2,195 Answered Questions for the topic Pre Calculus

Pre Calculus Math Help

06/01/16

Hey need help with one question that I have been stuck on ! Answer ASAP please
Identify the following characteristics of the graph of each function   i) y-intercept  ii) x -intercept  iii) make a chart that represents the function   1) y = -3log2(x+1)-6   thanks so... more
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Pre Calculus

05/30/16

what is the sum of the integers from 19 to 45
What is the sum of the integers from 19 to 45 and how do you find it on a Ti-84 Graphing calculator if possible?
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Pre Calculus

05/27/16

i need help
 One side of a farmer's field is bordered by a straight stretch of highway. The opposite side is bordered by a river whose path traces a curve that is modeled by the function f(x)= 16 - x2 . The... more
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05/26/16

Pre Calculus
Which of the answer choices has matrix multiplication defined?A B C D⌈1 2⌉ ⌈5 6 7⌉ ⌈-1 2 3⌉ [5 9 7] ⌊3 4⌋ ⌊8 9 0⌋ l8 -4 0l ..................⌊6 7 1⌋ a) ACb) BAc) ABd) CD
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05/26/16

Pre Calculus
Determine the quadrant when the terminal side of the angle lies according to the following conditions: sin (t) < 0, csc (t) > 0.a) Quadrant Ib) Quadrant IVc) Quadrant IId) Quadrant III
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05/26/16

Pre Calculus
Find a unit vector in the same direction as the given vector: v = 3i + 4 j.a) u=3/25i+4/25j b) u=3/√7i+4/√7jc) Vector v = 3i + 4 j is a unit vector. d) u=3/5i+4/5j
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05/26/16

Pre Calculus
Find the projection of vector u onto vector v; projvu= ((u•v)/llvll2)vu = i – 5j and v = i + 5j a) -12/13i-60/13j b) 1/13i+5/13j c) 12/13i+60/13j d) -1/13-60/13j
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05/26/16

Pre Calculus
Use DeMoivre’s Theorem to find the power of the complex number and write your solution in the form, a + bi.a) −4 − 4i b) -4√2-4√2ic) −8 − 8i d) -2√2-2√2i
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05/26/16

Pre Calculus
Rewrite the given parametric equations in Cartesian form: x(t)=4-t   y(t)=3t+2 a) y=14-3x b) y=3x+2 c) y=x+4 d) y=4-x
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05/21/16

Pre Calculus
Find the exact value of the expression tan(7pi/12) a) 2(1+√3)-2 b) 2(1-√3)-2 c) -2(1+√3)-2 d) -2(1-√3)-2
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05/21/16

Pre Calculus
Use the given triangle to evaluate the trigonometric expression. The graph is a right triangle, the side on the y-axis =5 and the side o the x-axis =12. The hypotenuse is not given. sin(y/2)=? a)... more
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05/21/16

Pre Calculus
Find the value for cos(x/2) if the following conditions hold: sin(x)=-12/13  and x is in quadrant 3 a) -√17/6 b) -√7/24 c) -√7/6 d) -√17/24
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05/21/16

Pre Calculus
Simplify the expression  tan(1/2 x)+tan(1/8 x)  1-tan(1/2 x)tan(1/8 x) a) tan(-5x/8) b) tan(5x/8 c) tan(-3x/8) d) tan(3x/8)
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05/19/16

Use basic trigonometric identities to simplify the expression: 3sin^3 (x) csc(x) + cos^2 (x) + 2cos (-x) cos (x) = ?
Use basic trigonometric identities to simplify the expression: 3sin3 (x) csc(x) + cos2 (x) + 2cos (−x) cos (x) = ?a) 3b) sin2 (x)c) tan2 (x) + 1d) cos2 (x)
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05/19/16

-2i=5j+(3i+4j+(-(1/3)i+(5/2)j)
-2i=5j+(3i+4j+(-(1/3)i+(5/2)j) a) (14/3)i+(3/2)j b) (16/3)i+(13/2)j c) (2/3)i+(23/2)j d) (8/3)i+(13/2)j
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05/19/16

Find an equation for the parabola described by its vertex, directrix, and focus point:
Find an equation for the parabola described by its vertex, directrix, and focus point: vertex (√2, -√3), directrix x=2√2, focus (0, -√3)
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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
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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))  
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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 ⌋
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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
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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°
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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
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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
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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
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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  
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