479 Answered Questions for the topic Precalculus Homework

Precalculus Homework Math Precalculus 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
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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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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Precalculus Homework Math Precalculus Pre Calculus

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, ∞)  
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Precalculus Homework Math Precalculus Pre Calculus

05/16/16

Pre Calculus
Given the equation of an ellipse, identify the center point: 4x2 + 40x + 25y2 - 100y + 100 = 0
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Precalculus Homework Math Precalculus Pre Calculus

05/16/16

Pre Calculus
Given the vectors, a = 3i + 4j, b = -2i + 5j, c = 10i -j, find a + (b - c) = ?
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Precalculus Homework

04/27/16

A woman owns 21 pets. Each of her pets is either a bird or a dog. If her pets have a total of 76 legs, how many birds and how many dogs does she have?
This is probably a fairly easy problem. Please help!
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Precalculus Homework

04/24/16

Precalc Homework Question help!
Find all solutions in [0,2pi) :   sin(2t)-sin(t)=0
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Precalculus Homework

04/24/16

Precalc Math HW help please!
Consider the equation cos(3.10t)=.3. Find the smallest positive solutions in radians and round your answer to 4 decimals.
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Precalculus Homework Calculus

04/14/16

How many different sums of money can you make with a penny, a dime, a one-dollar coin, and a two-dollar coin?
I'm having trouble with this question
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Precalculus Homework Precalculus Pre Calculus

04/10/16

how many of these choices is right?
The angle measure,θ, in radians is ...-found by multiplying two rays of length r meters by a distance of s meters.-the openness of two rays, r meters long compared to the circumference in... more
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03/28/16

How can i find b?
A 43 mg of a vaccine is given to a patient to prevent measles. The vaccine leaves the body at a rate of5.2% per hour. b-The number of milligrams of vaccine in the body after h days is how many... more
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Precalculus Homework

03/19/16

Positive/negative angle
Assume the following angle is in standard position. Fnd a positive and negative whose absolute value is less then 360 degrees and is coterminal with the given angle:-485 degrees
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Precalculus Homework

03/08/16

find the time required for an investigation of 1 dollars to grow to 6500 dollars at an interest rate of 7.5 percent per year, compounded quarterly
find the time required for an investigation of 1 dollars to grow to 6500 dollars at an interest rate of 7.5 percent per year, compounded quarterly  
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03/05/16

Quadratic word problem?! PRECALCULUS PLEASE HELP!??
I have tried over and over again and I keep getting the wrong answer!The demand equation for a certain product is given by p=122−0.035x , where p is the unit price (in dollars) of the product and x... more
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03/01/16

Precalc? Determining the area of a rectangle given its perimeter? PLEASE HELP!!?
The length of a rectangular garden is 8 feet longer than its width. If the garden's perimeter is 188 feet, what is the area of the garden in square feet?       I am really stuck on this and I... more
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03/01/16

Precalc question? Determining the dimensions of a rectangle given the area?? PLEASE HELP!!?
I am really stuck on this and I have not used the Pythagorean Theorem in ages. Could you please explain how you solve this as you go? Thank you for the help! I really appreciate it!   The width... more
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Precalculus Homework Precalculus

02/28/16

in details please
John inserts a partially used battery into a portable electric fan. The percent of the battery’s total charge changes at a constant rate of – 2.4 % per minute as the fan is used. When the fan has... more
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02/28/16

Exponential Growth Problem Involving bacteria population??! PLEASE HELP!!! - Precalculus
I am really stuck on this question, particularly questions 3 and 4. Could you please show how you get the answers to those questions and explain? I have been stuck on those for a while and would... more
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