# pre-calculas

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### pre -calculas

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### pre-calculas

Can someone please help me?

### pre-calculas

rationalize the denominator: 5 + the sq. rt. of 3 ________________________ 4 + the sq. rt. of 3

### Pre Calculas

verify the following 1+1/csc^2x-1=sec^2x

### pre-calculas

Use "completing the square" to find the zeros of the polynomial. =2x squared + 6x + 5 = 0

### pre-calculas

find the LCD and solve: x+3 12x + 4 1 - 2x ____ + _________ = _______ 3-x x squared - 9 x + 3

### Pre Calculas

Need help Give an example of an exponential function that goes through the point (0,4) .

### Pre Calculas

how would you varify the following sinx+sinx cot^2x=cscx

### pre-calculas

what is the function whose graph is the graph of y=ã+4, but is reflected about the the x-axis. y=

### pre-calculas

write a function whose graph is the graph of y=x^2, but is shifted to the left 6 units.

### pre-calculas

simplify the following complex fraction: x ____ -2 x-5 _____________________________________ x squared - 9x - 10 ____________________ x squared - 25

### Pre-Calculas

I a lighthouse is 75 feet tall and boat is out at sea 40 min away, how far is the boaat from the lighthouse. I'm stump on this problem..Help!

### Pre Calculas

A man who can row in still water at 3 mph heads directly across a river flowing at 7 mph. At what speed does he drift downstream?

### Pre Calculas

Im having a little trouble help please? 1.Given the table below, evaluate the following: x -3 -2 -1 0 1 2 3 4 5 f(x) 10 20 30 40 50 60 70 80 90 g(x) -1 -2 -3 -4 -5 -6 -7 -8 -9 a. (3f+2g(1) b. (fog)(-1) 2. Express the following function, H(x) as a composition of two functions f...

### Pre-calculas Math

how to find the exact value of: cos(9*pi/12)*cos(5*pi/12)+sin(9*pi/12)*sin(5*pi/12)

### pre-calculas

Find the function that is finally graphed after following transformations are applied to the graph of y=ãx in the order list 1. shift down 8 units 2. reflect the x-axis 3. reflect the y-axis

### pre-calculas

Find the slant asymptote, if any, of the rational function. Do not graph the function. (Enter your answers as a comma-separated list of equations. If an answer does not exist, enter DNE.) f(x) = x2 − 2x + 15 _____________ x + 7

### Pre Calculas

If you deposit $5,000 in an account that pays 5% interest compounded annually, how much money will you have in your account at the end of 15 years? Write an exponential function that represents this situation. I got 1,500,000 but im not sure if i did it right and im stuck

### Pre-Calculas

The voltage E of an alternating current electrical circuit can be represented by the sinusoidal function E = 220 cos( t), where E is the measured in volts and t is measured in seconds. How long does it take the alternating current to complete one full cycle?

### Pre Calculas

True or false (logx)^2=2logx True or false in56/in7=in8 i got true for the first one and false on the second im sorry for posting today but i just need someone to check

### Math, Pre-calculas

From each corner of a square piece of cardboard, a square with sides of 3cm is removed. The edges are then up to form an open box. If the box is to hold 243cm^3, what are the dimensions of the original piece of cardboard?

### Pre-calculas

A conical tank of radius R=19 feet and height of H=16 feet is being filled with water at a rate of 9ft 3 /min . (a) Express the height h of the water in the tank, in feet, as a function of time t in minutes

### Pre-Calculas 11

a farmer wants to build two pens (one for cows, the other for horses) on land by a straight road. There is already a fence along the road and the farmer has 800m of fencing to build his fence to enclose the pens and separate them as shown in the diagram below. what is the ...

### Pre Calculas

A GARDENER HAS 60' of edging. She wants to use it to enclose a 120 square foot rectangular area. She does not have to use up all of the edging. what are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: if the length of the ...

### Pre-calculas

The function C(x)=x2−4x+28 models the cost, in hundreds of dollars, to produce x thousand pens. Find the total cost to produce 36,000, 139,000, and 222,000 pens. (a) Cost to produce 36,000 pens is?

### pre-calculas

can someone please help me with this question? Given the function f(x)=3x-9 Find the rate of the change between the stated values for x: 7 to 8 A. Find the equation of a secant line containg the given point (7,f,(7)) and (8,f,8)) B. Find the rate of change between the stated ...

### Pre-calculas

Boat A leaves a dock headed due east at 1:00 PM traveling at a speed of 16 mi/hr. At 2:00 PM, Boat B leaves the same dock traveling due north at a speed of 18 mi/hr. Find an equation that represents the distance d in miles between the boats and any time t in hours for t≥...

### calculas

If f(x)=3x-1 and g(x)=2/3x+2 find: a) f(-3)+g(6) b)f(3)-g(2)

### ap calculas

derivative of (-x^3+3)(3x+2)^3

### Calculas

(6x^3-8x^2-6x)/(3-11x-8x^3)

### pre-calculas

An object is situated so that its center of mass is located at the origin.Three forces X,Y, and Z act on the object at the same time. Force X passes through the point (-3, -4), forve Y passes through the point (5,-12), and force Z passes throught the point (15,8). Forces X,Y, ...

### calculas

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1

### calculas

f(x)=ln[(1+e^2x)/(e^2x-4) find the derivative

### ap calculas

derivative of (2x^3+5)cos2x^5

### calculas

If f(t) = square root of 7/t^5. Find f'(x) and f'(2)

### Calculas

Find the length of the curve y=ã(2x), from x=1 to x=4.

### Calculas

area between the curves y=4-x^2 and y=x-8

### Calculas

Evaluate the definite integral. S4 (-3x+4) dx 1

### Calculas

Horizantal limit of (6x^3-8x^2-6x)/(3-11x-8x^3)

### AP Calculas

Does f(x)=(2x^3-2x)/x^3+x^2-4x-4 have any horizontal asymptotes? How can you tell?

### Calculas

find the compute derivative of f(x)=sinh^2(5x)

### calculas

Please help don't understand how to solve it. 3xy-6x+2y^2 dx/dt=-6 x=2 y=-3 thank you

### Calculas

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1 please show your steps

### calculas

The function f(x)= (8x-7)e^2x has one critical number. Find it

### CALCULAS

POLAR EQUATION OF INWARDLY SPIRALING SPIRAL

### calculas

let p=(1,1,1), Q=(2,3 5), and R=(-1,3,1). find the area A of thr triangle with vertices P,Q, and R

### calculas

Solve following equations ¡¼tan¡½^(2 ) x-5tanx=-6

### Calculas

Integrate: Cos^7(2x) Explanation would be helpful

### calculas

Differentiate the explict funtion of 9x^2 + 64y^2 = 576

### Calculas

F(X)=9 csc6(X) it is continous from -infity to infinity except what value?

### calculas

Write following equations in polar coordinate then graph them Y=4X

### Calculas

Find the area of the region under the curve y = 12 e ^{3 x} between x = -2.6 to x =2.6

### Calculas

W= [ a , a+b ] (2x2 matrix) a-b , b a, b are element of R Show that W is a Subspace of M22?

### Calculas

lim (x⁻¹-1)⁄x-1 as x approaches 1. I know the answer is -1 but I am not sure how to solve the numerator x⁻¹-1.

### Calculas

Compute the absolute and relative errors in using c to approximate x. x=e; c=2.74

### calculas

Question # 01 Solve the inequality and sketch the solution on a coordinate line.

### Calculas

I stumble a question I cannot answer please help up. Find value of limit k for equation:

### Calculas

find the tangent line of the following function Y=2sinx + sinx^2 at the points Pi/6,5/4

### Pre Calculas

7. For the function defined by: f(x)= {x^2, x<=1} {2x+1, x>1} a. evaluate f(0) 8. Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices. 3x-y=0 5x+2y=22 9. Solve the following system of equations algebraically...

### Calculas-Differentiation

The gradient of the tangent to a curve y=ax^2+bx at the point (2,8)is the parallel to x-axis. Find the values of a and b.

### Pre Calculas

Complete the identity sin theta / cos theta + cos theta / sin theta = ? Do you mean (sin theta/cos theta) + (cos theta/sin theta) ? That would equal tan x + cot x = tan x + (1/tan x) = (tan^2 x + 1)/ tan x I don't see any way to further simplify it. 1/(cosx)(sinx) or sin^2x+...

### Calculas

Use the derivative of sinx and cosx to develop the derivatives of y=secx and y=tanx? Help would be much appreciated

### calculas

Find the volume of the solid that is obtained when the region under the curve y=©ø¡îx+3 over the interval [5, 24] is revolved about x-axis.

### math- 165 calculas

Find the horizontal asymptote of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = 5x^2 + 1/ 7x^3 − 2x^2 + 5

### Calculas

Find any critical numbers of the function. (Enter your answers as a comma-separated list.) g(t) = t sqrt6 − t , t < 13/3 I don't even know how to start out!

### maths calculas part

A man who has 144m of fencing material wishes to enclose a rectangular garden.Find the maximum area he encloses

### Applied calculas

Let y=〖tan〗^(-1) x Rewrite it as an equation involving a trig function. Use implicit differentiation to determine an expression for y.

### calculas

Find the equations for the tangent line and normal line to the curve for f(x)=(x^4)+(2e^x) at the point (0,2)?

### Math ( calculas)

find the intervals on which the curve y=x/(x+1)^2 is concave upward or concave downward.

### calculas

Consider the function f(x) = 7 xe^{-7.5 x}, 0<_x<_2. This function has an absolute minimum value equal to: which is attained at x=

### Calculas

Can someone walk me through the following questions: Partial Derivatives f(x,y) = x^7 -8y -3 find x and y f(x,y) = 7 / 5x + 4y, find x and y

### Calculas

what is the velocity (in ft/s) of a sandbag 2.75 s after it is released from a hot-air balloon that is stationary in the air?

### Calculas

The slope of the tangent line to the graph of a function, h(t) is 7/2t The function passes through the point (5,3) Find h(4)

### Calculas-Differentiation

Find the equation of the tangent to the curve y=1/2x^2-4x-3at the point where the curve intersects the y-axis.

### Calculas

Evaluate lim x→0 10x/√(9+x)-√(9-x)

### calculas

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

### calculas

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

### calculas

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

### differential calculas

Find the instantaneous velocity and acceleration at the given time for the straight-line motion described by the equation: s= (t+2)^4- (t+2)^(-2) at t=1 Round to one decimal place.

### Calculas

Can someone please walk me through the steps for the following Partial derivatives problems: f(x,y) = x^7 - 8y - 3, find x and y f(x,y) = 7 / 5x+4y, find x and y

### high school calculas

Find the (a) the local extrema, (b) the intervals on which the function is increasing, (c) the interval on which the function is decreasing h(x)=2/x

### Calculas

I stumble a question I cannot answer please help up. Find value of lower and upper limit of k for equation: (3x^3-5)/x^2 dx = 10 limit: -k , k

### Calculas

Given f(x)=x^3−2x+5/x+4 and f′(3)=a/b, where a and b are coprime positive integers, what is the value of a+b? Details and assumptions f′(x) denotes the derivative of f(x).

### calculas

Suppose that the box height is h = 2 in. and that it is constructed using 193 \text{in.}^2 of cardboard (i.e., AB = 193). Which values A and B maximize the volume?

### math- 165 calculas

Find the horizontal asymptote of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = x^3 − 3x^2 + 5x + 1/ x^2 − 5x + 3

### calculas,math

A cylindrical can is made from tin.If it can be contain liquid inside it then what is the parameter of design if we are oblige use the minimum amount of tin.

### pre-algebra

kk my teach told me to describe and draw things that are about pre-algebra and she told me to write what pre-algebra is... so can anyone help me??

### calculas 1

Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. (Enter your answers as a comma-separated list.) f(x) = x^9, [0, 9]

### differential calculas

The angular displacement in radians is given by: θ=8√(t^2+2) Find the angular velocity and angular acceleration at t = 0.25 s

### Calculas

Johnny is designing a rectangular poster to contain 15 in^2 of printing with a 5-in margin at the top and bottom and a 3-in margin at each side. What overall dimensions will minimize the amount of paper used?

### Calculas

Suppose that the radius r of a right circular cone of fixed height h = 30 cm is increasing at a rate 10 cm/s. How fast is the volume increasing when r = 15? Give your answer correct to two decimal places.

### calculas

A car braked at a constant deceleration of 45 ft / s2, producing a skid mark measuring 105 feet before coming to a stop. How fast was the car travelling when the brakes were first applied?

### Calculas

The profit obtained when x barbecues are sold is P(x) = 100 x − 3x^2 (lnx) dollars . Find the marginal profit when 4 are sold.

### Calculas

Write the equation for a line in point slope form and in slope intercept form parallel to 3x-4y=12 and passes through (8,3).

### calculas

if the length is decreasing at a rate of 2 in./min. while width is increasing at a rate of 2 in./min., what must be true about area of the rectangle

### Calculas-Differentiation

Find the coordinates of a point on the curve y=6-x^2 at which the tangent of the curve at the point is perpendicular to the line y=1/4x+1.

### Calculas

Do I just put in 3 for t? A ball is dropped from a tower 550 meters above the ground with position function s(t) = 4.9t^2 + 550. What is the velocity of the ball after 3 seconds?

### calculas

airplanes fly from left to right along the path y=1+(1/x)and can shoot their bullets in the tangent direction at creatures placed along the x-axis at x=1,2,3,4 and 5.determine whether a creature will be hit if the player shoots when the plane is at p(1,2)

### Calculas HS

a trucker handed in a ticket at the toll booth showing that in 2hours she had covered 159 mi on a toll road with speed limit 65mph. the trucker was cited for speeding. why?