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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 352878: Solve. 6/w=8/w-1/3 I got the answer w=6. Is that right?
Click here to see answer by scott8148(6628)

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 367748: 6746 to the nearest hundred
Click here to see answer by stanbon(57282)

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 386177: I need help with minusing fractions and other fractions please help me if u want me to succeed so yaa thats about it ! HELP ME NOWWWWWWWWWWWWWWWWWWW

Click here to see answer by solver91311(16872)

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 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 403933: how manu ml go into 1L ?
Click here to see answer by Tatiana_Stebko(1326)

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)

Question 438388: Hai Sir, Can you please help me on this problem, i could not find the solution.
Differentiate: Log(sin x) using first principles.
Thank you.
Click here to see answer by richard1234(5390)

Question 440081: Hai sir, can you please help me on this problem, I could not find the solution,
One type of metal has a density of 4 grams/cm^3. Another type has a density
of 5 grams/cm^3. Weights are made from both types of metal. Calculate the
difference in volume of 500 grams weights made from the two types of metal.
Thank you.
Click here to see answer by Gogonati(809)

Question 440503: what number should be added to both sides of the equation to complete the square x^2+10x=3
Click here to see answer by edjones(7569)

Question 445550: The outside dimensions of a picture frame are 38cm and 35cm. The area of the picture inside the frame is 810 square centimeters. Find the width of the frame.
Click here to see answer by jorel1380(2518)

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