# ruth

Popular questions and responses by ruth-
## 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* -
## 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* -
## Geography

What is the relation between geography and chemistry

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

.A ______________ _ is a signal to which an organism responds

*asked on December 27, 2010* -
## Algebra

A 12' ladder leans against a wall at 68 degree angle of elevation. Find the distance from the ladder's base to the wall.

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

How do i convert 0.0024 to scientific notation

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

Determine the number of diagonals in a regular 40-gpn

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

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

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

A limited access highway had an access reduction and lost 1/13 of its exits. If 264 of its exits were left after the reduction how many exits were there originally?

*asked on May 9, 2013* -
## 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

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* -
## 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* -
## Physics

A body travels from rest with acceleration 8m/s(squared)Find its velocity when it has covered a distance of 100 meter?

*asked on August 24, 2014* -
## Physics

A stone is thrown horizontally at 30.0m/s from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2s intervals for the first 10.0 s.

*asked on October 4, 2011* -
## math

list the integers between -5 and 2, inclusive.

*asked on August 27, 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* -
## English

Could you please tell me who/ what is the persona and who/what it is talking about? I got the idea of a snake and a spider but the two together don't make much sense in the context. I would really appreciate a fast rerply! "Eve" - by James Lasdun I like

*asked on February 27, 2010* -
## 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* -
## 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

a spherical ballon is inflated with gas at the rate 20cm^3 min. how fast is the radius of the ballon changing at the instant when the radius is 2cm

*asked on February 22, 2016* -
## chemistry

Discuss possible solutions to the reduced supply of light sweet crude oil. I have no idea to answer this question. Please advise me on how to answer it. Thanks in advance

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

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

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

what are the limitations of depression of freezing point

*asked on May 25, 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* -
## 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* -
## HOME ECO

ANOTHER WORD FOR NUTRITION

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

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* -
## 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* -
## math

what is the money value of 0.098

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

A straight highway leads to the foot of a tower of height 50m. From the top of the tower, the angles of depression of two cars standing on the highway are 30 degree and 60 degree. What is the distance between the two cars and how far is each car from the

*asked on October 17, 2013* -
## Algebra (Work Problem)

Susan's backyard has three faucets: A, B and C. If she turns on all three of them, it takes 380 minutes to fill the pool. If she turns on only A and B, it takes 570 minutes, and if she turns on only B and C, it takes 760 minutes. If she turns on only A and

*asked on September 22, 2013* -
## Algebra

what are the appropriate metric units for measuring Bryce Canyon National Park

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

In a triangle ABC, point o is the incentre AD=2", AB=9" and BC=10" find y

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

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

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

write the equation in slope intercept form and identify the slope and y-intercept 4x+9y=4

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

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

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

If you had 9 quarters, 6 dimes, 2 nickels and 3 pennies in a box, select on coin at random. What is the expected value of this experiment?

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

If the odds against John winning the election are 1 to 7,what is the probility that john will win the election

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

what factors account for the similarities and differences between the subdivisions in tropical climate zones?

*asked on September 9, 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* -
## Health

I know that most epidemiologist have masters on public health. Can one have a masters in community health. Or does the mph cover community health. Please explain.

*asked on July 16, 2011* -
## 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

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* -
## History

Is this ok? The Industrial Revolution was a period from the eighteenth to the nineteenth century during which major changes in agriculture, manufacturing, mining, and transport had a massive effect on the social, economic,and cultural conditions starting

*asked on March 4, 2010* -
## History

Well can i include that i think this is an interesting topic to study because you know about the different views. Can i add that to the statement?

*asked on March 3, 2010* -
## health care

Idnetify and describe three causes for the increasing costs of health care.What impact does each of these causes have on society?

*asked on August 15, 2009* -
## Physical Education

The smooth and effective working together of your muscles and bones is what? Some call it muscle tone.

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

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

*asked on January 8, 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* -
## mathematics

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

*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* -
## 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* -
## 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* -
## 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

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

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

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

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

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

Importance of reflection of sound waves

*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

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* -
## 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* -
## business mathematics

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

*asked on April 2, 2017* -
## 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* -
## 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* -
## world geography

The North African Maghreb states, dominated by the Atlas Mountains, do not include A. Libya. B. Algeria. C. Morocco. D. Tunisia.

*asked on October 5, 2016* -
## physics

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

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

consider a series R-C circuit consisting of a 30 ohm resistor and 20*10^-6F capacitor connected to a 100V,50Hz power supply.find the magnitude of the current and the angle by which the current leads the voltage.

*asked on April 4, 2016* -
## physics

prove that I=square root of (I^2avarage). using I=Iosin(wt)

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

what kind of reactions require oxidizing agent(reduced or oxidized) for example SO3->SO4 does it require oxidizing or reducing agent why?

*asked on March 23, 2016*