# Pre- Calculus

21,868 results, page 67

1. ### Calculus

Find c so y=4x+3 is tangent to the curve y=x^2+c
2. ### Calculus

solve [1-cos(7pi/4)]/2
3. ### Calculus

Calculate the indefinite integral of ((x^3)+1)/(x^5)
4. ### calculus math

Lim tan(x+ pi/4)^1/x x-->0
5. ### Calculus Help

In the following x,y and (a) are all variables. Show steps please! Thank you! 1) y^2 = x^2+a^2 2) y^2+ay = x^2+ax+a^2
6. ### Calculus

Calculate the indefinite integral of ((x^3)+1)/(x^5)
7. ### Calculus

lim (sin 4x/3x) x->0 Is the answer 4/3 or -3/4?
8. ### Calculus

Solve the differential equation f"(x)=x^2, f'(0)=3, f(0)=-1
9. ### Calculus

If d/dx(f(3x^5))=9x^4, find f'(x) I can't figure out what this means
10. ### Calculus

Integrate [sinx/(1+cos^2(x))] from pi/2 to pi.

find y' and y” by implicit differentiation. 2x^3 + 3y^3 = 8
12. ### Calculus Help

find y'' by implicit differentiation. 2x^3 + 3y^3 = 8
13. ### math calculus

how to calculate dy/dx for the curve y=x^(ln x)^2
14. ### calculus

x +13/x-16 less than or equal to solve the following inequality
15. ### AP Physics 1

This isnt exactly a hw question... but for anyone who knows: Im considering to take AP Physics next year as a challenge. I'm going to be taking pre-calc next year ( i already took my algebras) and im not too great in math but im good at memorizing and retaining info... will AP...
16. ### Pre cal

From a point A is 8.20 meters above level ground,the angle of elevation of the top of a building is 31degrees 20 min and the angle of depression of the base of the building is 12degree 50 min. Approximate the heighth of the building
17. ### pre algebra

Application of percent Alice earns a monthly salary of \$315 plus a commission on her total sales. Last month her total sales were \$9640, and she earned a total of \$1182.60.What is her commission rate?
18. ### Math (Pre-Cal) (Exponential Functions)

A car was valued at \$38,000 in the year 2003. The value depreciated to \$11,000 by the year 2009. Assume that the car value continues to drop by the same percentage. -What will the value be in the year 2013?
19. ### Pre-Calc/Trig...

Helpp needed, this is sort of confusing me. Describe the nature of the roots for this equation. 2x^2-x+1=0 A. Two real, rational roots B. Two real, irrational roots C. One real, double root D. Two complex roots
20. ### Pre-algebra

Jack runs 275 miles per day during soccer season. He has already run 25 miles this morning. He plans to run 2.5 miles each day. What is the fewest number of days he will need to reach his goal?
21. ### ACCOUNTING

On July 1, 2011 you purchase and pay \$36,000 for a three year insurance policy. How much will your insurance expense be this year and during the following three years under the cash and accrual basis methods? At December 31 of each year, how much will Pre-Paid Insurance be on ...
22. ### 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...
23. ### pre calc

Carson wants to invest \$100,000 in two ways. He wants to purchase a certificate of deposit that pays 11% per year and invest the rest in coorporate bonds that pay 15% per year. He is looking for a total return of 12%. How much money should Carson place into each investment ...
24. ### pre algebra

Jonathon is starting a new job where he will earn \$100 per week plus 15% commission on all sales. Write an equation and solve it to show what his sales were for a week if he earned \$380.00? Round your answer to the nearest integer. Thank you! I think you start with 10 +.15s = 380
25. ### Pre-Cal

A drone 125 ft high sights a landing pad with an angle of depression of 15 degrees. what is the horizontal distance between the drone and the landing pad? I tried all the methods set it up multiple ways, and I'm at a loss. My teacher said the answer is 466.5ft.. but how? ...
26. ### economics

First,label the following scenarios as to whether they would create a producer or consumer surplus. Then, after you have labeled each scenario, calculate the ensuing surplus. Alice is willing to spend \$30 on a pair of jeans, and has a coupon for \$10 off she found online. She ...
27. ### pre cal

The 1st year and 3rd year periods for these accounts are the lengths of time that you must keep the money in the account. (You pay a penalty if you take the money out before the term is up.) Why might an investor choose a Certificate deposit with a shorter term rather than a ...
28. ### Math

Two hundred tickets were sold for a concert. Forty percent of the tickets were pre-sold. How many tickets were sold at the door?
29. ### pre-calc

Two nonvertical lines have slopes m1 and m2, respectively. The lines are parallel if ___ and the ___ are unequal; the lines are perpendicular if ___.
30. ### calculus II

(A) 2 students are sharing a loaf of bread. Student A eats half of the loaf, then student B eats half of what remains, then student A eats half of what remains, and so on. How much of the loaf will each student eat? (B) 2 students are sharing a loaf of bread. Student A eats 2/...
31. ### pre-calc

The radius of the earth is approximately 4,000 miles. The acceleration due to gravity is approximately 32 feet per square second. The mass of the earth is approximately 6 × 10^24 kilograms. Calculate the value of G in units of kilograms, meters, and seconds.
32. ### Trig/Pre-Calc

A bird is flying 30 mph in a direction 30 degrees south of east. Affecting the flight of the bird is a wind blowing from the northeast to the southwest at a speed of 10 mph. What is the resulting speed of the bird?
33. ### Pre Cal

A circular Ferris wheel has a radius of 9 meters. The ride rotates a rate of 10 degrees per second. When you get in the ride at the bottom the seat is 2 meters above the ground at its lowest point in meters. How high is the seat after 54 seconds.

Lester deposited \$400 into a savings account earning 4.5% simple interest, and \$450 into an investment account earning 3.2% interest compounded annually. What was the total interest he earned in 3 years? A \$986.00 B \$89.06 C \$9.60 D \$98.60
35. ### pre algebra

matthew mixes pretzels that sell for \$1.50 a pound with cereal that sells for \$3.00 per pound. he wants to make 12 pounds of mixture to sell for \$2.00 a pound. how many pounds of each should he use?
36. ### Pre-Algebra

30 ft pipe is broken in three pieces. The shortest piece is 6ft. shorter than the longest piece. The medium length piece is 2/3 the length of the longest
37. ### 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?
38. ### Pre-Calc

A quadratic function has its vertex at the point (-5,-2). The function passes through the point (-8,-10). Find the quadratic and linear coefficients and the constant term of the function.
39. ### Math Pre Algebra

Find the simple interest. \$900 deposited at an interest rate of 3% for 5 years. \$1,348 deposited at an interest rate of 2.5% for 18 months.
40. ### Pre-cal

The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the form r cis(theta), where 0 <= theta < 360. Find theta in degrees. I need help.
41. ### 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?
42. ### Pre-Algebra

You drop a rock off a bridge. The rock's height, h(in feet above the water), after t seconds is modeled by h=-16t2+541. What is the height of the rock after 2 seconds?
43. ### Pre ALgebra

If a pizza with a diameter of 12 inches costs \$10.99, based on area, about how much should a 15-inch pizza cost? (Hint: Be sure to use the area of the pizza in your proportion, not the diameter.)
44. ### Ms.Sue is this better?

In the article The String Theory, by David Foster Wallace, there were three writing techniques that I noticed Wallace used. First, I think Wallace was informative and explanatory. He explained why there are some professional tennis players who are unknown and obscure to the ...
45. ### Pre-Algebra

If you used the rule (3x + 1, 3y – 4) to transform Mug into a new figure: How would the angles of the new figure compare to Mug’s angles?
46. ### maths pre ap

Krispy Krunch cereal is 49% sugar. about how many ounces of sugar are in a 16 oz box of Krispy Krunch?
47. ### Pre-algebra

When graphing the equations y =2x-2,and y=2x+3, what observation can you make about the graphs. Can you make the same observation before graphing the lines? How?

Find the change in temperature or elevation. 1) From -16 degrees C to 23 degrees C 2) From -47 degrees C to -38 degrees C 3) From 9 degrees F to -12 degrees F 4) From -16 degrees F to -27 degrees F
49. ### Pre-Algebra

I don't really know how to find what the lenght of the hypotenuse is. - If the length of leg #1 is 5, and the length of leg#2 is 12. What is the hypotenuse?
50. ### Pre-Calc B

How do I find zeros on a graph of a cubic function? I can tell that two of the zeros are -4 and 3 because they show on the graph, but how do I find the other?
51. ### pre-calc

prove the identity: (tan theta)/(csc theta) + 1/(sec theta)= sec theta
52. ### Pre cal

In a sinusoidal,function, how do you determine whether or not y= sin4(x) has a period of 2 pi If it is equal to 2 pi then what is a sinusoidal function that is not equal to 2 pi
53. ### PRE-CAL

How can I solve this questions and get those answers???? answers sec 13pi/4=? =>-ã(2) csc 13pi/4=? =>-ã(2) sec (-pi/6)=? =>2ã(3)/3
54. ### Pre Calc

use properties of the trigonometric function to find the exact value of each expression. Do no use a calculator. sec ( - pi/18) * cos (37 pi)/18 I do not see how to do this problem. Every time I do it out I get a reference angle of twenty degrees which isn't on the unit circle...
55. ### History

I have read the suggested link you and my conclusion is writting below. Thanks,for all your suggestions. Question 2 During World War I the most striking break from pre-war conditions on the home front was Answer (A)the use of volunteer armies. (B)central planning of the ...
56. ### 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.
57. ### pre calc

An open box is formedby cutting squares out of a peice of cardboard that is 18 feet by 26 feet and folding up the flaps. What size corner squares should be cut to yield a box that has a volume of 250 cubic feet
58. ### pre cal

The vector u = 94300, 5200) gives the number of units of two models of laptops produced by a company. The vector v = (1800, 1200) gives the price in dollars of the two models of laptops, respectively. Identify the vector operation used to increase revenue by 5%
59. ### pre algebra

a typist works from 10am to 6pm making \$120 for the day. after typing from the end of page 8 to the end of page 50, find the number of pages per hour. find the rate of pay in dollars per page
60. ### 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 ...
61. ### Pre-Calc

Ok, so the problem was about a person with 300 feet of fence to make a rectangle enclose. The person also wanted to use the fence to split the enclose to two parts with the fence paralel to two of the sides. Find the dimensions So I am confuse on how to solve this.
62. ### Pre Algebra

Carol has a collection of 100 stamps. The graph shows the percentage of stamps she has from each country. How many more of Carol stamps are from Italy then from England. A. 22 stamps B. 25 stamps C. 47 stamps D. 3 stamps Please help me I'm a little bit confused!!!!! @Ms. Sue
63. ### Pre Algebra

A 154-lb person burns 420 calories per hour riding an excercise bicycle at a rate of 15 mi/h. Write a function rule to represent the total calories burned over time by that person. Explain how the information in the problem relates to the function.
64. ### Pre algebra

when a skydiver jumps from an airplane, the distance of d in feet the diver falls in t seconds before opening the parachute is given by the formula d=16t^2 (the formula asumes that there is no air resistance) find the time it takes a skydiver to fall 1,296ft before openening ...
65. ### Pre-Calc

A large painting in the style of Rubens is 3 feet longer than it is wide. If the wooden frame is 18 in wide and the area of the picture frame is 286 ft^2, find the dimensions of the painting. I have the basic idea down of what I'm supposed to do to solve it.. But I just can't ...
66. ### Pre Cal---Fix to the question below

Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t, whenever possible. (If there is no solution, enter NO SOLUTION.) 4pi = ( , ) sin(4pi) = cos(4pi) = tan(pi) = cot(pi) = sec(4pi) = ...
67. ### Pre-Calc

The concentration C of a chemical in the bloodstream t hours after injection into muscle tissue is C=(3t+t)/(t^3+50) a. determine the horizontal asymptote of the function and interpret its meaning in the context of the problem. b. use a graphing utility to graph the function ...
68. ### English

I forgot to add a sentence at the beginning. I don't think the verb trust is correct. When Johnny moved to New York. Claire wondered how they could trust each other. By the way, can you recommend a site where I can find entry tests for students at a pre-intermediate/...
69. ### Pre-Calc

Two farmers were plowing along the edges of a triangular cornfield. They both started at the same corner of the field. The first farmer plowed directly West for 0.5 miles and then stopped. The second farmer doesn't know how far she traveled, but she knows it was N45E at a ...
70. ### Pre-Algebra

I need to check my work... estimate the following products or quotients 17 11/12 divided by 6 1/10 The first step I did was convert to improper fraction then I multiplied after changing the reciprical, and then I multiplied the numerators and then multiplied the denoninators ...
71. ### pre-algebra

jack brought 3 items that cost 25 dollars each, and five items that cost 40 dollars each. what was the total cost, including 5% sales tax?
72. ### Finance

If I have \$40,000 of pre-tax what are the differences between \$1,000 tax credit versus a \$1,000 tax deduction for a single taxpayer in the 25% tax bracket?
73. ### Accounting

Given the following information for the fiscal year ended June 30, 2001: Product sales: 28,189,612 Service sales: 11,688,793 Cost of goods sold- products: 10,633,956 Cost of goods sold- services: 5,869,106 Operating expense: 14,904,460 Pre-tax operating income: 8,470,883 ...
74. ### math pre-agebra

how do i write this equation cars the marton family took a vacation that covered a total distance of 1356 miles. the return of the trip was 284 miles shorter than the first part of the trip. how long was the return trip?
75. ### pre cal 11

i am stuck at a question that is asking for the common difference, first term, and general term for the arithmetic sequence the question is t10=50 and t27=152 i found my d=6 and t1=(-4) so know my equation is: tn=(-4)+(n-1)6 i had asken my teacher to tell me what the general ...
76. ### 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.
77. ### Calculus

The ideas we are practicing in these exercises can be put to practical use. A calculus teacher's son likes to shoot arrows. He was wondering at what speed the arrow leaves the bow when it is released. So they went to a large deserted beach at the Great Salt Lake and shot the ...
78. ### pre-algebra

Wel-min makes a square quilt that has an area of 100 square feet.It has 25 square blocks, each the same size. What is the legth of each side of a block? A-2 feet B-4 feet C-6 feet D-10 feet
79. ### URGENT! Last calculus question!

Hey! So, I was wondering if someone could answer this. I am mad studying for my exam and I still have a few questions left that I just don't have time to answer, and the assignment is due tomorrow. Thanks and here is the question: Use calculus and algebraic methods to do a ...
80. ### calculus

fin derivative of the function (t+e^t)(4- sqrt t)
81. ### Differential calculus

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

For the piecewise function, find the values g(-8), 8(3), and g(8). g(x)={X+6,FOR X<=3 7-x, for x>3
83. ### Calculus

f(x)=4-x^2-ln((1/2)x+1) find the tangent line approximation of f(-0.2)
84. ### Calculus

find the derivative (df/dx) of the squareroot of sin4x
85. ### Calculus

find the area of the region. 2y=4sqrtx , y=3 and 2y+2x=6 ?
86. ### calculus

What is the limit of this function as x approaches infinity? 2^x + x^3 / x^2 + 3^x
87. ### Calculus

If the function f is defined by f(x)=x^2-2x, find limit h->0 (f(3+h)-(f(3-h))/2h
88. ### Calculus

Determine all values of x for which each function is discontinuous. F(x)= 3x+4 / 4x^2 - 2x -2
89. ### Calculus

How do I integrate (x^2)(e^(x^3)) dx? I think it is integration by parts but after trying that, I got confused?
90. ### Differential calculus

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

lim (-x+10)/(x©÷-100) x¡æ10 is this correct? 1/20
92. ### Differential Calculus

Given that p=(2q^2-5)^2. when q=3, it is increased by 0.7%. find the appropriate percentage in p.
93. ### calculus

Find the limit as x approaches -4 of 4-lxl/4+x
94. ### 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.
95. ### Calculus

u=-1,3 and w= 2,-5. Find the component form of the vector. 3. 2u + 3w A 0,1 B 5,-12 C 2,3 D 1,-2 E -3,8 F 4,-9
96. ### Calculus

Find the indicated limits. Lim x-> 1- sqrt 1 - 1/ x-1
97. ### calculus

from the first principles,find the deriviative of 3/x with espect to x
98. ### calculus

Please help me find the derivative of f(x) = x^(2^x) I got to ln(f(x)) = 2^x(lnx) but now I'm stuck..
99. ### calculus

What is the nth derivative of sinhx and coshx?
100. ### calculus

Find the DERIVATIVE: h(x)= e^3x+2/e^3x-2 (quotient rule)