2,208 Answered Questions for the topic Pre Calculus

05/19/16

Rewrite the given parametric equations in Cartesian form
Rewrite the given parametric equations in Cartesian form: x(t)=2t-1 and y(t)=5t a) y=5x+5 b) y=(5/2)x+5/2 c) y=(5/2)x+1 d) y=5x+1
Follows • 2
Expert Answers •1

05/19/16

cos(2?)=1/v2 and 180 degrees<?<270 degrees
Find the value for cos(θ) if the following conditions hold: cos(2θ)=1/√2 and 180o<θ<270o a) -(√1+(√2)) b) -(√2+(√2))/4 c) -(√2(√2))/2 d) -(√2(√2))  
Follows • 4
Expert Answers •4

05/19/16

Find 4B (matrix)
Find 4B.  ⌈2  -4⌉ = B ⌊5  -1⌋   ⌈-8  -16⌉=a ⌊-20  -4⌋   ⌈8  -16⌉=b ⌊20  -4⌋   ⌈2   -4⌉=c ⌊20 -4⌋   ⌈8  -16⌉=d ⌊5   -1 ⌋
Follows • 1
Expert Answers •1

05/19/16

Write v in the form v = ai + bj
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〉j=〈0, 1〉 That is, write v in the form v = ai + bj.P1 = (0, −2), P2 = (0, 45) and... more
Follows • 2
Expert Answers •1

05/19/16

Determine the angle measure between vectors u and v: u = – 3i + 5j and v = 6i + 2j
Determine the angle measure between vectors u and v: u = – 3i + 5j and v = 6i + 2j .a) 0°, the vectors are parallel.b) 90°, the vectors are perpendicular to each other.c) 97.8°d) 102.5°
Follows • 2
Expert Answers •1

05/19/16

(5/3)^6x+2=(9/25)^-x+2
Given the exponential equation:(5/3)6x+2=(9/25)-x+2, find a common base and solve for x.a) -2/3b) -3/2c) 3/2d) 2/3
Follows • 2
Expert Answers •1

05/17/16

Pre Calculus
Given the exponential equation:(5/3)6x+2=(9/25)-x+2, find a common base and solve for x.a) -2/3 b) -3/2 c) 3/2 d) 2/3
Follows • 2
Expert Answers •2

05/17/16

Pre Calculus
How many winning lottery numbers are possible of a pick 5 where you must match all five numbers from 52 balls? a) 2,598,960b) 6.7 × 1065c) 311,875,200d) 120
Follows • 4
Expert Answers •4

05/17/16

Pre Calculus
Solve the equation in the real number system: 9x3+9x2-4x-4=0 a)-3, 0, 3 b)-2/3, 2/3, 1 c)-1, -2/3, 2/3 d)-5, 1, 5  
Follows • 4
Expert Answers •3

05/16/16

Pre Calculus
For the rational function f(x)=(x2-1)/(x3+9x2+14x), find the domain. a) (-∞, -7)∪(-7, -2)∪(-2, ∞) b) (-∞, -7)∪(-7, -2)∪(-2, 0)∪(0, ∞) c) (-∞, 0)∪(0, ∞) d) (-∞, 0)∪(0, 2)∪(2, 7)∪(7, ∞)  
Follows • 1
Expert Answers •1

05/16/16

Pre Calculus
Given the center, a vertex, and one focus, find an equation for the hyperbola: center: (4, −2); vertex (4, 2); one focus (4, -2+4√5)
Follows • 2
Expert Answers •1

05/16/16

Pre Calculus
Find an equation for the parabola described by its vertex, directrix, and focus point: vertex (√2,-√3); directrix x=2√2; focus (0,-√3)
Follows • 2
Expert Answers •1

05/16/16

Pre Calculus
Given the equation of an ellipse, identify the center point: 4x2 + 40x + 25y2 - 100y + 100 = 0
Follows • 2
Expert Answers •1

05/16/16

Pre Calculus
Given the vectors, a = 3i + 4j, b = -2i + 5j, c = 10i -j, find a + (b - c) = ?
Follows • 2
Expert Answers •1

05/16/16

Pre Calculus
Find the dot product between the vectors u and v: u = 6i - j and v = 4i + 2j
Follows • 2
Expert Answers •2

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
Pre Calculus Math Precalculus Math Help

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
Pre Calculus Math Precalculus Math Help

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
Pre Calculus Math Precalculus Math Help

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
Follows • 2
Expert Answers •1
Pre Calculus Math Precalculus Math Help

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
Pre Calculus Math Pre Calculus Math Help

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 Math Calculus Math Help

05/09/16

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)
Follows • 1
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.