1,063 Answered Questions for the topic Pre-Calculus

07/20/21

Pre-Calculus Question. Please Help!
 Kate has 12 different types of flowers but she wants to make a floral arrangement with only 9 of them. How many possible flower arrangements are there?
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07/20/21

Calculus Question. Please Help!
Given the following system of equations,a) build an augmented matrix to represent the system of equations,b) show the elementary row operations that lead to a reduced row form, andc) find the... more
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07/20/21

Pre-Calculus Question. Please Help!
Convert the following Cartesian equation into a polar equation.If you need to include the symbol θ in your answer, use the word "theta" instead.y = 4x +5
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Pre Calculus

07/13/21

If tan ( x ) = 29 /2 (in Quadrant-I), find sin ( 2 x ) =
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Pre Calculus

06/22/21

Question for my pre-calculus class
Use the point-slope formula to write an equation of the line that passes through , (2−3) and (-6,1)in slope intercept form
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Pre Calculus Math Precalculus Algebra

06/21/21

So i got this question on my assignment about matrix it says that i have to proof one of the matrix properties

Assume A is a 3 x 3 matrix with |A| ≠ 0. Show that A-1XA = I , by using your own example.I've tried using some random numbers but it seems that it doesn't work, so there must be some rules to proof... more
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Pre Calculus Math Algebra 2 Precalculus

06/10/21

If f(x) = 3x-8, what is f^-1(-4)
I was given the following Piecewise function:f(x) = 3x-18, x<0f(x) = x2-8, 0≤x<3f(x) = (x-2)3, x≥3And I was asked:What is f -1(-4)It was multiple choice. The given answers were:A: -20B: 3/4C:... more
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Pre Calculus Math Algebra 1 Algebra 2

06/10/21

look i am desperate. please someone ACTUALLY help me with my math homework please??
Determine whether the given sequence could be geometric, arithmetic, or neither. If possible, identify either the common ratio or the common difference.4, 2, 1, 1/2, ....  A.) geometric; r = 2B.)... more
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06/07/21

Suppose sin(theta)= m where 0° Is Less than or equal to theta and less than or equal to 90°. Write an expression for each of the following in terms of “m”
 a) sin(theta) = ?                           b) cos(theta) = ?    
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Pre Calculus

06/05/21

Trigonometry question
Prove the identity. Cot(2x)=1-tan^2(x)/2tan(x)
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Pre Calculus Trigonometry Unit Circle

05/18/21

Let (-2,-3) be a point on the terminal side of θ. Find the exact values of cosθ, cscθ, and tanθ.
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Pre Calculus

05/17/21

Use Identities to find the value of each expression.
Find Cos theta and sec theta if tan theta equals -2 and sin theta is greater than zero.
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Pre Calculus

05/14/21

Cos A =4/5(A in quadrant 4) and Sin B=2/3 (B in quadrant 2)
Using the equation above I need to find Sin B-A and cos B/2
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Pre Calculus Math Precalculus Statistics

05/10/21

Recall the equation for a circle with center ( h , k ) and radius r

Recall the equation for a circle with center (h,k) and radius r. At what point in the first quadrant does the line with equation y=2x+2 intersect the circle with radius 3 and center (0, 2)?x = y = 
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Pre Calculus

05/10/21

Below is the graph of a parabola with its vertex and another point on the parabola labeled. Write an equation of the parabola. The points are (-3,5) and (2,-5)
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Pre Calculus

05/09/21

Math Workbook Question
Two forces of 100 lbs and 120 lbs are acting on an object. The angle between the two forces is 50 degrees. What is the magnitude of the resultant? Round your answer to the nearest tenth if necessary.
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Pre Calculus Math Precalculus

05/07/21

Convert the rectangular equation x^2 +(y+2)^2 =4 to a polar equation
Please help me with a step by step so I can find my mistake thank you
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05/07/21

Write an equivalent expressions for 8cos^4 (x) that does not contain powers of trigonometric functions greater than 1
Please help me with this question
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Pre Calculus Precalculus Pre Calculus

05/06/21

Can someone please answer this for me, I have been trying to work it out but I get an incorrect answer. Thank you
An object is objected to two forces: f1=112 lbs at 231degrees from the north clockwise and f2=108 lbs at N 16degrees W .. I have to find the components of F1 and write in standard form, using i and... more
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Pre Calculus Trigonometry

05/06/21

What is the altitude of the plane?
A plane approaches an airport runway. The runway is 9000ft long. The pilot sights the start of the runaway at an 18.8° angle of depression, and the end of the runway at a 17.5° angle of depression.... more
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Pre Calculus Math Precalculus Algebra

05/04/21

Given tan 𝜃 = 5/4 and 𝜋 < 𝜃 < 3𝜋/2 Find the exact value of cos 𝜃/2
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Pre Calculus Math Precalculus Algebra

05/04/21

Find all solutions in [0,2𝜋) cos 4𝑥 = − √2/2
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Pre Calculus Math Precalculus Algebra

05/04/21

Verify: (sin 𝑥/cosx+1) + (cos 𝑥−1/sinx) = 0
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Pre Calculus Math Algebra 1 Precalculus

05/04/21

Write an equivalent expression for 6 sin^4 𝑥 that does not contain powers of trigonometric functions greater than 1
the x is not raised to the power of 6
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Pre Calculus Math Precalculus

04/30/21

Solve this problem please
Given that sin u = −2/5 , u in quadrant III, and cos v = 3/4 , v in quadrant IV, find the exact value of sin(u + v).
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