellie and her brothers resemble her parents? Explain how genetic information passes from parents to their offspring. Please check if i have included all the scientific words and if i have explained

*asked on November 5, 2011* -
## French

Thank you so much for your help so far Sra! Highly appreciated! This might get confusing! I hope it wont! Key: ' ' - corrections { } - The parts you do not understand ( ) - what i want to say(in english) to replace the parts you do not understand. Hope

*asked on October 25, 2011* -
## French

My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your family, what your views on marriage are, a descrition of your best friend(s), what you did yesterday and what your plans for the

*asked on October 25, 2011* -
## PYSICS

The upward normal force exerted by the floor is 600 N on an elevator passenger who weighs 610 N. What is the reaction force to the upward normal force exerted by the floor? What is the reaction force to weight of the passenger? What is the magnitude of the

*asked on October 19, 2011* -
## math

write the opposite, reciprocal, and absolute value of each number . A: -1/2 #: 4 C: 0

*asked on September 9, 2011* -
## writing

They emphasized the importance of good maternal and child health care, including the administering of vaccines. what correction should be made to this sentence? 1) replace they with it 2) change emphasized to emphasize 3) change the spelling of importance

*asked on June 10, 2011* -
## writing

Sentence 10: Finally, friends whom you haven't seen in years, long-lost relatives, and even mere acquaintances will begin calling in february to plan a lengthy visit with you in the summer. what correction should be made to this sentence? 1)change friends

*asked on June 10, 2011* -
## algebra

t squared plus 10t plus 16

*asked on April 6, 2011* -
## Pos/110 american government

Can someone help please??? 1. Assignment: American Government Concepts • Resources: Chapter 1 of the text lists several key concepts in American government. Among these are government, politics, policymaking system, public policy, democracy, majority

*asked on March 30, 2011* -
## English Criticism

POEM FOR ELSA by Michael Roberts THAT day the blue-black rook fell pitifully dead You wept and stormed, tossing your lovely head, Hurling commiseration into broken skies That wept and wept, vainly as any eyes. You pitifully wept, nor would be comforted

*asked on November 22, 2008* -
## science

ogranelle that modifies,packages and transport material out of the cell describes an organism that can exist onlly as a group of cells one of the structures a cell uses t o live ,grow and reproduce Ruth, Shondra, Jimmy -- We do not do your homework for

*asked on August 19, 2007* -
## math

a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr .(a)find its position after 24hrs. (b)the plane turns and flies at the same speed due west to reach Q longitude 12 degrees west.find the distance it has travelled

*asked on February 19, 2020* -
## math

a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr.find its position after 24hrs

*asked on February 19, 2020* -
## Calculus

Find the distance traveled in 45 seconds by an object traveling at a velocity of v(t) = 20 + 3cos(t) feet per second.

*asked on January 15, 2020* -
## Chemistry

During the determination ofCaCO3 in chalk content by back titration. a_what inert materials are likely to be present? b_suggest other suitable indicators of the reaction.

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

jimush walks 40m eastward and 30m southward the angle made between the two distance is 90degree calculate the other angels

*asked on October 13, 2019* -
## Chemistry

Ethanol has a density of 0.789 g/ml what volume of ethanol in litres would have a mass of 500g

*asked on September 30, 2019* -
## mathematics

perform the indicated operation and express your result In a standard form i) (4+3i) + (6+4i) ii) 3 + 4i/6+3i

*asked on May 29, 2019* -
## mathematics

in a class of 50 student,18 offered mathematics, 21 offered chemistry while 16 offered biology, 7 student offered mathematics and biology, 9 student offered chemistry and biology while 5 student offered the three subject combination. a) find the numbers of

*asked on May 29, 2019* -
## life orientation

how can i advise a friend who response to a conflict avoidance that is not a healthy for sustaining positive relationship

*asked on February 3, 2019* -
## math

The human resources department of a consulting firm gives a standard creativity test to a randomly selected group of new hires every year. This year, 50 new hires took the test and scored a mean of 111.6 points with a standard deviation of 14.3. Last year,

*asked on December 14, 2018* -
## Chemistry

If 20g of NaCl was used to form a 250cm3 of saturated solution of NaCl at 25oC. Calculate the solubility of the salt in mol/dm3 at that temperature. (Relative density of solution-1).

*asked on December 12, 2018* -
## Biology

List 15 mechanical and 15 biological vectors and the diseases they transmit.

*asked on November 13, 2018* -
## Math

Solve 1/8^2-3x=2y+2 find x using equation formula

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

Solve 1/8^2-3x=2y+2 find x using e question formula

*asked on October 27, 2018* -
## physics

describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar forces acting at a point.

*asked on September 12, 2018* -
## math

Two fractions have the same denominator,15. The difference between the fractions is 2/5,and the result of dividing one of them by the other is 4/7. What are the fractions?

*asked on September 8, 2018* -
## math

If (a+b)^2 = a^2 + 6b +b^2 ,what is the value of a?

*asked on September 1, 2018* -
## science

Importance of reflection of sound waves

*asked on August 21, 2018* -
## math

a contractor needs two men and 5 litres of paint to paint on a fenced wall that is 40m by 3m in 9 hours. how many men and how much paint does he need to paint a fenced wall 20m by 12m in 3 hours

*asked on August 21, 2018* -
## math

express 7.179179... as a fraction

*asked on August 20, 2018* -
## math

Express 4.050505... as a fraction

*asked on August 20, 2018* -
## math

a candy mixture is made from two kinds of candy one kind costs twice as much per kg as the other kind.$10 worth of the less expensive candy is mixed with $8 worth of the more expensive candy to make 7kg of the mixture what is the price per kg of each kind

*asked on August 19, 2018* -
## Math

An arc of lemgth 28cm subtends an angle at the centre of a circle. In the same circle, what angle does an arc of length 35 subtend

*asked on March 9, 2018* -
## English

Vaping should be outlawed. Agree or disagree?

*asked on November 17, 2017* -
## Math

Find the square root of 25xsquared-40xy+16ysquared

*asked on September 15, 2017* -
## HOME ECO

ANOTHER WORD FOR NUTRITION

*asked on May 21, 2017* -
## business mathematics

Please assist me to factorise the following. 4x^3 + 5x^2y - 4xy^2 - 5y^2 \

*asked on April 2, 2017* -
## Math

Each day Trinh buys a can of soda at a machine in her apartment building for $.75. Instead, she could buy a 12-pack at the grocery store for $4.99. If she did this, how much money would she save in a month

*asked on October 25, 2016* -
## Physics

a 1 kg textbook has been pushed and let go sliding to the left on a flat table no one is pushing the book at this moment. it is sliding a. calculate the weight of the textbook? How do I do these calculations? b. based on this weight, what must the normal

*asked on October 16, 2016*