03/17/17

The length of a rectangle is 11 ft more than twice the width , and the area of the rectangle is 63ft ^2 . Find the dimension of the rectangle
Length : ? Width :?
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03/17/17

M varies directly with the square of D and inversely with the square root of x; m=24 when d=3 and x=16.
   Solve for m   
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03/17/17

The half-life of strontium-90 is 28 years. How long will it take a 64 mg sample to decay to a mass of 16 mg?
Answer:_________ Years   m=c(1/2)^t/h
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03/17/17

a town's population is projected to grow 2.4 percent a year. How will its population size compare to its current population 25 years from now?
This an from a works sheet about logarithms and I am so confused.
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03/17/17

what are some fun facts about the midwest reigon
im lookig for intresting facts about the midwest  
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03/17/17

A boy is paddling bicycle it is moving with the speed of 7 m/s suddenly breaks applied speed reduces to 2 m/s find the work of break done on bicycle
Send me the whole solution of question
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03/17/17

a need help for this question
A baseball is hit so that its height in feet, t seconds after it is hit, can be modeled by the function h(t) = –8t^2 + 37t – 3. A hawk takes off from its nest 28 feet above the ground at the same... more
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03/16/17

$405 at 15% for 3 years
Answer my question plz explain steps 
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03/16/17

Algebra 1 story problem
the  height h (in feet) above  the water of a cliff diver is modeled by h= -16t^2 +10t + 26,  where t is the time (in seconds).  How long is a diver in the air?
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03/16/17

How long will it take you to drive 225 miles at a speed of 25 miles per hour?
how long will it take you to drive 225 miles at a speed of 25 miles per hour?
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03/16/17

Chemistry Question
Calculate the change in internal energy when 2.50 kl of energy is transferred as heat to 1.50 mol N2 at 298 K and 1 atm at constant pressure. Assume ideal gas. the molar heat capacity at constant... more
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03/16/17

Denver ignites a firecracker.
The sound is reflected from a wall located at a distance of 275m away and the echo is heard 1.6s after. what is the speed of sound? ans. 340m/s   ps. How can I get the right answer?
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03/16/17

If a sample of helium has a volume of 12.0 L at 625K, What is the new volume when the temperature changes to 450k
gas laws activity If a sample of helium has a volume of 12.0 L at 625K, What is the new volume when the temperature changes to 450k
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03/16/17

Impulse and force
I've been stuck on this question forever and I keep getting it wrong :( Please help!   A truck of mass 3 tonnes is travelling at 105km/h when it hits a car of mass 1.5 tonne travelling in the... more
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03/16/17

A 2 L flask is filled with propane gas at 1 atm and -15.0*C. What is the mass of the propane in the flask
 Please give a detailed explanation and what formula to use and why
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03/15/17

Show how mass is conservered in the following
Show how mass is conserved in the following equation. Show math. 3 Ag2SO4(aq) + 2 Ni(s) ---> Ni2(SO4)3(aq) + 6 Ag(s)
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03/15/17

Differential Equations
Find a general solution. 1. u''+7u=0   2. y''-2y'+26y=0   Solve the given initial value problem.3. y''+9y=0     Would someone mind explaining these problems?
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03/15/17

A sundae costs $2. Additional toppings cost $.50 each. Write in to variables that represent the total cost of sundae
I don't understand it
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03/15/17

i really do not understand
Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures 70°F in the morning, rises to a high of 80°F, falls to a low of... more
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03/15/17

Find: (i) a cation (ii) an anion AND GIVE REASON FOR YOUR ANSWER
substances from A to E have in them distribution of electrons,protons and neutrons as follows:     substance  electrons    neutrons   protons A                4                 4              ... more
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03/14/17

where x(t) = cos(2/3)t-(3/4)sin(2/3)t express x(t) in the form Acos((2/3)t+y)
Hint says to use the formula  cos(x+y)=cos(x) cos(y) - sin(x) sin(y)
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03/14/17

Greek was the official language of the Roman Empire
language of roman empire
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03/14/17

how does 2cosxsec^2x simplify into 2secx?
I'm using MML for trig homework and it's trying to show me an example because I'm not getting this one problem. The example says that 2cosxsec^2x=2secx and I don't understand how?
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03/13/17

Physics Quetion
A 0.46 kg mass vibrates according to the equation x = 0.48 cos 8.37t, where x is in meters, and t is in seconds. (a) Determine the amplitude. 0.48 m (b) Determine the frequency. Hz (c) Determine... more
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03/13/17

how to tell if it is inverse or direct variation
why is there a difference between inverse and direct variation.
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