# Pre- Calculus

21,152 results, page 68

### Pre-Cal

A piece of charcoal of mass 35g is found in the ruins of an ancient city. The sample shows a carbon-14 activity or R(t)=4.167 decays/sec. Convert the decay constant of ^14C from (1)(a)in terms of seconds instead of yrs. Find the number of atoms N(t)using constant you found.

### Pre Cal

Due to my child being injured I missed this lecture at class. I am so lost now I read the chapter books but lets face it they don't make those in english. Write a function in factured form, then inexpanded polynomial form, having as zeros 2, -1 and 1 (plus and minus) SQroot of...

### pre-algebra

if a serving has 346 calories, 46 grams of carbs, and 18 grams of protein, determine the # of grams of fat in the serving. c=346, h=46, p=18 f=346-4(46)-9(18)/9 I'm getting a completely different answer than what it's supposed to be. HELP!

### Math

I was thinking that I have to multiply but that doesn't make sense. However, I am terrible at story problems. A child's dose of medicine is 1/6 of a pre-measured dose cup. If the bottle of a medicine is the size of 9 doses, how many children's doses are there in the bottle?

### Administration

The local school system asks you to submit a proposa to do pre-employment physicals for sixty bus drivers. Wha financialor accounting inrmation do you need to submit a proposal? What will you charge the school bus system?

### PRE ALGEBRA

solution to electrical poles that carry electrical wire seem to get smaller the further away you are. Find the apparent height of each pole if the tallest pole is 50 feet tall and there is 100 feet between poles.

### pre-calc

The force, F, between two bodies of mass m1 kilograms and m2 kilograms whose centers of mass are a distance of r meters apart is given by the formula F = (Gm1m2)/ r2 where G is the gravitational constant of the universe. What are the units of the gravitational constant G?

### Pre Algebra

Use a five-step plan to solve the following word problem. Show all five steps in your response: Doug is twice Anne's age. Doug is 34 years old. How old is Anne?

### Pre Algebra

The low temperature for 6 consecutive days in a Montana city were 9°,3°,4°,16°,11°,and 5°. What would the low temperature have to be on the seventh day to have a mean low temperature of 6°for the week?

### Pre-Algebra

Is this correct? If I'm mistaken, please correct it for me, and show me how. Thanks. [Fractions, Decimals, and Percents.] 33 & 1/3 of $90 = $21.00 100% of 500 = $500 1% of 500 = $5.00 50% of 70 = $35.00 100% of 70 = $70.00 Thanks, you don't have to tell me all of then, just ...

### Pre Cal.

State the amplitude, period, and phase shift of the function y=-3cos(3x+ (3pi/2)) Amplitude: 3 Period: 2pi/3 Phase Shift: -pi/2 Am I right?

### PRE-ALGEBRA

A nurse wishes to to add water to 60 ounces of 20% solution of benzalkonium chloride to dilute it to an 8% solution. How many ounces of water does she need to add?

### Pre-calc/Trig

If cot(a)=3 and sin(b)= (15/17) where a being alpha lies in quadrant 3 and b being beta lies in quadrant 2, what is the exact value of sin(2a)

### Pre algebra

find the area of the triangle with base 2 1/5 yards and height 5/8 yard.( The area of a triangle equals half the product of its base and height)

### pre-algebra

Use algebra tiles to find the difference. Let one white tile equal +1and one black tile equal -1.6-(-9) Thanks

### Pre- Algebra

Linda entered an elevator on floor 9. She rode down 8 floors then she rode up 11 floors and got off. What floor was she on when she left the elevator?

### Pre Calc

Airplane going N 60 degrees W at a speed of 400 mph. What wind direction, at a speed of 75 mph will produce a resultant direction of N 50 degrees W

### Pre-algebra

I can't figure out how to solve: Question #1: Two number cubes are rolled and a coin is tossed. Find the number of possible outcomes. Question #2: What is the probability of winning a lottery game where the winning number is made up of 6 digits from 0-9 chosen at random.

### English

Hello! Has anyone read the story "The Necklace" by Guy de Maupassant? If you had, can you give me some examples of a pre-reading, while-reading and post reading activity which I could do with my students in the class? ( students - 18 year olds, learning english as a foreign ...

### Pre-Cal/Trig

Explain how to solve the following question. Surveying: From a point A hat is 10 meters above level ground, the angle of elevation of the top of a building is 42 degrees and the angle of depression of the base of the building is 8 degrees. Approximate the height of the building.

### PRE-CALC

A number is selected at random from the set {2, 3, 4, … ,10}. Which event, by definition, covers the entire sample space of this experiment? A) The number is greater than 2. B) The number is not divisible by 5. C) The number is even or less than 12. D) The number is neither ...

### Pre-Cal

Evalute the expressions: 1). sin(π/3)+cos(π/3) 2). (cos 45°)^2-(sin 45°)^2

### Pre- algebra help please anyone

X to the power of 11 like x11 and x to the power of two like x2 x9/x2 A x11 B x7 C 7 D x5

### Calculus

Factor the following: y = (x-a)^5 . (x-c)^5 . (a-c)^5 It looks already factored to me

### Calculus

If f(x) is a continuous function, find the constants a and b such that f(x) = { -x -3 <= x <= -2 ax^2 + b -2<x<0 b x=0

### Calculus

q=(1000/p+1)^2 - 1 find q' I will be happy to critique your thinking.

### calculus

integrate ((x^3/6)+(1/(2x)))*squareroot of 1+(x^4/4)+(1/4x^2)-1/2..plz help me...tnx in advance!

### calculus

does anyone know the shortcut to finding the derivative of a function for example: x^3-3x^2

### Calculus - Limits

lim x--> 3 (3 - x)/ (x^2 - 9) I know the answer is -1/6, but I can't figure out how to get there.

### Calculus

Find an equation for the tangent and normal to the curve x^2 + y^2 = 9 at x=1

### Calculus Test Question!!!!!

Find the derivative if y=x^1+sqrt2

### calculus

how do I find the range of a natural log like ln | x/(1+x^2) |

### calculus

f(x)=(y+a)and b=the limit as y aproches 2+f=1000. I need to know what y and a equal.

### CALCULUS 1

Find dL/dx set to zero. Solve for x. (27+x)/x * sqrt(64+x^2)

### Calculus

Find the average value of f(t)=-2te^(-t^2) on the interval [0,3]

### Calculus

Is thsi a solution of an ordered pair (4, -1) 4x = -17 - y 2x = -12 -4y I say yes ? Is this how you do it. 4(4) = -17 - -1 = 2(4) = -12 - 4(-1)

### calculus

calculate the indefinite integral (cosx)/(sin^3x)

### calculus

Find the sum of the series: 10 + 14 + 18 + 22 +...+138 and 6-12+24-48+96-...+1536

### calculus

integrate (x+2)/((x^2+2x+4)^2) the usual partial fractions don't work???

### Calculus

two complex numbers Z and W are related by the formula W=(Z+1)/(1-Z) what is W if Z=1.5i? thanks for the help!

### calculus

how to you use partial fractions to compute the integral of ax/((x^2)-bx)dx?

### calculus

does the series from n=1 to infinity of 1/arctan(2n) converge? I said yes but I didn't know what to

### Calculus

Can someone please tell me how to derive V=4/3pi(r)^3 to get x^2+y^2=r^2?

### calculus

solve the following differential equation: y' + (y)tanh(x) - 2e^x = 0

### Calculus

Find the point where the tangent to the curve is horizontal. f(x) = (x^2-2x+4)/(x^2+4)

### Calculus

Find the equation of the tangent to the curve y=e^x at the point where x=-1.

### Calculus

What is the derivative of y = ln 3x2? a) y' = 2/x b) y' = ln 6x c) y' = 2 ln3 d) y' = e6x I think it's d.) Thanks.

### Calculus

Find the derivative of Integral from -5 to sin(x) of cos(t^3)+t

### calculus

What is the domain for y=sqrt((x)/(x-1))? Can anyone please teach me how to do it? THANKS A LOT!

### calculus

find the x-values at which f is not continuous. which of the discontinuities are removable? f(x)=1/(x^2+1)

### Calculus

Find a formula for the derivatives of the function m(x)=1/(x+1) IS the answer -1/(x+h)(x+h+1)

### calculus

If we know that for a function, f(x), that f(2) = 6 and f(5) = 1, what is the average rate of change of f(x) on the interval [2,5]?

### Calculus

Find the derivative. g(x)=cos(x^6) Isn't the answer -6xsin(x^6)

### calculus

Evaluate the following limit: lim x --> 2 sqrt(x^2 - x)/(2x - 3)

### calculus

find all x,y intercepts of x+6/x-3 show work

### calculus

find all intercepts x^2-4/x-1 show work

### 12th AP Calculus

use implicit differentiation to find dy/dx and then d^2y/dx^2 x^2/3 + y^2/3 = 1

### calculus HS

Analtical method to evaluate Lim X -> -infinite

### calculus

are the deritives of sin and cos functions inverses

### Calculus

Find the maximum and minimum values of f(x,y,z)=x+4y+5z on the sphere x^2+y^2+z^2=1.

### Calculus

Limit as x goes to negative infinity of sqrt(x^2+3x)+x?

### calculus

f(x)=x^3/(x^2-1) find the regions of concavity and inflection points

### calculus

Use the Midpoint Rule to approximate the integral (5x-9x^2)dx from 6 to 15

### Calculus

Solve for the function y. dy/dx = xe^y, when y(1)=0 I got as far as: e^-y dy = x dx But then how do you continue from there?

### Calculus

Find the area between the two curves f(x)= ln(x+1)+2 g(x)= x^2-8x+12

### CALCULUS

AN EQUATION OF THE LINE NORMAL TO THE GRAPH OF Y= SQRT[3X^2 + 2X] AT (2, 4) IS??

### Calculus

I rewrote the quesion y = sqrt (4 + sin 10x)

### calculus

identify and explain all the kinds of discontinuity for y = (x + 4)/(x^2 - 16)

### calculus

Can someone help me with the problem? f(x)={ln 2x, 0<x<2 {2lnx, x >or= 2 The limit lim x-> 2 f(x) is?

### Calculus

Find the horizontal asymptote for the function: 3x^4-2x^3+7x/x^4/14x-2

### Calculus

Find all the points of inflection of the function: f(x)=x^3-3x^2-x+7

### calculus

solve what is the limit x->(pi/4) (1-tanx)/(sinx-cosx)

### calculus help

find the integral of square root of 1+x^3 dx or sqrt(1+ x^3)dx

### calculus

find the integral of square root of 1+x^3 dx or sqrt(1+ x^3)dx

### calculus

v(r)= k(a-r)r^2 where k is a constant evaluate v at a. This is what I got when I solved but it is not correct. v(a)=k(a-a)a^2 v(a)=ka^2

### Calculus

the length of the curve of intersection of the cylinder (4x^2) + y^2 = 4 and the plane x + y + z = 2

### Calculus

Find the equation of the tangent line to the curve 2e^(xy) = x + y at (0,2)

### Calculus

If the equation of the tangent line to the curve: xy^3+xy=6, (3,1) find m and b

### Calculus

limit of (10^n)/(n!) as n->infinity The answer is zero. Can you prove it?

### Calculus

Consider the function f(x)=x^4 + 8sqrtx Let F(x) be the antiderivative of f(x) with F(1)=-4. Then F(x)=_____

### Calculus (1st Year)

Solve the integral: S (e^-cosx)(x^2)dx

### Calculus

find the equation of the tangent line to the curve when x=7. f(x)= 6-x^2

### Calculus

find the equation of the tangent line to the curve when x=7. f(x)= 6-x^2

### Differential calculus

Given that x=sinht and y=-cosht. find: dx/dy

### Differential calculus

Given that f(x)=x, g(x)=x-1: h(x)=sqrtx-1. find f0g0h.

### Differential calculus

Given that f(x)=x, g(x)=x-1: h(x)=sqrt(x-1) find f0g0h.

### Calculus

Infinite series question. an=2+(0.99)^n Converge or Diverge?

### calculus

x arc cos square root of4x+1

### Calculus

[Implicit Differentiation] (5x-y)^4 + 2y^3 = 258 evaluate y' at the point (1,1)

### Calculus

Suppose f and g are functions that are differentiable at x=1 and that f(1)= 2, f'(1)= -1, g(1)= -2, and g'(1)= 3. Find the value of h'(1). h(x)= [x f(x)] / [ x + g(x) ]

### calculus

what is the limit of (1-tanx)/(sinx-cosx) as x approaches pi/4?

### Calculus

Find the limit. lim (x+2)/(radical(9x^2+1)) x-->infinity

### Calculus

Find the derivative of 1/8tan^(-1)(x/8) & (x/2)(sqrt(64-x^2) + 32sin^(-1)(x/8)?

### Calculus

Differentiate the following function. f (x) = 7 sin(x) + 1/6 cot(x)

### calculus

find the limit as x reaches infinite with the equation x^2-5/2x+1

### calculus

how would i find the deriviative of y= x^ (- square root of 2)

### calculus

write the product in standard form (1-4i)(3-2i) (squareroot-4+i)(6-5i)

### Calculus

Sketch the graph of a function that is continuous at x=5 but not differentiable at x=5.

### calculus

Find the derivative. Could you please show me the steps? y = ãx(5-ãx)