11/15/18

trigonometry equation

Solve for x in terms of y: y=cot2xLooks like a simple equation, but I've been racking my brain trying to figure it out.Thanks!
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11/15/18

m = undefined and (-3, -5)
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11/14/18

Help on math please

A recipe for trail mix uses 7 ounces of almonds with 5 ounces of raisins. (Almonds and raisins are the only ingredients.) How many ounces of almonds would be in a one-pound bag of this trail mix?... more
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11/14/18

Trigonometric identities: sometimes, always, never
My teacher today told us that sin2x-cos2x=1 is sometimes true. I thought it would be never true because it’s not equivalent to sin2x+cos2x=1. Could someone explain why this it is sometimes true?
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11/14/18

Height of A Baseball
A baseball is propelled upward with a speed of 64 feet per second from a height of 5 feet. For how many seconds is the ball higher than 53 feet?
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10/30/18

The length of a rectangle is equal to triple the width. Which system of equations can be used to find the dimensions of the rectangle if the perimeter is 86 centimeters?
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10/30/18

Writing a minimum degree polynomial given roots

Write a polynomial function of least degree with integral coefficients the zeros of which include 4 and 1-i.I understand that the opposite of 1-i is implied do to it being imaginary, but do not... more
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10/19/18

Carmen must choose a number between 49 and 95 that is a multiple of 3, 2 and 9
I don’t understand how to do this
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10/13/18

Determining how to find the total amount of degrees in a shape. Please find the rules for calculating angle totals in Quadrilaterals and Triangles.
PLZ I NEED IT TODAY AS FAST AS POSSIBLE
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10/13/18

cosx/1-sinx + 1-sinx/cosx = 2/cosx
cosx/1-sinx + 1-sinx/cosx = 2/cosx
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09/28/18

Find an equation for the line perpendicular to the line 6x−6y=5 having the same y-intercept as −8x+9y=10.
 how to i solve this equation? Ive gotten them into y=mx+b form
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09/28/18

How does this make sense?
Why does 0! = 1?
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09/28/18

The length of the base of a triangle is twice its height. If the area of the triangle is 361 square​ kilometers, find the height.
The length of the base of a triangle is twice its height. If the area of the triangle is 361 square kilometers, find the height.
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09/28/18

y = −8x^4 + 18x + 900 End behavior: y →? as x → ∞, y →? as x → −∞
Need help finding the end behavior.
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09/28/18

y = x^3 − 3x^2 + 8x − 12 End behavior: y →? as x → ∞ , y →? as x → −∞
Need help finding the end behavior.
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09/28/18

Determine the end behavior of P. P(x) = 2x^3 − x^2 + 4x + 4. y →? as x → ∞ , y → ? as x → −∞
Need help d=finding the end behavior.
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09/28/18

Determine the end behavior of P. P(x) = x^4 − 6x^2 + 9x + 5. y → ? as x → ∞ , y →?as x → −∞
Need help finding the End Behavior.
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09/28/18

Determine the maximum number of real zeros and the maximum number of turning points for the function f(x) = 5x^3 – 4 + x – 7x^6 .
Need help determining what the max. of real zeros is and the turning point.
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09/28/18

Pre calculus question !!!
Given two lines   L1：x + ay + b = 0   and   L2：x + cy + d = 0   as detailed below : details:   1.  L1 and L2 cross each other in the section 1 of the Cartesian coordinate system.2.  L1 crosses the... more
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09/28/18

Pre calculus question !!!
The vertices of a triangle ΔABC are A( p,q) , B(r, s) ,C(u, v) . Assume that these coordinates satisfy 2p+3r+4u=0   ,  2q + 3s + 4v=0     , and the origin O(0,0) lies in the interior of ΔABC . If... more
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09/28/18

Pre calculus question !!!
In a triangle ΔABC , it is known that AB =10 , AC = 9 , cos 3\8 ∠BAC = . Points P, Q on sides AB , AC such that the area of ΔAPQ is half of the area of ΔABC . For all points P, Q satisfying the... more
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09/22/18

Describe a situation that can be represented by the algebraic expression 6b+w
Be sure to tell what quantities are represented by the variables b and w  
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09/22/18

From a point 87 feet from the base of a tree, the angle of elevation is 53 degrees. The distance from the tree is how many feet?
I need to know the distance from the standing point to the top of the tree.
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09/22/18

Determine the piecewise representation of​ f(x) below:
f(x)= |5x-5|   f(x)= equation A  if x >= a          equation  B  if x< b whats Equation A=?  whats equation B=?               a=?                b=?
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09/22/18

Consider the two functions given​ below: dentify the domain of (f) x/ (g) ( x)
f(x) = x^2 8x +15, g(x)= x^2+ 1x - 12
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