# Pre- Calculus

21,892 results, page 44
1. ## Math (pre-celc 12)

BC Place has 16 gates. In how many ways can you enter and leave the stadium by any gate? I'm not sure if this this is a combination or a permutation. I think it's a permutation and my answer is 256 ways. Thanks for the help.
2. ## Pre- Caluculus

Find the time at which the depth of the water in the tank is eual to half its initial depth. D(t)=sqrt(100-2t) the tank is empty when t=50 min
3. ## Pre-Algebra

Carpet Masters charges \$9.50 per square yard to clean a carpet. If you have two rooms with an area of six square yards each, how much will it cost to have the carpets cleaned?
4. ## pre algebra

find a variable and writing and equation and solve. the hoe team scored 80 points and won by 19. How many points did the opposing team make?
5. ## Pre-Algebra

Suppose you consider a rectangular garden of 36 square meters with whole-number side lengths. What’s the dimension of design that has the least perimeter? What’s the dimension with the greatest perimeter?
6. ## Pre-Algebra (check my answer)

5. Dave has work shirts in 5 different colors. He works three days each week. How many possible arrangements are there for the shirts each week? A. 15 B. 60 C.120* D.125
7. ## Pre Cal

how would i find the degrees of cos x= 3/2 if (0 <or= theta < 360)? i've tried putting it in my calculator with cosine^-1 but im just getting err:domain. Please help! The cosine function only goes from -1 to +1. There is no solution to cos x = 3/2.
8. ## pre-calc

A hall 100 feet in length is to be designed as a whispering gallery. If the foci are located 21 feet from the center, how high will the ceiling be at the center?
9. ## pre-algebra B

Milli tosses a coin and a six-sided die.The numbers on the die are 1 through 6. What is the probability that Milli will toss a tail and roll an odd number?
10. ## pre-algebra

which product equals 3t-12? What options do you have to choose from? Without that information, we cannot help you. Give us the options with your reasoning for your choice, and we will be glad to give you feedback. I hope this helps. Thanks for asking.
11. ## math

Resource allocation podunk institute of technology’s math deaprtment offers two cources: finite math and applied calculus.each section of finite math has 60 studnets, and each section of applied calculus has 50. The department is allowed to offer a total
12. ## Physics

A 6090kg space probe mobing nose-first toward Jupiter at 105m/s relative to the Sun, fires its rocket engine ejecting 80 kg of exhaust at a speed of 253 m/s relative to the space probe. What is the final velocity of the probe? I should have gotten 108m/s
13. ## Calculus (Partial Derivatives)

Using x hours of skilled labor and y hours of unskilled labor, a manufacturer can produce Q(x,y)=40xy1/5 units each week. Currently 20 hours of skilled labor and 243 hours of unskilled labor are being used. Suppose the manufacturer reduces the skilled
14. ## Pre-Algebra

Can I have someone check this please? I wouldn't want to do the whole page, then find out I had done them all wrong. :( [Percents of Change] A \$100 digital watch is now \$72 Decrease, 72/100 = negative percent. 100/72.00 = .72 .72 - 1 = 30%? Thanks. 30% is
15. ## Pre-Calc

The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction is given by y(t) = (1/4)e^-t cos6t, where y is the displacement in feet and t is the time in seconds. Find the displacement when
16. ## Pre-calc

Can someone please show me the steps to this problem...Thanks in advance. Let f(x) = Ð9xÐ. For the area above the x-axis and between the lines x= -9 and x=18 a. draw and label a sketch with the area shaded b. find the area of the region in the xy-plane
17. ## math pre cal

Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?
18. ## Pre-Cal

evaluate the trigonometric functions by memory or by constructing appropriate triangles for the given special angles. a) csc 30 degrees b) sin pi/4 = sqrt2 / 2 I just do not know how to find csc 30 degrees.
19. ## pre-cal

Change of Base Formula logb x = loga x/loga b to evaluate log14 41. (Round your answer to three decimal places.) i need a step by step preview please
20. ## Pre-Calc Helppp!!!

Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 110 and c = 136 (angle B=38) Round your answer to two decimal places.)
21. ## pre algebra

1. what is the sum of 5/6 + 2/3? a.1 1/3 b.1 1/2 c.1 2/3* d.1 3/4 2. sylvia has 6 1/2 boxes of chocolate to share at a family picnic. if she gives each person 1/3 of a box, how many people can receive chocolate? a.13* b.17 c.19 d.21 my answer=* please
22. ## Pre-cal

use mathematical induction to prove that 1^2 + 2^2 + 3^2 + ... + n^2 = n(n+1)(2n+1)/6 for all positive integral values of n. My work: n=1: 1(1+1)(2(1)+1)/6 = 1(2)(3)/6 = 6/6 = 1. 1^2+2^2+3^2...(n-1)^2+n^2= [(n-1)(n-1)+2n(n-1)+1]/6 = 2n^3+3n^2+n/6 =
23. ## Pre Algebra

The temperature was 72 degrees F. At midnight a cold front moved in dropping the temperature 12 degrees F. Write a number sentence to show result. I need help! Thanks to anyone helping.
24. ## math

Hi, How do I improve my math skills? I can't calculate in my head (I.e 2x43), I would actually have to write it down to solve it. I took pre-calc, calc and didn't have problem understanding. I don't know what is wrong. what should I do?
25. ## 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
26. ## PRE CAL SEQUENCES

Given the following finite sum 1/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+....+1/(n(n+1)) a) Find the first 5 partial sums b) Make a conjecture for a formula for the sum of the first n terms c) Use mathematical induction to prove your formula
27. ## Pre-Calc/Trig...

A ball is thrown upward with an initial velocity of 4ft/sec from a height of ten feet. what is the maximum height that the ball will reach. h(t)= -16+vt+s
28. ## Pre-Algebra

Tropical storm Alpha has winds of 50 miles per hour. Write and solve an inequality to find how much the winds need to decrease so that the storm is downgraded to a depression.
29. ## Pre Cal

a 6 foot person is standing x feet away form a 10 foot lamppost. What is the distance d from the base of the lamppost to the end of the persons shadow, espressed as a function of x.
30. ## pre-algebra

Use an inequality to solve the problem. The equation y=0.04x-0.40 can be used to determine the approximate profit,y, in dollars, of producing x items. How many items must be produced so the profit will be at least \$1402?
31. ## Mathematics: Pre-cal

Consider a rectangular bathtub whose base is 12 ft^2. At what rate is water pouring into the tub if the water level rises at a rate of 0.9 ft/min? Please show steps. (I want to know how)
32. ## Honors Pre-Cal

We're reviewing and I forgot how to do this. Given y=x2-4+3 (x2 is x squared) a)write in standard from b)find vertex c)find equation of the axis of symmetry d)find the x-intercepts e)find the y-intercept
33. ## 11th grade pre ap physics

An athlete whirls a 7.00 kg hammer tied to the end of a 1.1 m chain in a horizontal circle. The hammer makes one revolution in 0.9 s. What is the tension in the chain?
34. ## physics pre-ap

A(n) 1100 kg car is parked on a 4 incline. The acceleration of gravity is 9.8 m/s2 . Find the force of friction keeping the car from sliding down the incline. Answer in units of N
35. ## Pre algebra

A fair charge an admission fee of \$6 for each person. Let C be the cost of admission (in dollars) for P people. Write an equation relating C to P. Then graph your equation using axes
36. ## pre-cal

if the helicopter is moving forward at 30 mph and drops 400 feet in the elevation while the vehicle is moving 48 mph, how does the angle of depression change after 10 minutes?
37. ## Pre-Calc

If a pilot wants to travel 400 mph at a bearing of 80, what should he set his speed and bearing to counteract a wind blowing at 50 mph coming directly from South?
38. ## pre cal

Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form. 3, -13, and 5 + 4i Urgently need help
39. ## Pre-Alg

(Check my work?) 1.) Use arrow notation to write a rule that describes the translation of a point from (5,6) to (6,11) A.(x,y) -> (x + 1, y + 5) B.(x,y) -> (x - 1, y - 5) C.(x,y) -> (x - 1, y + 5) D.(X,y) -> (x + 1, y - 5) 2.) Point A(6,-2) is
40. ## Physics

Three identical balls, with masses M, 2M, and 3M are fastened to a massless rod of length L as shown. The rotational inertia about the left end of the rod is: That's the layout below. Would calculus be needed in this problem (intergration) because then Im
41. ## Pre-cal/Trig

(tan/(1+sec)) + ((1+sec)/tan) = 2csc (Show all work please.)
42. ## pre algebra

which inequalty statment is true? a. 8 < ã78 <9 b. 38< ã78 <40 c. 77 < ã78 <79 d. 6.083 < ã78 <6.085
43. ## Pre-Algebra

Also need help with this one- Approximate the square root to the nearest hundreth: square root of 1100 Thanks! -MC
44. ## Pre Calc

Verify the identity: sin x/tan x + cos x/cot x = sin x + cos x
45. ## pre-algebra

the two triangles are similar. what is the value of x. Be sure to explain your steps 10 inches 4 inches and 20 inches x inches I'm not sure how to find X
46. ## Porportions (Pre-Algerbra)

2/3 = 12/x A)x= 18 B)x= 12 C)x= 36************** D)x= 8 22 miles/ 55 hours = 12 miles / H hours A 48 B 30 C 45************** D 22 6/11 = 84/x A) x=40 B) x=120********* C) x=254 D) x=154
47. ## pre Algebra

find the sum of 4, eight times a number and nine times the same number. simplify the expression
48. ## pre cal

assume the angle is in the first quadrant, and sin theta equals 1/5. what is sin 2 theta?
49. ## Pre algebra

A number multiplied by itself and then by itself again gives -1,000. What is the number? Please show the solution step by step
50. ## Pre calc

Find solutions on interval 0,2pie (cosx/1+sinx) + (1+sinx/cosx) = -4
51. ## Pre-Calc

Does y=1/x have an inverse? It is a one-to-one function, so it should be the inverse equation is the same??? yes, the inverse is the same. Check it with G(f(x)) So, when drawing the inverse, it is just the same graph?
52. ## pre-al

If you roll a standard number cube 42 times, how many times do you expect the cube to show a six or an eight?
53. ## pre-algebra

the length of a rectangle is 10 inches more than its width. what are the dimensions of the rectangle if its perimeter is 80 inches?
54. ## Pre cal

1.Find the domain of the function algebraically y=3x-1/(x+3)(x-1) y=(1/x)+5/(x-3) 2.Find the range of the function y=10-x^2 y=(3+x^2)/(4-x^2) Please help me understand how to do them.
55. ## Pre-Calc/Trig...

Am i correct? The graph of y=3x^2-4x+2 opens downwards. FALSE The graph of y=2x^2-4x+2 has a y-intercept of (0,1). FALSE
56. ## pre algebra

the typist typed end of page 8 till the end of page 50. what would the pages be.

If the formula D(x,y) = (.7x,.7y) is applied to pre-image point (5, -7), what is the image point?
58. ## pre cal

Find the angle between the vectors u and v if u = (-1,4) v = (3,-4) a. 155.93 b. 158.58 c. 158.13 d. 155.24 e. 157.17
59. ## math pre calc

solve sin theta = 1/2,90 degrees less than theta less than 180 degrees
60. ## Pre Cal.

Solve 3y^2 + 4y - 2 greater than/equal to 0 3y^2 + 4y - 2 ≥ 0 3y^2 + 4y - 2 = 0 y = [-4 ± sqrt (4^2 - 4(3)(-2)]/(2 • 3) = (-4 ± sqrt 40)/6 = (-4 ± 2 rad 10)/6 = (-2 ± rad 10)/3 Is this right?
61. ## pre calc!!!

find symmetric equations for the line through the point parallel to the specified line. (1, -1, 2) parallel to x = -7 -4t y = -5-7t z = 2- 4t
62. ## pre-algebra

The length of a kitchen is 1 1/4 inches. The actual length is 20 feet. What is the scale of the kitchen
63. ## Pre-Calc

Establish the identity. sinx + cosx/sinx - cosx = 1+2sinxcosx/2sin^2x-1
64. ## Pre Algebra

A spoke on the bike wheel is about 12 inches long. The diameter of the wheel is about how many inches?
65. ## pre algebra

three of every seven sales transaction are on credit cards, what percent of the transactions are not on credit cards
66. ## pre-algebra

Angel M and Angel N are supplementary angles. If Angel M is nine more than one half Angel N, what are the measures of the angels?
67. ## pre algebra check

The measures of two angles of a triangle are given. Tell whether the triangle is acute, right, or obtuse. 19°,35° I think its obtuse
68. ## Pre calc functions

Determine whether the function g(x)=x^4-7x^2 is an even, odd, or neither function. Also determine the symmetry of its graph
69. ## Pre calc

Form a polynomia f(x) with real coefficients having the given degree and zeros Degree: 5 ; Zeros: 2, -3i and 4-i
70. ## Pre-Algebra

Ashley bought a dress at 30% off. The sale price was \$59.50. What was the original price of the dress?

72. ## Pre Algebra

Chad jogs 4 2\5 miles in 1\2 hour. What is his average speed in miles per hour?
73. ## pre algebra answer check

The probability that you will win a contest is 76%. What is the probability that you will lose the contest? 24%
74. ## Pre- Algebra

You buy x pairs of shoes that each cost \$24.95 the same number of socks that each cost \$4.75 and a pair of pants that costs \$29.99 write an expression in simplest form that represents the total amount of money spent. Would you add them all together?
75. ## Biology

How are the following terms related to the process of transcription and one another? Eukaryotes, Prokaryotes, membrane-bound nucleus, introns, exons, precursor RNA (pre-mRNA), mature RNA, heterochromatin, euchromatin, and structural gene.
76. ## Pre Cal

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.) 9pi/4 Looking for sin, cos, tan,cot, csc,
77. ## progamming JAVA

1.Write an algorithm, in English, to solve the following problem. Be sure to include pre- and post-conditions! 2.Problem: Solve X mod Y for all positive integers. Do so without using multiplication or division. 3.What is (7 / 3) + (4 % 5)?
78. ## Pre algebra

Tropical storm alpha has winds of 50 miles per hour. Write and solve and an inequality to find how much of the winds need to decrease so that the storm is downgraded to 39. Please help, explain steps
79. ## 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 ;
80. ## Pre-Cal

given the function y=2sin3x-1, identify the following below. also show its graph for the primary cycle. (identifying parts of a trig. equation) asymptotes= k= c= axis= primary cycle= period=
81. ## Pre cal

A parallelogram has sides of lengths 7 and 4, and one angle is 55°. Find the lengths of the diagonals. (Round your answers to two decimal places. Enter your answers as a comma-separated list.)
82. ## Pre-Cal

A box with a square base and an open top is constructed from 5400 cm^2 of cardboard. Find the dimensions of the largest possible box. I know the answer is : base lenght - 42.4 cm height- 21.2 cm please help me, thank you so much :)
83. ## Pre Cal help please!!

given f(x) = { 2x^2 + 5 x < or equal to 2 3 - x^2 x > 2 find lim f(x) x -> 2^+ lim f(x) x -> 2^- lim f(x) x -> 2
84. ## pre-calc

prove or disprove cos(x-y)=cos(x)-cos(y)
85. ## Pre-Calc (Circles)

Describe the conditions necessary, where circle A has a larger radius than circle B, for the two circle to have no points of intersection, while circle B is entirely in the interior of circle A.
86. ## Studying for Pre Cal exam

Find the fourth roots of − 1/2 + (square root)3/2 i Write the roots in trigonometric form. A - w 1=cos(35°)+isin(35°) w2 =cos(125°)+isin(125°) w3 =cos(215°)+isin(215°) w4 =cos(305°)+isin(305°) B - w1 =cos(40°)+isin(40°) w2
87. ## Calculus-Steve

Find the area of the region between the graphs of f(x)=3x+8 and g(x)=x^2 + 2x+2 over [0,2]. I got 34/3. Calculus - Steve ∫[0,2] (x^2+2x+2) dx = 1/3 x^3 + x^2 + 2x [0,2] = 8/3 + 4 + 4 = 32/3 Why are you taking the antiderivative of x^2 +2x+2 when we
88. ## Pre-Calc

How do I determine if there are common factors for x^5+3x^3+5x/4X^4+2x^2, when the leading coefficient of the denominator is greater than that of the numerator, and there is no constant in the numerator - thus making using the roots calculator impossible,
89. ## 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?
90. ## Programming & Algorithm

(1) How to design algorithms to implement the stack operations. (2) Write a program to multiply any two matrices. (Using Basic) and finally, (3) Consider the algebraic expression E=(2x+y)(5a-b)^3. Draw the tree T which correspond to the expression E and
91. ## Pre-Algebra [Permutations]

1.A furniture store sells couches that are available in 3 different styles, 7 different colors, and 2 different sizes. How many different couches are available? - If I multiply all of these, would that give me the answer? If so, the answer would be 42.
92. ## Pre Calc

Find the work done by a force F of 30 pounds acting in the direction (2,3) in moving an object 3 feet from (0,0) to the point in the first quadrant along the line y = (1/2)x. The answer is 85.38 foot-pounds. I just need to figure out how to get the answer.
93. ## Human Services/ University of Phoenix

Identify three considerations that should be a part of a program and proposal pre-planning process of grant proposal writing. This is a generalized question, no particular grant application.
94. ## Pre-Calc

Tee Ball is similar to baseball, but the field is a diamond 40 ft square. The pitchers mound is positioned 25 ft from homeplate. Determine the distance from the pitchers mound to 3rd base.
95. ## physics pre-lab

By trial and error with your calculator, find the angle theta for which sin theta and theta differ by 5%. This calculation must be done in radians. When you have found theta, express it in degrees. plzzz help thanx
96. ## Pre-Cal

Hi, can someone please solve this step-by-step for me? I really don't get it... Directions: Use the quadratic formula to solve the equation in the interval [0,2PI). Then use a graphing utility to approximate the angle x. 4cos^2x-4cosx-1=0 thanks.
97. ## Pre-Calc

Workers are designing a TV receiving dish in the shape of a paraboloid of a revolution, the factory sent them a paraboloid that is ten feet across at the opening and three feet deep. What is the best place the receiver can be placed for the best reception?
98. ## Math (Algebra/Pre-Algebra)

Ms. Caswell deposits \$450 into an account earning 8% interest per year. How much simple interest is earned after 4 years? Please explain.. I'm supposed to show work =] thank you!
99. ## Pre Algebra

6. Given the function rule f(x)=x^2-3x+2, what is the output of f(-2)? A. -8 B. 0 C. 4 D. 12 7. Suppose you earn \$15 for each car you wash. Which function describes the relationship between your total earnings E and and the number of cars you wash C? A.
100. ## Algebra Readiness (Pre-Algebra) B

Find the surface area for a cylinder with a height of 20 and a radius of 6. Use 3.14 for pi and round to the nearest whole number. 180 ft 720 ft 433 ft 135 ft I thinks it is 720 ft.