08/07/19

Height of a Statue
A statue is mounted on top of a 42 foot hill. From the base of the hill to where you are standing is 73 feet and the statue subtends an angle of 10.3° to where you are standing. Find the height of... more
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07/31/19

Think book answer may be wrong

Hi, Our school course book is Understanding Pure Mathematics by Sadler and Thorning and we are asked to solve cot(2x) = -2/5 for which the book gives four answers: 55.9, 145.9, 235.9, and 325.9.... more
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07/15/19

Derive equation y=kx that cuts through a given circle. Which value is k?
Derive the equation y = kx for a straight line which cuts a 90 degrees arc of the circlex2 + y2 - 6x - 2y + 5 = 0The line goes through the origin.What is the value of k? The answer should have at... more
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07/02/19

If Cot A + Cot B + Cot C = √3. Then prove that triangle ABC must be equilateral
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06/29/19

Find the sum of the infinite series (-1 + (-3)^n) / 4^n from n =2 to infinity
Find the sum of the infinite series (-1 + (-3)n) / 4n starting from n = 2 all the way to infinity. I figured it would be a geometric series, but I am having trouble finding the ratio in order to... more
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06/27/19

IMPOSSIBLE QUESTION!!! I have the question in the link below.
https://docs.google.com/document/d/1-7UkQpvidcO4-gMiuDlPSLCV7AUchLWHWAt2D1P2xwM
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06/06/19

Given: circle k(O) m∠R = (12x+1) m FP = (11x+7) m PQ = 60 Find: m FP

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05/18/19

Geometry I NEED Help

Write the equation of the tangent line to the circle ( x - 2 )2 + ( y + 3 )2 = 25 at ( 6,0 )
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05/14/19

Geometry Tangent-Secant Question: Given:  OH ⊥BC, OB=10, OH=6, EF=9, AB=2 Find: AE.
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05/04/19

A rectangle has an area of 24cm. If it's length and width are whole numbers, what is the greatest possible perimeter?
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05/03/19

What are the maximum and minimum values of f(x) = x^2 e ^x + 4xe^x + 16?
1. Let f(x) = x 2 e x + 4xex + 16. (a) Determine the maximum and minimum values of f(x) and determine whether they are local or global max/mins. It may help to know that limx→∞ f(x) = ∞ and lim... more
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05/02/19

what numbers make 14 and when you subtract them make 6?
I am 9 and i have gotten alot of "which numbers make this number but when you subtract make this number" questions.
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05/01/19

find a positive number such that the sum of its squared and its inverse is minimal
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05/01/19

If cos²θ/ (cot²⁡θ-cos²⁡θ) = 3 and 0° < θ < 90°, then value of θ is?
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05/01/19

All lines with equation ax+by=c such that a, b, c form an arithmetic progression pass through a common point. What are the coordinates of that point?
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04/25/19

how do you explain how 1/2-4 is the correct answer for the questions: What is 4 less than half a number
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04/25/19

What is the range of the function defined by f(x)=x+2/x
What is the range of the function defined by f(x)=x+2/x :a) [2,+∞)b) (-∞,-2√2)∪(2√2,+∞)c) (-∞,+∞)d)( -∞,1)∪(1,+∞)please explain how to find range
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04/25/19

finding circumference
How can I find the circumference of a circle with an area of 66.5 in squared?
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04/24/19

algebra calculas
Consider the following system of equations.(a) Solve the system by elimination. (If there is no solution, enter NO SOLUTION. If the system is dependent, use a to represent any real number.)
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04/23/19

How do I solve 2^x +2^(1-X)=3?
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04/21/19

Volume question
An open box is to be made out of a 6-inch by 18-inch piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. Find the dimensions of the resulting box... more
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04/18/19

Y=x^2e^3x maximum value on (-2,0)
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04/16/19

Find the areas of the region bounded by y=sin^2x and y=1 between two consecutive intersections of these curves
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04/14/19

Help... extra practice

What is ?
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04/10/19

What is the area of the 25th rectangle? (Riemann Sum)
Suppose you estimate the area under the graph of f(x)=1/x from x=15 to x=115by adding the areas of rectangles as follows: partition the interval into 50 equal subintervals and use the left... more
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