08/22/16

Evaluate this equation:
Arctan[tan(-120°)]
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08/21/16

Perform the indicated operation - Show Work Please! Thx
g(x) = 2x h(x) = x^2 + 4 Find g(h(2y))   Final Answer is meant to be 8y^2 + 8
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08/21/16

Red and blue paint is mixed to make brown in the ratio 4:7. If in a mixture I use 15cl more blue paint how much brown will i make in total?
Its about ratio and i am struggling on how to find the overall total of brown paint
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08/20/16

About 1/20 if the population of the world lives in South America. If about 1/35 of the population llives in Brazil, what fraction of the population of South Ame
I know that the answer is 1/700 because I corrected the paper and that was the correct answer.. but I'm not sure at all how to get that answer.      Original Question: About 1/20 if the... more
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08/17/16

How do you simplify using a single logarithm: log (A^3)- log (B^(2/3))+ log (A^(1/3)+ log (B^(5/3))
How do you simplify using a single logarithm: log (A3)− log (B2/3)+ log (A1/3)+ log (B5/3)
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08/17/16

How do I find the asymptote?
For question 18 on the algebra 2 common core test for June 2016 it says it's false that the graph of the equation c(x)=logBASE6x has an asymptote of y=0. I'm still confused how I would know this.
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08/17/16

L'hopitals rule
Use l'hopitals rule to solve: Lim as x approaches π/2 of sec3x/sec5x
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08/17/16

L'hopitals rule
Use l'hopitals rule to solve: Lim( as x approaches 0) of (1/x)-cotx
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08/17/16

Similar object is 3inches in diameter and 2 inches height and the other is 6 yards in diameter what is the height of the larger object in both inches and yards?
A can of tuna has a shape similar to the shape of a large water tank. The can of tuna has a diameter of 3 inches and a height of 2 inches. The water tank has a diameter of 6 yards. What is the... more
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08/16/16

Rationalize the equation cubed root of 40/9
Rationalize the denominator of the cubed root of 40/9
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08/08/16

Find the area of triangle
Find the area of triangle formed by joining centres of 3 circles of radius 6cm,14cm,15cm
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08/07/16

Linear Algebra and Matrices
Let V = {(x, y)|x ∈ R, y ∈ R, y > 0}, define addition and scalar multiplication on V by(x, y) + (z, w) = (x + z, yw), and a(x, y) = (ax, ya)Is V a vector space over R with these operations?... more
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08/06/16

Find the length of the chord PQ .
P and Q are both points on the unit circle. The standard angle of P is 45 degrees and the standard angle of Q is 150 degrees. Find the length of the chord PQ. Round answer to 2 decimal places.
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08/04/16

Write an equation for an ellipse.
Write an equation for the given ellipse that satisfies the following conditions. Center at (4,1); minor axis vertical, with length 8; c=3.
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08/04/16

Trig Help???
1. The graph of f(x)=abx with a > 0 and b > 0 has initial value ______.
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08/04/16

Mixture Word Problem
How much fresh water should be mixed to a 30% salt water solution, to obtain 90 gallons of a 23% salt water solution?
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08/03/16

Calculus 3 Proof
Prove that the vector n=ai+bj+ck is perpendicular to the plane A: ax+by+cz=d by showing that n is perpendicular to PQ for any two points P(x1,y1,z1) and Q(x2,y2,z2) in A. 
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08/02/16

Multiply and simplify
assume that no radicands were formed by raising negative numbers to even powers.    √3x^5√18x^6
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08/02/16

Use y=ux to solve
Use the substitution y=ux to solve dy/dx=y/x–(x/y)e^(y²/x²)
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08/01/16

What is the answer?
Give all values as exact, simplified values. No decimal approximations, show all work. 1a. Find an equation for the set of points that are distance of 5 units from (10,8). 1b. Name 6 specific... more
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07/31/16

Find the distance between the points with polar coordinates (1,pi/6) and (3,3pi/4).
please help
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07/28/16

Integration
integrate ∫ 4x(x-1) / (2x-1)2
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07/24/16

More questions...
By dividing both sides by the coefficient of x squared, solve the quadratic questions:   2x squared = 8   I tried this a few times but always get the wrong answer. Please explain this and... more
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07/21/16

How to know which approximation is right without calculating the riemann sum?
the integral is from 0 to pi/2 of cos^5(X). One group says 1.6 another says 0 and another says 8/15. How do I know which one is accurate without making any calculations?
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07/18/16

Determine the cube root of 27(cos(7pi/6)+i sin (7pi/6)).There is more then one answer.
Determine the cube root of 27(cos(7pi/6)+i sin (7pi/6)). There is more then one answer.
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