2,195 Answered Questions for the topic Pre Calculus

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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07/19/21

Please help. Calculus question.
. If a is a Quadrant IV angle with cos(a)=√5/5 and sin(ß)=√10/10 where pi/2 ‹ß‹pi, finda. cos(a+B)b. sin(a+B)c. Tan(a+B)
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Pre Calculus

07/18/21

Pre Cal question

Find all solutions; [0,2pi) with equation 2cos(x)-sin(2x)=0
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Pre Calculus Calculus Precalculus

07/17/21

find the number of terms please help
For the series below calculate find the number of terms n that must be added in order to find the sum to the indicated accuracy.∞∑n=1 (−1)^n(2) / n^0.8)|error| < 0.01
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Pre Calculus Precalculus Algebra

07/17/21

Write an equation that expresses the statement. (Use k as the constant of proportionality.) z is proportional to the square root of x.
"Write an equation that expresses the statement. (Use k as the constant of proportionality.)z is proportional to the square root of x."
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Pre Calculus Calculus Precalculus

07/13/21

find the area under the curve
Find the area under the curve y=1.5x^(−2.5) from x=7 to  x=t and evaluate it for t=10, t=10. Then find the total area under this curve for x≥7.(1.) t = 10  (2.) t = 100(3.) total areaplease show me... more
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Pre Calculus Calculus Precalculus

07/12/21

trig substitution for an interval
evaluate the integral: 26(sqrt(x^2 - 25)) / (x^4) dxthe trig substitution for this is: 5sec(theta)1. Which integral do you obtain after substituting for x and simplifying?2. What is the value of... more
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Pre Calculus Calculus Precalculus

07/12/21

INDEFINITE INTEGRAL
Use the substitution x=2tan(θ) to evaluate the indefinite integral ∫ (31dx) / ((x^2)sqrt(x^2+4))
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Pre Calculus Calculus

07/10/21

Find the rate of the revunie given a function and a point:
The monthly revenue function for a company is: R(x) = 1000x(-0.25x^2+7.5x+18.75)The revenue is in dollars, where x represents the number of thousands of products produced. This revenue model... more
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07/09/21

find the converge value for this sequence
Given the sequence a_n = sin(2n) / (n^5 + 4)this sequence converges, what value does this sequence converge to?
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07/09/21

find the following sequence
For the sequence defined by:a_1=3a_n+1= 3/a_n + 3Find:a2 =   a3 = a4 = 
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Pre Calculus Calculus Precalculus

07/09/21

find the area under the curve
Find the area under the curve y = 1.5x − 2.5 from x = 7 to x = t and evaluate it for t = 10, t = 100. Then find the total area under this curve for x ≥ 7.(a) t = 10  (b) t = 100  (c) Total area
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Pre Calculus Calculus Precalculus

07/09/21

evaluate the integral
evaluate the integral: (16x^2)/(sqrt(49-x^2))the trig substitution for this is: 7sin(theta)a. Which integral do you obtain after substituting for x and simplifying?b. What is the value of the above... more
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Pre Calculus Sat Math

07/08/21

A  man went off-roading in his Jeep. 50 miles after leaving the highway, he turned left, creating an angle of 105° between the two paths. After another 50 miles he reached the highway again.
How much of the highway did he bypass? 105°Round to the nearest hundredth of a mile. He bypassed approximately __?__  miles.
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Pre Calculus Math Calculus Precalculus

07/02/21

A police car is located 70 feet to the side of a straight road. A red car is driving along the road in the direction of the police car and is 160 feet up the road from the location of the police car.
A police car is located 70 feet to the side of a straight road. A red car is driving along the road in the direction of the police car and is 160 feet up the road from the location of the police... more
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Pre Calculus Math Calculus Precalculus

07/02/21

A circle is inside a square. The radius of the circle is increasing at a rate of 2 meters per hour and the sides of the square are decreasing at a rate of 4 meters per hour.
A circle is inside a square. The radius of the circle is increasing at a rate of 2 meters per hour and the sides of the square are decreasing at a rate of 4 meters per hour. When the radius is 5... more
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Pre Calculus Math Calculus Precalculus

07/01/21

solving question
A spherical balloon is inflated with gas at a rate of 900 cubic centimeters per minute.(a)Find the rates of change of the radius... more
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Pre Calculus Math Calculus Precalculus

07/01/21

solving question

A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second.(a) What is the velocity of the top of the ladder... more
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Pre Calculus

06/30/21

f(x)= 1/x, g(x)= x^2 + 2x -5 find (g-f)(x)
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Pre Calculus

06/28/21

Quadratic function

The quadrate function f (x ) has vertex (1.8, 21); f(x) = A * x ^ 2 + 14.4x + c what are numerical values of A and C
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06/27/21

Given the function f( x ) = 4x + 1 evaluate and simplify the expressions below. See special instructions on how to enter your answers.
Given the function f( x ) = 4x + 1 evaluate and simplify the expressions below. See special instructions on how to enter your answers.f (a)=____f (a+h)=___f(a+h). - f(a)/h =______Simplify answers... more
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Pre Calculus Precalculus

06/26/21

What is the answer help me please
Find the length s of the arc that subtends a central angle of measure 2 rad in a circle of radius 3 cm. S= ???cm
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Pre Calculus Math Prealgebra

06/26/21

At a local baseball game, the concession stand has two different meal choices.

At a local baseball game, the concession stand has two different meal choices. You can get 8 hotdogs and 5 drinks for $15.50 or you can get 3 hotdogs and 7 drinks for $13.50. If the price of... more
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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 Precalculus

06/15/21

Given the function f(x)=x^3−6x^2+x+4, determine all coordinate points (x,y) on the graph of f such that the line tangent to fat (x,y) has a slope of 1.
Given the function f(x)=x^3−6x^2+x+4, determine all coordinate points (x,y) on the graph of f such that the line tangent to fat (x,y) has a slope of 1.
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