# Pre- Calculus

21,305 results, page 55

### pre-algebra..7th grade

Story Problem Some friends are recording songs on a CD. The first 1/5 of the CD has Alex's songs.The next 12 minutes of songs are Henrique's. 1/3 of the time is Brian's songs. Sally has 32 minuites. How many minutes of music are there in all?

### pre cal

A movie theater seats 400 people. For any particular show, the amount of money the theater makes is a function m(n) of the number of people, n, in attendance. If a ticket costs 2 dollars, find the domain and range of this function

### 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-Algerbra

Someone help explain? Justin wants to use 188 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he use? What will be the area of the garden? ~ A. 89 ´ 99 ; 8811 ft B. 92 ´ 96 ; 8832 ft C. 94 ´ 94 ; 8836 ft D. 93 ´ 95 ; ...

### Pre-Calc/Trig

A body was found at 6 a.m. outdoors on a day when the temperature was 50oF. The medical examiner found the temperature of the body to be 66oF. What was the approximate time of death? Use Newton's law of cooling, with k = 0.1947. A. Midnight (12 a.m.) B. 5 a.m. C. 2 a.m. D. 3 a.m.

### Pre-Calc

An airplane is flying at a speed of 250 mph at an altitude of 4 miles. The plane passes directly above a radar station at time t = 0. What is the distance s between the plane and the radar station after four minutes?

### Sixth Grade Pre Algebra

Can someone please help me ? I think I'm supposed to put all the like terms together, but I can't remember how to do this. I asked my mom but she can't remember. Solve for x 6x - 6 equals 2x - 26 Solve for x 2x - 1 equals -5x - 85 Thank you very much. Can you explain?

### Social Studies

I have to search and compare these civilization... ･pre 20th century Japan ･Incan It's my Social Studies project😲💦 Would you recommend me some good websites in English?

### pre calc

A cardboard box has a square base and a square top. The height of the box is 13 inches. Express the surface area A (the sum of the areas of all six sides of the box) in terms of the length l of the box. Can someone please help me

### 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

### calculus

A) How do you prove that if 0(<or=)x(<or=)10, then 0(<or=)sqrt(x+1)(<or=)10? B) So once that is found, then how can you prove that if 0(<or=)u(<or=)v(<or=)10, then 0(<or=)sqrt(u+1)(<or=)sqrt(v+1)(<or=)10? * calculus - Damon, Saturday, April 3, ...

### Pre-Algebra

Mistu purchased a basketball hoop for her driveway from a sporting goods store. After the sales tax rate of 5.5% was applied, the total cost came to $179.35.How much money would Mistu have saved if she had used a coupon good for 10% discount?

### Pre- AP Physics

The earth exerts a force of 1400 N on an orbiting communications satellite that is 35 mi above the Earth. What is the magnitude of the force the satellite will exert on the earth? Answer in units of Newtons

### Pre-Calc

Determine the center and the radius of the following circle: x^2+y^2+6x-4y-5=0 I got for the radius 3(sqrt2) I got for the center (-3,2) Can you please tell me if I am correct? The radius seems wierd.

### Pre algebra

mr.smith needs a photo measuring 4 inches wide and 6 inches long to be an enlarged proportional so that the width is 10 inches. what would be the length if the enlarged photo?

### Pre-algebra

Hi need help answering this question? In your own words, define the term equation and then explain what it means to solve an equation. Give an example of an equation and its solution. Explain why it is the solution.

### Pre-Algebra

Montel spends $0.75 every time he plays his favorite video game. Montel has $10. write and solve an inequality that shows how many times Montel can play the video game.

### pre calc

Water is poured into a container in the sape of a right circlar cone with raiud 4t an heigh 16 feet. Express the volue (V) of the water in the cone as a funtio of the heigh (h) of the water. thanks

### pre-algebra

atoms contain charged particles called protons and electrons. each proton has a charge of +1, and each electron has a charge of -1. A sulfur ion has 16 protons and 18 electrons. find the net charge. Thank-You

### math( pre-algeba)

there were 6 purple socks and 4 orange socks in a drawer. Zucky picked one sock without looking(or replacing the first). What is the probability that he picked 2 purple socks?

### Pre Algebra

I can purchase a 30-ounce bottle of juice for $1.80 or a 64 ounce bottle of juice for $3.20. How much do I save per ounc by purchasing the larger bottle? 30 divided by 1.80= .06 4 dividec by 3.20= .05 Subtraction .06 by .05 Answer = 0.1

### all

Im going to college for rn. i have to take pre req. before entering the nursing program. I received my ged in 2008 can you give me advice to help me improve studying habits so that i can succeed in requirements? The subjects are mth100,eng101,bio201-202,220,psy200&210,sph 106&107

### Pre-Ap Chemistry

This is my last question and this one really threw me for a loop. I know that the temp has to be converted to kelvin which would make it 315.4 What volume of oxygen gas can be collected at 0.683 atm pressure and 34.0◦C when 42.4g of KClO3 decompose by heating, according ...

### chem

I'm suppose to calculate the weight percent per volume (grams pre 100cm3) of ethanoic acid in a commercial sample of vineger from the following: (a) 0.4321g of pure momoprotic acid( formula weight 204.2 amu) required 23.45cm3 of naoh for neutralizalion.

### Pre-calc Math

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠B1 is smaller than ∠B2.) a = 78, b = 109, ∠A = 24° Find : ∠...

### American Government

As the country has grown and evolved, so too has the Executive Office of the President and the independent agencies. Give four specific examples demonstrating how the evolution of the executive branch has mirrored the evolution of the nation. Include at least one pre-twentieth...

### calculus - ratio test

infinity of the summation n=1: (e^n)/(n!) [using the ratio test] my work so far: = lim (n->infinity) | [(e^n+1)/((n+1)!)] / [(e^n)/(n!)] | = lim (n->infinity) | [(e^n+1)/((n+1)!)] * [(n!)/(e^n)] | = lim (n->infinity) | ((e^n)(e^1)(n!)) / ((n+1)(n!)(e^n)) | ..the e^n...

### calculus

find the first derivative of f(t)= (1-t)^(1/2)

### Calculus

Solve. (A) 2sin^2 x = 1 (B) tan^2 x = 3

### Calculus

Find the derivative if y^3 + y = 2cosx

### Calculus

Find the derivative if x^3 + 4xy^2 - y^4 = 7

### Calculus

Find the derivative if y=sin^-1(3x)

### Calculus

Find the derivative if y=sec^-1(x+3)

### Calculus

Find the derivative if y=sec^-1 (x+3)

### Calculus

Find the derivative if y=sin^-1 (3x)

### calculus

equation of the normal to the graph of f(x)= x/2x-3

### calculus

is (x)/(x^2-9) an even or an odd function?

### math calculus

Please explain how it is (ln 4) ¡Ò^8 2 x^-1 dx= (ln 8) ¨C (ln 2) =(ln 4)

### calculus

calculate Äƒ/Äx and Äƒ/Äy. ƒ(x,y) = xy² + x²y

### Calculus 3

Calculate the double Integral e^(y^2) dA D = {(x,y)| 0 <= x <= y <= 1}.

### Calculus

What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!?

### calculus

If f is the antiderivative of g(x)=(x^3)/(1+x^5) such that f(1)=0, then f(5)=___.

### calculus

how would you differentiate this equation?? dy/dx + e^(x+y) = 0

### calculus

Assume x and y are functions of t. Evaluate dy/dt. xy - 5x + 2x^3 = -70; dx/dt=-5, x=2, y=-3

### calculus

Assume x and y are functions of t. Evaluate dy/dt. xy - 5x + 2x^3 = -70; dx/dt=-5, x=2, y=-3

### calculus - vectors

Show that x dot y = 1/2 ( |x + y^2| - |x|^2 - |y|^2 )

### college calculus

how do you integrate sqrt( x^2 - (x^2)(e^(-2x)) )?

### college calculus

how do you intergrate sqrt((1+((1/4)/(4-x^2)))

### Calculus - Integrals

What is the integral of arctan x?

### Calculus

I'm not sure how to solve the equation 5^x-12*(5^-x)-1=0

### calculus

This is stupid, but can anyone find the derivative of f(x)=8^(1-2x^2)?

### Calculus

What is the limit as x approaches -1 of x - 5 --------------------- 4x(squared)-6x+ 3

### calculus

Logarithmics: Ie: log3 3^11 : Evaluate? Thanks.

### math calculus

how to find derivate of: y=(-4x^2+8)/(x^2+2)^2

### Calculus

If f(x)=5x^3–2/x^4 find f'(x) I don't understand what I did wrong for this ((x^4)(4x+7)-(4x^3)(5x^3-2))/(x^4)^2

### calculus

How do I find the domain of: y=squareroot of x^3-3x^2 ?

### Calculus

f(x) = {x^3 - 1, x> or equal to -1 {2x,x<-1 find limit x->-1 f(x)

### calculus

given the functions: f(x) = x^2 - 1, g(x) = x/x + 2 Why is x^2 - 1/x^2 + 1 the equation of (g o f)(x)?

### Calculus

Does -csc^2(x)sin^2(x) equal -1?

### Calculus HS

Final ? - Let f(x) = x2-x-6/x g(x) = x-3, find (f+g)(x) (f-g)(x) (f/g)(x) Thanks again

### Calculus

1/f = 1/p + 1/q What is the rate of change of p with respect to q if q=2 and f=4?

### calculus

Prove that d/dx(cot x)= -csc^2x

### calculus

Differentiate the function f(x) = 186.5

### maths calculus

How to integrate (cos2x)^2?

### AP Calculus 1

find derivative of cos^4(x)^4

### 12th AP Calculus

find the dy/dx of: y=3(cscx)^3/2

### calculus

find the derivative of the function g(x) = (1 + 3x)^6(5 + x - x2)^8

### Calculus

Is sum of sin(pi/n) DV or CV? I don't understand why it is DV.

### Calculus

How do I prove that the series ln(n)/(3n) is divergent?

### calculus

integrate: square root of (4-x^2)

### Calculus

Is the series (8+1^n)/(1+2^n) divergent or convergent?

### Calculus

find the integral of x^2 - sec3xtan3x

### calculus

What is the derivative of square root x ?

### calculus

simplify: e^3lnx+4lny

### Algebra with calculus

Solve for n: I=nE/nr+R not sure how to do this

### Calculus

Find the intergral of 1/[cos(^2) x

### calculus

Evaluate the following sum: 10 E (–1)^n–1(1n^2–9n–3) n=4

### calculus

4. f(x)= 7-5x^4 What does x equal? what is the absoloute max?

### calculus

what's the limit as n goes to infinity of (2 + 4/n^2)^(1/3)

### calculus

What is the period of y=5 cos pi x and how do you find it?

### calculus

find the derivative for y= (tan^-1)e^x

### calculus

Find the derivative of f(x)=[lnx]^4

### calculus

Find the area of bounded by f(x)=2x^2 and g(x)=x^4-2x^2

### calculus

Find the area of bounded by f(x)=2x^2 and g(x)=x^4-2x^2

### Calculus

limit of ((sin 3x)/x) as x approaches 0

### calculus

is square root x^4-4-y=0 and x^2+y^2=4 a function

### Calculus

Find the derivative of tanh(e^t)

### Calculus

Find the derivative of f(x)=x^2sinh^(-1)(3x)?

### Calculus

Another question, if f(x+h)-f(x)= -3hx**2+4hx-8h**2x+5h**2-3h**3, what is f'(x)?

### calculus

Differentiate the following function. A(s)=-19/s^5

### calculus

find a and b lim ((b^1/2)+(5^1/2)) x - 0 ------------------ = 2 (a(abs x)/4) - (1/4)

### calculus

find a and b lim x -> 0 ((2x+b)^1/2)-(5^1/2))/ ((a(abs x)/4) - (1/4))= 2

### Calculus

What is the x coordinate of the absolute minimum of 6x + [12/x] when x > 0?

### Calculus BC

Can someone help me differentiate this? f(x)= 2cos(5 ln(x)) So what is f'(x)?

### Calculus

can someone please explain h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 7 0 4 1 1 4 5

### Calculus

can someone please explain h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 7 0 4 1 1 4 5

### calculus

The linear approximation at x=0 to f(x)= sqrt (7+6x) is y=

### Calculus

What is lim (t^3 + 1)/(t lnt) x->infinity

### calculus

find y' if y=sin^-5x-cos^3x