# Questions on Test Module answered by real tutors!

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 Test Module Solvers Lessons Answers archive Quiz In Depth

 Question 350070: A is 4 years older than b,who is 3 times as old as c.if the sum of their ages is 25 how old is b? Click here to see answer by algae132(1)

 Question 354750: Please help me solve this problem: On the number line below,the coordinates of two points are shown. If the distance between the points is 2, what is the value of x? -- -- --.-- --.-- --> 0.03x 0.04x Click here to see answer by solver91311(16872)

 Question 354744: Please help me with this problem: If 75 < x-2 divided by 3 < 76,what is one possible value of x-2 divided by 6? Click here to see answer by Edwin McCravy(8893)

 Question 354757: Please help me solve this problem: On the number line below,the coordinates of two points are shown. If the distance between the points is 2, what is the value of x? -- -- --.-- --.-- --> 0.03x 0.04x Click here to see answer by stanbon(57282)

 Question 355136: A sphere has a radius of 20 cm. How many spheres of 10-cm will have the same surface area as the surface area of the sphere? Explain. Click here to see answer by ewatrrr(10682)

 Question 360411: ASSIGNMENT 06 MA240 College Algebra Can you help with these questions? Thanks ￼ 2. Use the graph of the function to estimate: a. f(2) b. f(–4) c. All x such that f(x) = 0 3. For the following graph: ￼ a. Find the domain of f. b. Find the range of f. c. Find the x-intercepts. d. Find the y-intercept. e. Find the intervals over which f is increasing. f. Find the intervals over which f is decreasing. g. Find the intervals over which f is constant. h. Find any points of discontinuity. Click here to see answer by Edwin McCravy(8893)

 Question 366424: How do i derive the function f(t)= -20(t-20)3 + 20,000 Click here to see answer by edjones(7569)

 Question 374060: Find the equation of the bisector of the acute angles and also the equation of the bisector of the obtuse angles formed by the line x+y =2 and x + 2y = 3. Click here to see answer by robertb(4012)

 Question 387632: Find a pair of numbers (x,y) so that expression x^2 + y^2 - 2x gives as small a value as possible. Click here to see answer by edjones(7569)
 Question 387632: Find a pair of numbers (x,y) so that expression x^2 + y^2 - 2x gives as small a value as possible. Click here to see answer by robertb(4012)

 Question 388033: A box whose weight is 182kg is drawn with constant speed 21m along a horizontal concrete floor. the kinetic friction between the box and the floor is 0.58. Calculate the work done when the box is drawn with horizontal force. ( g = 9.81 m/s^2 ) Click here to see answer by Fombitz(13828)

 Question 388286: Find the minimum of function f(x) = (x+1)^3 - (x-1)^3 Click here to see answer by Fombitz(13828)
 Question 388286: Find the minimum of function f(x) = (x+1)^3 - (x-1)^3 Click here to see answer by Alan3354(30993)

 Question 388298: A lamp is marked 12V/10W. the lamp is connected to 24V accumulator. in series with lamp you must then connect a resistor. Calculate the resistance of the resistor. Click here to see answer by solver91311(16872)

 Question 388857: Any knows about this ? After a rise in price of petrol, the driven mileage dropped by 6.7% , however the fuel costs increased by 4.5%. By what percentage did the petrol price rise ?? Click here to see answer by josmiceli(9664)

 Question 388845: A man is surveing the landscape at a spot where his eyes are 10,Om above the sea level. In the sky there is a tiny purple cloud, the inclination of which is 62°above the horizon. The reflection of the cloud from the surface of the sea has an inclination, which is 65° below the horizon. Find the height of the cloud above the sea level. Hint: The angles, which the source and reflection form with the surface of the sea, are the same I REALLY CANT FIND WHERE IS THE MISSING PART Click here to see answer by Alan3354(30993)

 Question 388964: Two mirrors Ml and M2 are placed in contact at an angle of 100°. A ray is incident at 45 ° to the normal to M1. In what direction does the light leave M 2 why the solution is 35 Click here to see answer by richard1234(5390)

 Question 388774: A man is surveing the landscape at a spot where his eyes are 10,Om above the sea level. In the sky there is a tiny purple cloud, the inclination of which is 62¤ above the horizon. The reflection of the cloud from the surface of the sea has an inclination, which is 65,0° below the horizon. Find the height of the cloud above the sea level. (Hint: The angles, which the source and reflection form with the surface of the sea, are the same.) Click here to see answer by Alan3354(30993)

 Question 391774: Hai sir, please help me on this problem for wht value of K are the numbers x, 2x+K and 3x+6 three consecutive terms of an A.P Thank you Click here to see answer by stanbon(57282)

 Question 392658: Hai sir, please help me on this problem Namita has a garden in front of her house. The garden is in the shape of a trapezium. The lengths of the parellel sides of the garden are 15 m and 20 m and the distance between these parallel sides is 12 m. She wants to spread fertilizer in the garden, which costs Rs.5 per square metre. Namita is wondering what it will cost her to spread the fertilizer in the entire garden. Click here to see answer by Earlsdon(6287)

 Question 395149: A horse chases a pony 3 hours after the pony runs. Horse takes 4 hours to reach the pony. If the average speed of the horse is 35 kmph, what s the average speed of the pony? Click here to see answer by mananth(12270)
 Question 395149: A horse chases a pony 3 hours after the pony runs. Horse takes 4 hours to reach the pony. If the average speed of the horse is 35 kmph, what s the average speed of the pony? Click here to see answer by stanbon(57282)

 Question 397774: Dear sir, i got stuck on this, can you pls help me "Force F = 2i – 5j + 3k displaces a particle from A to B. Position vectors of A and B are, A = i + 2j + 3k and B = 3i + 5j + 8k. Find the work done by the force on the object. a)6 units b)4 units c)10 units d)12 units" Click here to see answer by robertb(4012)

 Question 397766: Hai sir, please help me on this problem "Determine all inflection points of function f defined by, f(x) = x4 + x3 + 2 a)(0,1) and (1/2, 15/31) b)(0,1) and (1/3, 12/32) c)(0, 2) and ( -1/2, 31/16) d)None of these Click here to see answer by robertb(4012)

 Question 397768: Hai sir, please help me on this problem, " "The volume of a cube is increasing at a rate of 9 cubic centimeters per second. How fast is the surface area increasing when the length of an edge is 4 centimeters? a)9 cm2/s b)8 cm2/s c)6 cm2/s d)None of these Click here to see answer by robertb(4012)

 Question 404222: Does water reflect light in the same way with mirrors? i mean...angle of reflection = angle of incidence?! Click here to see answer by Alan3354(30993)

 Question 404874: if a person have 15 rupees then how we divide it into half, one-third and one-ninth plz expalin? Click here to see answer by rfer(12654)

 Question 407505: The heating element is rated 1.80 kW when operating voltage is 0.24 kV. a)What is the current through it? b)What would its power consumption be if the potential difference drops to 0.12 kV? Click here to see answer by Alan3354(30993)

 Question 408134: PLEASE HELP!!!!!!!!!! Motorcyclist with a total mass 320 kg stops from a velocity of 36km/h in 25 s without braking. The same motorcyclist accelerates in the same conditions from full stop to velocity of 126km/h in 6 s. Calculate the constant forward carrying force of the engine, if the forces restricting the motion remain constant. Give the answer in 1 N precision Click here to see answer by MathLover1(6625)

 Question 408959: PLEASE HELP WITH STEPS A meteorological balloon has volume of 20.0 m^3 and a weight of 10.5 kg (gas included). What amount of cargo in kg can the balloon lift? The density of the air is 1.18 kg/m^3 and acceleration of gravity 9.81 m/s^2. Click here to see answer by ankor@dixie-net.com(15645)

 Question 414746: The total capacity of the pool is 1000 cubic meters. the filling of the pool started on Thursday morning at 6 o’clock. On Friday morning at 9 o’clock when the pool was being filled, the pump for removal of water was started by mistake. Starting from this point onwards, water was both added and removed from the pool. The pool became empty on Monday evening at 6 o’clock pm (18:00). It can be assumed that the rate at which the water was added and removed were both constant. . a) When would the pool have been full if the pump to remove the water had not been started? State in your answer the day of the week and the time of the day with the accuracy of one hour. You can solve the problem graphically or mathematically. b) How many cubic meters of water does the removing pump get rid of in 24 hours? Click here to see answer by ankor@dixie-net.com(15645)

 Question 416953: Hai Sir, please help me on this problem, i could find the soultion If (m+1)th term of an AP is twice the (n+1)th term, prove that (3m+1)th term is twice the (m+n+1)th term. Thank you Click here to see answer by stanbon(57282)

 Question 419132: If Sally can paint a house in 4 hours, and John can paint same house in 6 hours, how long will it take for both of them to paint same house together? Click here to see answer by mananth(12270)

 Question 430948: how many moles of HCl we get for mixing 1 mole of hydrogen and 1000000 moles of chlorine?? Click here to see answer by solver91311(16872)
 Question 430948: how many moles of HCl we get for mixing 1 mole of hydrogen and 1000000 moles of chlorine?? Click here to see answer by richard1234(5390)

 Question 434438: the equation f a linear relation is: y=-3x+8 some ordered pair in the relation are: (-1,11),(0,8),(1, ),(2,2),( ,-1),(4, ) find the missing numbers in the ordered pairs Click here to see answer by edjones(7569)

 Question 435639: what number should be added to both sides of the equation to complete the square? x to the second power +10x=3 Click here to see answer by Alan3354(30993)