09/21/22

Linear equations
How many ounces of a 10% acid mixture needs to be mixed with a 30% acid mixture to get 30 ounces of a mixture that is 25% acid?
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09/19/22

Calculus 3 sets
Find the following cardinalities:a. A={5,10,15,...,75}  b. A= { x ∈ Z : −100 ≤ x ≤ −17 }  c. A= { x ∈ N : x ≤ 10 } , B = { x ∈ N : x ≤ 12 }  
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09/06/22

Does anyone know the limit of 1/sin(x) as x approaches pi?
The problem shows as follows:limx→π 1/sin(x)If it does not exist, does anyone know why?
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09/03/22

Find all the value of x that satisfy at least one of the two inequalities 2x-7≤ 1 or 2x+1>3
Find all the value of x that satisfy at least one of the two inequalities 2x-7≤ 1 or 2x+1>3
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09/02/22

Integral question
Find integral of (x+1/x)^(1/2)
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09/01/22

Scalar and Projection
Find the scalar and vector projection of the vector b = <-1,1,4> onto the vector a = <2,2,-5>.I got the scalar projection to be -20/sqrt(33)but I couldn't figure out how to get the... more
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08/31/22

Trent can deliver his newspapers in 30 minutes. It takes Lois 20 minutes to do the same route. How long would it take them to deliver the newspapers if they work​ together?
I got a variation of this this wrong 4 times, need some help.
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08/30/22

Amazon is experimenting with drone delivery and you are asked to determine a drone's delivery route.
Amazon is experimenting with drone delivery and you are asked to determine a drone’s delivery route. The drone will leave the Amazon warehouse, make two deliveries, and then return to the... more
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08/29/22

I need to write an equation for this graph
I think the equation I'm supposed to use is: f(x)=A*cos(Bx-C)+DSo far I found the amplitude and period which is 2 and pi/2I'm kinda stuck on how to put it all together and write this equation(The... more
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08/29/22

Which of the following charge is not possible to occur?
a) 1.6 x 10^-19Cb) 3.2 x 10^-19Cc) 3.6 x 10^-17Cd) 3.6 x 10^-22CI'm getting D as the answer, is it correct?
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08/28/22

Need help with physics problem
Charge q2 in the figure is in equilibrium. Assume q = 5.4 nC. (+)q1 q ... more
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08/28/22

Let f be the function whose graph consists of the points {(3, 2), (5, 8), (7, −4)} and g be the function whose graph consists of the points {(−4, 5), (2, 8), (3, 6)}. Find (g ∘ f)(3).
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08/25/22

Mathematics research
Given that logr pq = m, logp qr = k and6 logq pr = n , show that m+n+k=mnk-2
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02/03/20

Help please... what is the value of F(t)?
An oscilloscope shows a wave that starts a cycle at its minimum of 20 units and reaches a maximum of 100 units before completing a five millisecond cycle. Which represents the relationship between... more
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01/28/15

Non Uniform Circular Motion
A racecar travels around a circular track with a constant speed v. Describe how the car's velocity vector (magnitude and direction) behaves, as a function of time. Describe how the car's... more
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01/26/15

wavelength, frequency, harmonic of its fundamental vibration
An open organ pipe is 0.84 m long. What is the wavelength of its fundamental vibration? What is the frequency of its fundamental vibration. What is the frequency of the first overtone? What is the... more
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01/25/15

Find the maximum height?
A stone weighing 1/2 lb is thrown upward from an initial height of 5 ft with an initial speed of 32 ft/s. Air resistance is proportional to speed, with k=1/128 lb-s/ft. Find the maximum height... more
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01/21/15

Find the transverse velocity of the point
A certain string has a linear mass density of 0.25 kg/m and is stretched with a tension of 25 N. One end is given a sinusoidal motion with frequency 5 Hz and amplitude 0.01m. At time t=0, the end... more
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11/13/14

Concept of Curvature
i. By means of appropriate examples in two, three and four dimensions, explain the concept of curvature.    ii. What criteria could be used to determine of a space (or spacetime) is flat or curved?
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07/15/14

Archimedes Principle: Expression for Uncertainty
Pfl=((T-T'')/(T-T')) Pw     Assume that all of the tensions (T, T', and T'') were measured and Pw  is a known constant.  Give a valid expression for the uncertainty of Pfl. So far I have u=T-T''... more
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