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Pre Calculus
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How are the factors of a polynomial related to the x-intercepts of a polynomial? How do you find the x-intercepts given the
1 answer
asked by
Shonda
372 views
How does even multiplicity impact a graph?
3 answers
asked by
Deontre
421 views
Solve 2cos^2(2x)=1
I divided both sides by 2 and got this cos^2(2x)=1/2 But then I didn't know what to do after that... The part
1 answer
asked by
Chris
379 views
So I only have 3 homework questions left and I can't seem to figure out how to solve. I've tried solving them, but I keep
3 answers
asked by
Anonymous
488 views
He needs two adjacent rectangular enclosures - he has 300 feet of fencing.
a. find a function that models the total area of
2 answers
asked by
emily
570 views
Prove that the equation is an identity.
sec x/(sec x -tan x)=sec^2 x +sec x tan x
2 answers
asked by
Anonymous
1,086 views
Find an expression equivalent to sec theta tan theta/ sin theta.
1 answer
asked by
Victoria
367 views
Find the exact value of sin(1/2arcsin(-7/25))
1 answer
asked by
Mary
387 views
Write the rectangular equation in polar form... x=3
3 answers
asked by
Alexis
477 views
Solve the inequality sinx>square root x.
3 answers
asked by
Hanu
488 views
Determine an approximate solution to the inequality 2^x=x^2.
2 answers
asked by
Hanu
527 views
A motorboat travels 48 miles down a river in the same time it takes to travel 32 miles up the river. If the rate of the current
4 answers
asked by
Jody
1,294 views
e^-x sqrt(3e^2x -5/4) = e^x
No idea how to approach this.
1 answer
asked by
Anonymous
302 views
If f(x)=-4x^3 +5x^2 +8 and c=-2 is c a factor of x?(Use the Factor Theorem)
4 answers
asked by
Ashley
340 views
Using Descartes' Rule of Signs how can you determine the number of positive and negative zeros (roots) a polynomial may have?
3 answers
asked by
Ashley
550 views
The population of a city is 127,000 and is decreasing by 2.4% each year.
a. What will the population be in 10 years? b. Find when
3 answers
asked by
Brianna
463 views
You invest $4500 into an account that earns 6.5% interest compounded monthly. How long will it take for the account to double in
2 answers
asked by
Brianna
478 views
If a 25 mg sample of radioactive material decays to 18.4 mg in 5 years, how long will it take the sample to decay to 20.5 mg?
3 answers
asked by
Brianna
461 views
The logistic growth function P(t)= 160/ 1 + 9e^-0.165t describes the population of the endangered species of elk "t" years after
4 answers
asked by
Brianna
1,049 views
You have been hired by the Humane Society to construct six 2 by 3 animal cages using 1400 feet of chain fence. Express the
1 answer
asked by
Guillermo
390 views
At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectanglar prism whose
3 answers
asked by
Nadia
1,385 views
Approximate, to the nearest 0.01 radian, all angles theta in the interval [0,2pi) that satisfy the equation.
a.) sin
4 answers
asked by
Anonymous
2,636 views
Can someone help me with this problem?
Determine the number of positive integers less than 10,000 that can be formed from the
3 answers
asked by
Anonymous
394 views
a biologist has three salt solutions: some 5% solution, some 15% solution, and some 25% solution. She needs to mix some of each
2 answers
asked by
Jaden
802 views
In exercise 100, you are given the dollar value of a product in 2005 and the rate at which the value of the product is expected
3 answers
asked by
Emma
521 views
The doubling period of a baterial population is 10 minutes. At time t=80 minutes, the baterial population was 50000
1What was the
2 answers
asked by
Marina
645 views
A park has a circular walking path with a diameter of 250 meters.
a) Write the equation to describe the walking path in your
3 answers
asked by
Erika G.
813 views
The revenue and cost equations for a product are R=x (50-0.002x) and C= 12x+ 150000. Where R and C are measured in dollars and x
2 answers
asked by
Destiney
1,056 views
A cylinder shaped can needs to be constructed to hold 200 cubic centimeters of soup. The material for the sides
of the can costs
2 answers
asked by
Joey
1,023 views
The following table shows the rate of water flow (in L/min) through a dam.
t (min) 1 5 9 13 17 21 25 V'(t) (L/min) 6 6 2 2 3 6 2
2 answers
asked by
John
1,230 views
The number of new accounts opened at a credit union in the years 2001 to 2006 can be approximated by the model N(t)=
1 answer
asked by
Jessica
423 views
a. Identify the horizontal asymptotes of the function f(x)=x+6 / |x|+1
( / = divided by/over) b. Make a summary of how you may
1 answer
asked by
Jessica Maths
440 views
Write f(x) =x^3-11x^2+18x+32 in the form f(x)= (x-k) q (x) +r when k=6 + (square root)6, and demonstrate that f(k)=r
4 answers
asked by
Jessica Maths
349 views
Can you give me an example of properties of functions in a real life example?
1 answer
asked by
Jessica Maths
357 views
Assume that x, y, and a are positive numbers. Use the properties of logarithms to write the expression log a 9 xy in terms of
3 answers
asked by
Jessica Maths
1,083 views
Evaluate the function f(x) = log3 x at x =1/27 without using a calculator
a. –4 b. –2 c. 1/27 d. –3 e. 27
3 answers
asked by
Jessica Maths
2,262 views
Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 69 grams, how much will
2 answers
asked by
Jessica Maths
1,023 views
Simplify the expression. 9 log 9 2
This is 9 to the power of log base 9 of 2 a. 2 b. 18 c. 4 d. 9 e. none of these
1 answer
asked by
Jessica Maths
710 views
Simplify the expression. log3 36
a. 6 b. 36 c. 3 d. 18 e. none of these
1 answer
asked by
Jessica Maths
357 views
22. Solve the equation. 2x = 5
a. x = 0.5541 b. x = 5.8628 c. x = 2.3219 d. x = 1.4307 e. x = 1.6652
1 answer
asked by
Jessica Maths
275 views
Assume that x, y and a are positive numbers. Use the properties of logarithms to write the expression loga x ^6y ^7 in terms of
2 answers
asked by
Jessica Maths
832 views
Assume that x, y, and b are positive numbers. Use the properties of logarithms to write the expression logb ^8xy in terms of the
1 answer
asked by
Jessica Maths
853 views
17. population growing at an annual rate r will triple in a time t given by the formula t = ln 3/r If the growth rate remains
3 answers
asked by
Jessica Maths
1,458 views
16. Use a calculator to find a value for ln16.1 to four decimal places.
a. 2.7788 b. –2.7788 c. –1.2068 d. 5.0814 e. 1.2068
2 answers
asked by
Jessica Maths
491 views
Find the value of x. log4 65,536 = x
a. x = 32,768 b. x=8 c. x = 65,536 d. x=4
2 answers
asked by
Jessica Maths
921 views
Use a calculator to find the value for log0.94769 to four decimal places.
a. –0.0536 b. –0.9767 c. 0.9767 d. 0.0232 e.
3 answers
asked by
Jessica Maths
343 views
Write the equation 5^2= 25 in logarithmic form.
a. log255=2 b. log25=25 c. log52=25 d. log225=5 e. log525=2
2 answers
asked by
Jessica Maths
761 views
The population P of a culture of bacteria is described by the equation P = 1600e^0.052t
where t is time, in hours, relative to
4 answers
asked by
Jessica Maths
1,857 views
Determine the quadrant in which an angle, θ, lies if θ = 8π / 7
a. 3rd quadrant b. 1st quadrant c. 4th quadrant d. 2nd
3 answers
asked by
Amelia
2,006 views
Determine the quadrant in which a 130° angle lies.
a. 4th quadrant b. 1st quadrant c. 3rd quadrant d. 2nd quadrant
3 answers
asked by
Amelia
730 views
Determine two coterminal angles (one positive and one negative) for θ = −503°.
a. 217°,− 323° b. 217°, − 143° c.
4 answers
asked by
Jessica Maths
2,043 views
Use the sum-to-product formulas to find the exact value of the given expression.
sin 150° + sin 30°
3 answers
asked by
Jessica Maths
949 views
Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not
3 answers
asked by
Jessica Maths
2,058 views
Two forces with magnitudes of 150 and 75 pounds act on an object at angles of 30° and 150°, respectively. Find the direction
4 answers
asked by
maria
3,599 views
Am I correct? Please show me how if I am wrong
1.How many 6 digit numbers can be made using each of the digits {8,8,9,5,5,6}
4 answers
asked by
John
779 views
Find the 2 x 2 matrix A such that pmatrix{(-1,-1)(1 -1)} A = I, where I is the 2 x 2 identity matrix.
1 answer
asked by
Bob
378 views
Find all $2 \times 2$ matrices $\bold{A}$ that have the property that for any $2 \times 2$ matrix $\bold{B}$,
\[\bold{A} \bold{B}
3 answers
asked by
Bob
3,618 views
I have tried and tried to understand double angle identities but it just won't stick.
if sin x = -0.6 and 180 (degrees) < x < 270
2 answers
asked by
Kyrie
558 views
A 40-foot flagpole casts a 30-foot shadow. How do you Find o, the angle of elevation?
4 answers
asked by
Irene
2,252 views
What is the cubic formula?
How to use the cubic formula for the following equation? 0=144x^(3)-432x^(2)+315x-945
1 answer
asked by
Solanje Vernon
348 views
Find sin 2x if sinx=3/5 and x is in Quadrant II.
4 answers
asked by
Steve
1,568 views
If you were to plot all of these polar points, which would not be the same?
a) (2, 15pi/6) b) (2, pi/6) c) (-2, -5pi/6) d) (-2,
1 answer
asked by
Tim
355 views
Convert x+2y=5 to polar form
3 answers
asked by
Tim
918 views
Find an equation for the slope of the graph of y=(x^2)-2 at any point
1 answer
asked by
Tim
356 views
f(x)=(2x^2+5x-12)/(x^2-3x-28)
Is this function continuous at x=7? If not which condition does it fail?
1 answer
asked by
Helen
430 views
What's a function that has a vertical asymptote at x= -8 and x= 3 and a hole at (5,1/26)?
2 answers
asked by
Helen
898 views
Whats a function that has a hole at (6, 11), no horizontal asymptote and resembles the line y = 3x - 7.
1 answer
asked by
Norma
222 views
What is a function that has a hole at (5,7/8) and resembles the graph y=(x+2)/(x+3)?
1 answer
asked by
Norma
183 views
What is the standard form of a parabola given the vertices (1+3 sqrt 15 , -7) , (1-3 sqrt 15 , -7) and Endpoints of conjugate
1 answer
asked by
Mizzy
349 views
What is the standard form of a hyperbola given the vertices (1+3 sqrt 15 , -7) , (1-3 sqrt 15 , -7) and Endpoints of conjugate
1 answer
asked by
keith
359 views
What is the standard equation of a hyperbola given the vertices (7,-2) , (5,-2) and asymptotes " y= 11x - 68 " & " y= 11x + 64
3 answers
asked by
keith
1,081 views
What is the standard form of the hyperbola given the foci (6, 1+2 sqrt 58) , (6, 1-2 sqrt 58) and points of the hyperbola are 28
4 answers
asked by
keith
902 views
A tunnel has a shape of a semi ellipse that is feet at the center and 36 feet wide across at the base. At most how high should a
3 answers
asked by
Rose
1,687 views
Two ships leave a harbor at the same time. One ship travels on a bearing s11w at 16 miles per hour. The other ship travels on a
3 answers
asked by
Alan
505 views
theophylline, an asthma medicine, is to be prepared from an elixir with a drug concentration of 5mg/mL and a cherry-flavored
1 answer
asked by
Shannon
310 views
Use the given functions to find f(g(x)), and give the restrictions on x.
f(x) = 1 / (x-4) g(x) = (4/x) + 4 What are the
6 answers
asked by
A-Rod
385 views
Evaluate the expression 3f(2) - 3g(-4) for the given functions f and g?
f (x) = 5x - 2 g(x) = 5 - x^2
3 answers
asked by
Anonymous
343 views
Find the multiplicity of each zero of the function.
f(x) = (x+3)^2(x-4)^3 What is the multiplicity of the zero x= -3 What is the
3 answers
asked by
Anonymous
337 views
Not asking a question just trying to help others
3 answers
asked by
wooo
235 views
(Graph with line from (-5,0) to (7,2))
Find the direction angle of vector v to the nearest tenth of a degree. Equation editor
2 answers
asked by
Jake
551 views
Find the distance along an arc on the surface of Earth that subtends a central angle of 5 minutes (1 minute=160 degree). The
2 answers
asked by
Lauren
100 views
A box with a square base and no top is to be made from a square piece of carboard by cutting 2 in. squares from each corner and
1 answer
asked by
Anonymous
81 views
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