2,218 Answered Questions for the topic Pre Calculus
05/16/16
Pre Calculus
A force of 50 pounds is directed 30 from the horizontal, find the vector that represents this force
Follows
•
2
Expert Answers
•1
![]()
05/15/16
Pre Calculus
If vector v has an initial point at P1 and a terminal point at P2, write v as multiples of the basis vectors i=〈1,0〉and j=〈0,1〉That is, write v in the form v = ai + bj.P1 = (5, 2), P2 = (7, 11) and...
more
Follows
•
2
Expert Answers
•2
![]()
![]()
05/15/16
Pre Calculus
Find the dot product between the vectors u and v: u = 6i – j and v = 4i +2j .
a)11
b)22
c)-11
d)-22
Follows
•
2
Expert Answers
•1
![]()
05/15/16
Pre Calculus
If a force of 30 pounds is directed 30° from the vertical, what vector represents this force?
a)-15i+15√3 j
b)15i+15√3 j
c)-15i-15√3 j
d)15i-15√3 j
05/15/16
Pre Calculus
Find the projection of vector u onto vector v; projvu=(u(times)v)/llvll2)vu = 4i –5j and v = 2i + j . a)-6/5i-3/5j
b)-26/5i-13/5j
c)26/5i+13/5j
d)6/5i+3/5j
Follows
•
2
Expert Answers
•1
![]()
05/15/16
Pre Calculus
Let v= -3√2 i- 4√2 j. Find a unit vector that points in the opposite direction as v.a)5/3i + 5/4j
b)-3/5i - 4/5j
c) -5/3i - 5/4j
d) 3/5i + 4/5j
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus Derivatives
05/15/16
Derivative
If f(x)=8x^3-2x-6, approximate the derivative at x=2 using a forward difference approximation of (f(x+0.01)-f(x))/0.01
f'(2)=?????
Would you please explain how to solve this problem?
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
05/12/16
A tee on a gold course is 335 yards to the hole. The golfer hit from the tee 275 yards and 19 degrees to the left. How far is the ball from the hole?
A tee on a gold course is 335 yards to the hole. The golfer hit from the tee 275 yards and 19 degrees to the left. How far is the ball from the hole?
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
1) Find the quotient of the complex numbers 2(times)(square root of) 3 (cos (116 (degrees))+ i sin (116(degrees))) / 2 (cos(82(degrees)) + i sin (82 (degrees))) 2) RE write the complex in polar...
more
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
05/03/16
Find the equation of the ellipse with a vertex of (0,6) and a co vertex of (5,0)
Also find the equation of the ellipse for a vertex of (-4,0) and a co vertex of (0,3)
Pre Calculus
05/01/16
Pre-Calculus
Solve the equation on the interval [0,2pi).
√2 cos x - 1 = 0
x= pi/? , ?pi/?
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
05/01/16
Pre-Calculus
Solve the equation on the interval [0,2pi).
7 sec x - 7 = 0
x = ?
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
04/30/16
find sin2x, cos2x, tan2x when tan(x)= -1/2
sin2x =
cos2x =
tan2x =
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus Math
04/21/16
studying for my pre calculus test tomorrow and don't know how to solve these questions as I missed this unit
a)2cosθ +1 = 0 , 0°≤θ<360°
b)3tanθ -√3 = 0 , 0≤θ<2Pi
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus Math
04/21/16
Need help with pre-calculus, have test tomorrow so I need to know how to do this asap! Thanks!
Determine the approximate measure of all angles that satisfy the following..
a) tanθ=0.65 , -180°≤θ<360°
Follows
•
2
Expert Answers
•1
![]()
Need help understanding this stuff for my pre cal test tomorrow answer ASAP please! thanks!
Determine the appropriate measure of all angles that satisfy the following (Round to nearest decimal place)
a) cosθ = 0.25 , 0≤θ<360
b) sinθ = -0.85 , 0≤θ<2Pi
Thanks so much!!!!!
Need help with pre calculus please
Identify the measure for faida in the domain 0 DEGREES less than or equal to FAIDA less than or equal to 360 DEGREES such that P(FAIDA) in the given point.
a) P(FAIDA) =( -1/2, root3/2)
b)...
more
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
04/13/16
find a number c such that area ((1/x),1,c) =2
practicing for final in an entry level calc class and found a question like this, not sure how to approch it
Follows
•
3
Expert Answers
•2
![]()
Pre Calculus
04/13/16
How would I solve this? I have tried everything.
A spinning, unbalanced wheel is installed in an exhibit, and its angular velocity (in Hertz) is approximated by the equationω(t) = 8 cos(14πt + 7)+ 10.
Determine the approximation for the maximum...
more
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
04/12/16
Wendy took a trip from Davenport to Omaha a distance of 300mi. She travelled part of the way by the bus, which arrived at the train station just in time for Wen
Wendy took a trip from Davenport to Omaha a distance of 300mi. She travelled part of the way by the bus, which arrived at the train station just in time for Wendy to complete her journey by train....
more
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
04/01/16
Among all rectangles that have a perimeter of 122 find the dimensions of the ones who's area is the largest
Write answer in fraction form
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
03/22/16
solve the problem
What initial investment at 9% compounded semiannually for 3 years will accumulate to $12,000
Follows
•
1
Expert Answers
•1
![]()
03/20/16
thirty gallons of a 20% acid solution is needed for an experiment. Only 40% and 10% acid solution are available. How much of each should be mixed to form the ne
thirty gallons of a 20% acid solution is needed for an experiment. Only 40% and 10% acid solution are available. How much of each should be mixed to form the needed solution?
Follows
•
2
Expert Answers
•1
![]()
Pre Calculus
03/18/16
How to solve pythagreom identities
(1+tan^(2)x)/csc^(2)x
Follows
•
1
Expert Answers
•1
![]()
03/17/16
Calculate the area bounded by two curves below for x > 0.
Calculate the area bounded by two curves below for x > 0.
y=3xy=x^2
Follows
•
2
Expert Answers
•1
![]()
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
