05/10/20

Airplane velocity facing wind pressure
An airplane is heading South-east at 600 km/h when it encounters a wind coming from a bearing of 45 degrees at 60 km/h. Find the resultant ground velocity of the airplane.
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10/23/18

Y= 2x + 10 y= -2x - 6
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09/28/18

one number is two more than 3 times the other number and the sum is 25 what are the two numbers
 i can't come up with the answer
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09/27/18

Volume of water in barrel
for time t is equal to or greater than 1 hours the volume of water in barrel is  v(t) = 50-20/t2 how much water is in barrel at t=2 hours?  Compute lim t--> infinity  what Does this mean?   
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07/17/18

A painter requires a program to calculate the number of litres of paint needed for a job.
One litre of paint will cover 8 square meters, write a program that accepts the number of square meters to be painted and it will show number of litres needed
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03/09/18

if i took a 10mL sample from 2litres of a 100mM soulion of Nacl what would be the concentration of Nacl in my 10mL
Having trouble solving this could do with some help thank you
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03/09/18

What rate is the cost to produce the cats changing?
The cost of manufacturing stuffed yellow cats is C(x)= 1/3x2 + 4x + 53 where x is the number of cats produced in thousands. The production level for the number of stuffed cats produced after t... more
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02/25/18

write a for loop that displays the following set of numbers: 0,10,20,30,40,50....1000
need help on this I'm kinda confuse
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11/11/17

How is this to be solved?
A man's work day is 8  1                                          2 hours. He spends 3 1    2 hours dealing with customers and the remaining time working in his office.   (a) What fraction of... more
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11/01/17

A bag contains 3 blue marbles, 5 red marbles and 4 green marbles. What is the probability you choose a red or a green marble?
3 blue marbles, 5 red and 4 green.  What is the probability of choosing a red or green marble ?
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10/29/17

Help with this Algebra 2 question!!!
Question #7: Write a conic equation in standard form for each of the following descriptions.A: An ellipse centered at (-2,3) with a major vertical axis 14 units long and a minor axis 6 units long.
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04/25/17

Can you answer this question with work please?
a substance has a half-life of 50 years if 300 kilograms are present initially how much will remain after 15 years?
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04/25/17

(x + 1/2)^2 + 4 = 0 #solve the quadratic equation by using any method. #Write imaginary solutions in the form a + bi.
(x + 1/2)^2 + 4 = 0 #solve the quadratic equation by using any method. #Write imaginary solutions in the form a + bi.
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04/24/17

Help proving differential equation
I', really stuck on this one HW question:   I have to show how dC/dt = (D * (d^2C/dx^2)) + P at steady state (so when cD/dt =0)equals: (d^2C/dz^2) + (Pa^2/D C(a)) = 0 using C= C(x)/C(a) and z=x/a... more
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04/22/17

find f if f''(x)=
Find f if f′(x)=6x−[3/x^4],  x>0, and f(1)=3.   f(x)=_____
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04/19/17

look at description
Find the area given a regular polygon with 7 sides and your given the line that goes from the center of the polygon to a vertex on the polygon that is equal to 6.8
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04/19/17

What is Sue's age
Sue's age is 12 yrs less than twice Jack's age. Let J be for Jack's age and S for Sue's age . Which equation represents Sue's age? S=2(12-J                              ... more
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04/19/17

Find the intersection in the x ⁢ y-plane of the lines y equals negative 3 x plus 7 and y equals 10 x minus 4.
Find the intersection in the x ⁢ y-plane of the lines y equals negative 3 x plus 7 and y equals 10 x minus 4.
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04/19/17

solve by multiply then add
3x - y = 8
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04/16/17

Consider the homogeneous linear system and express the solution set of this system as a span of a sequence of vectors.
x1 + x2 + 2x3 + 2x4 = 0 x1 + 2x2 + x3 + 3x4 = 0 x1 + 3x2         + 4x4 = 0
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04/15/17

how to solve this
An aluminum wire having a cross-sectional area of 4.00 ✕ 10-6 m2 carries a current of 6.00 A. Find the drift speed of the electrons in the wire. The density of aluminum is 2.70 g/cm3. Assume each... more
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04/14/17

y^'=(-4x)/y Solve the differential equation using separation of variables.
y^'=-4x/y   How do I solve the differential equation using separation of variables?
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04/13/17

What is the value of K for this aqueous reaction at 298K?
A+B<-->C+D delta G=24.54J
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04/13/17

what is the equation of an exponential growth function, crossing points (0,0) and (1,3) with a horizontal asymptote at y=6?
I need to know the function's equation 
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04/12/17

Eight subtracted from the product of 55 and a number is 87.
Eight subtracted from the product of 5 and a number is 87.
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