# Pre- Calculus

21,812 results, page 40

1. ### Pre Algebra

I have to create two dice (each on has six sides) they have to be numbered in such a way that the probability of rolling the numbers 1-12 are the same? I know this is a function but I am having trouble.
2. ### HELP PRE-CALC ASAP

An experiment consists of selecting a number at random between 0 and 9 inclusive, and a letter of the English alphabet. What is the size of the sample space of this experiment? A) 35 B) 36 C) 52 D) 234 E) 260
3. ### Pre calc

A farmer with 2000 meters of fencing wants to enclose a rectangular field that borders a barn. If the farner does not fence the side along the barn, what is the largest area that can be enclosed?
4. ### Math 142 (Pre-Cal) (Circles)

A wheel has a radius of 10 inches is rotating with an angular velocity of 2.5 revolutions per second. Find the distance the wheel travels in 15 seconds.
5. ### Pre algebra

* There are 1,000 of an endangered species of bird left. If the population drops by 50% each year, how many years until there are only 1% of the current total left? ( round to a whole number)
6. ### Pre-Cal/Trigonometry

Triangle ABC is given where angle A=64 degrees, a=16 in., and the height, h, is 15.3 in. How many distinct triangles can be made with the given measurements? Please explain your answer to your best ability
7. ### Pre-Cal

Assuming that you invest \$12,000 in Japan, how long (to the nearest year) must you wait before your investment is worth \$17,000 if the interest is compounded annually? The rate is 0.5%
8. ### Pre-Algebra

Find the perimeter ( I am not sure of the step) Can someone help me PLease If a rectangle whose dimensions ar e8 1/2 in.x 3 3/4 in. am I to multiply because this is what i got 0.020564475m^2 please get me going in the right direction . Thank you in advance for the help.
9. ### pre cal

find the standard form of the equation of the ellipse with center (0,0) and foci at (+- 4square root 3, 0) and verticies (+-8,0) x^2/a^2 + =y^2/b^2 = 1 a = 8 b = sqrt(8^2 - (4sqrt3)^2) ..= sqrt(64 - 48) = sqrt(16) = 4 Thus, x^2/64 + y^2/16 = 1
10. ### Pre Calc 12

Four consecutive integers have a product of 360 Find the integers by writing a plynomial equation that represents the integers and then solving algebraically.
11. ### pre calculos

A statement Sn about the positive integers is given. Write statements Sk and Sk+1, simplifying Sk+1 completely. Show your work. Sn: 1 ∙ 2 + 2 ∙ 3 + 3 ∙ 4 + . . . + n(n + 1) = [n(n + 1)(n + 2)]/3 ________________________________________
12. ### pre-alg

Using 1 inch = 15 feet as the scale factor, what are the blueprint dimensions of a room in a model house that is actually 30 feet × 45 feet? a. 2 in x 3 in b. 3 in x 2 in c. 2 in x 2 in d. 3 in x 2 in I got b. Is this correct? Thank you!
13. ### Calculus

Reflecting the graph calculus problem f(x) = 5^x? reflecting the graph about the x-axis and the y-axis: y=___________ reflecting the graph about the line y = 3. y=__________
14. ### Multivariable calculus

Hello, I have the next exercise about chain rule in multivariable calculus: I have to show that the differential equation: y(dz/dx)-x(dz/dy) = (y-x)z can be change to the equation: (dw/dv) = 0 using the new variables: u= (x^2)+(y^2) v = (1/x)+(1/y) w = ln(z)-(x+y) For that I ...
15. ### Governemtn

Which group would be more likely to approve of a pre-emptive strike to rid the world of a terrorist friendly country (government))? liberalists or conservatists? I think it's conservatists it is You're right.
16. ### pre calc

suppose you have 102m of fencing to make two side by side rectangles, making one large rectangle when put together. What is the maxium area that you can enclose?
17. ### pre ap chem

heating an ore of antimony and iron II sulfide. Sb2S3+3Fe-->2Sb+3FeS when 15g Sb2S3 reacts with an excess of Fe, 9.84g Sb is produced. what is the pecent yeild of this reaction?
18. ### pre-cal/trig

PlEASE help me with this!! I need it as soon as possible....... cos(x-(pi/4))+sin(x-(pi/4))=1 Find the answer from 0 to 2pi. When I slove this, I got cosx+sinx=(1/ square root of 2). then I don't know what to do the rest. Please help me.
19. ### Pre-Cal

Find the greatest integral upper bound of the zeros for the following function. f(x) = 4x^3 - 2x^2 - 12x + 1 Find the real zero(s) to the nearest tenth. f(x) = 2x^3 + x^2 - 1 [I believe the numbers should be around -1 and 0 and 0 and 1.]
20. ### Pre-Cal

Find all the solutions of the equation in the interval (0,2pip) sin(x + pi/6) - sin(x -pi/6) = 1/2 I am only stuck on the last part. I have 2sinx(sqrt3/2) = 1/2 Does the 2 cancel out with the sqrt 3/2. I am not sure what to do.
21. ### pre cal

a pendulum length 12.3 inches swings 2 degrees and 57 minutes to each side of its vertical position. To the nearest hundredth of an inch, what is the lenght of the arc through which the end of the pendumlum swings?
22. ### History

I know that I posted this quetsion earlier How did the Spanish change the way that the Pre-Colombian people lived?we don't have a book. Is there any way you can help me start off someway so I know what to search or get a general idea. Thank you.
23. ### Pre-Calc

A force of 45 pounds is exerted along a rope attached to a crate at an angle of 30 degrees above the horizontal. The crate is moved 22 feet. How much work has been accomplished?
24. ### Pre Algebra

You deposit \$3350 into a savings account that earns 5% interest compounded annually. Find the balance of the account after 2 years. Round your answer to the nearest cent
25. ### pre-calc HELP PLEASE

solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused. 2sin2x-3sinx=0
26. ### Pre-calc

Heres the equation: (x^2)-(4y^2)-(4x)+(24y)-(36)=0 Your supposed to find the coordinates of the center, foci, and vertices, and the equations of the asymptotes of its graph. So first you complete the square right? (x^2 -4x+4)-4(y^2 +6y+9)=36+4+36 [((x+2)^2)/76] -[(y+3)^2)/19]=...
27. ### Pre-Algebra

If a ping pong ball falls from the top of a building that is 168 feet high, how many seconds will it take the ball to hit the ground? Remember, the formula for distance is d = 16t^2. 1 3.2 10.5 16
28. ### pre calc

A coin is tossed upward from a balcolny 370 ft high with an initial velocity of 16 ft/sec. during what interval of time? will the coin be at a height of atleast 50 ft (h= -16t^2 +vot + h0) is the answer 0>= t<+5
29. ### Pre-algebra

Dwayne walks a total of 960 feet around 3 sides of a square city block. Which equation and solution show a correct way to find the perimeter, P, of the block?
30. ### PRE-CALC

If you put \$2,000 in a savings account that pays 6% interest compounded continuously, how much money will you have in your account in 4 years? Assume you make no additional deposits or withdrawals
31. ### Math (Pre-Cal)

The number of Sasquatch living in northern Ecotopia t years after 2016 is given by the formula s(t)=3(1.12)^t . Determine how long it will take for the Sasquatch population to double. Do this algebraically?
32. ### Pre Calc

Use a graphing utility to graph the function and approximate (to two decimal places) any relative minima or maxima. (If an answer does not exist, enter DNE.) f(x) = −x2 + 9x − 8
33. ### Pre calc

Please help me proof the identity. This isn't even math to me, I can not understand it so please show all work. God bless A)1-cos2x/sin2x=tanx B) sin4x/sinx=4cosxcos2x
34. ### Language Arts

1.Which of the following will you most likely find in a historical novel such as Johnny Tremain? A. A setting in pre-Revolutionary town such as Boston.*** B. Mythical chractars such as Johnny Appleseed. C. Opinions of modern-day historians and political writers. D. Directions ...
35. ### Pre-Calculus

The logistic growth model p(t)=0.90/1+3.5e^-0.339t relates the proportion of new personal computers sold @ Best Buy that have Intel's latest coprecessor t months after it has been introduced. a) what proportion of new personal computers sold @ Best Buy will have Intel's latest...
36. ### tefl course

Structure an ESA (boomerang pattern) based lesson for a pre-intermediate class, teaching language commonly used for shopping, so that students can ask for, find the price for and purchase everyday food and clothing items:
37. ### Pre-Cal

Four couples have reserved seats in a row for a concert. How many ways can they be seated if the two members of each couple wish to sit together? How do I go about doing this problem? I'm not sure what/how I should multiply this out...
38. ### world history

The popularity of an individual Hindu deity was largely a reflection of a) its ranking by the Hundred Schools of Thought. b) the approval it received from Siddhartha Gautama. c) its pre-Aryan origin. d) the size of its pyramids. I think it's A but I'm not positive.
39. ### Pre-Ap Chemistry

This is due online in 20 minutes and I've been working on it for 3 hours. Im lost on what to do with this question. Please help How much H2 gas at STP can be produced by the reaction 2Na(s) + 2H2O(§¤) -> H2(g) + 2NaOH(aq) of 3.80 g of Na and excess water? Answer in units ...
40. ### PRE-CALC

I am having touble understanding: how to factor the polynomial : 8x^4 -6x^3 -57x^2 -6x-65, into its linear factors, given that i is a zero. I tried to use synthetic division, but i keep getting a remainder... please help me understand how to solve it.
41. ### Calculus

1. Use the Mean Value Theorem to find an x-value where the instantaneous slope=average slope over the given interval: f(x)=(9-x^2)^(1/2) on [-3,2] I have done three chapters of Calculus already and I never have had to check for extraneous roots. So, my question is, when ...
42. ### Pre-Algebra

The sum of their ages. is 97. The difference of their ages is 19. Find their ages.
43. ### pre calc

from a distance of 50 feet from the base building, the angle of elevation to the top of the building is 68 degrees. estimate the height of the building to the nearest foot. a.124 b.20 c.19 d.46 i think its d?
44. ### pre algebra

A cylinder has a circumference of 16pi inches and its height is half the radius of the cylinder? What is the total surface area of the cylinder? Give answer in terms of pi. do not know how to do this....please help
45. ### pre algebra

hi my answers ten thanks ms.sue and other touters 9 An equilateral triangle has a perimeter of 48 centimeters. If the triangle is dilated by a factor of 0.75, what is the length of each side of the new triangle? 3 10***** 12 16
46. ### pre-statistics

Days Stayed Frequency 3 60 4 51 5 14 6 22 7 8 What is the probability a patient stayed at least 5 days? (Round to the nearest thousandth)
47. ### Pre-Algebra

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

Find (a) f X g , (b) g X f, and (c) f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For the f(x) the 3 is little above the sqrt sign. my answers were: (a) = 3sqrt x^4 -1 (b) = x^4 -1 (c) = 6sqrt x+1 These answers are wrong but I do not know how to do this
49. ### Pre-Cal

Find the vector v with the given magnitude and the same direction as u. Magnitude: v=3 direction: u=(4,-4) I am not sure what to do here or how to start.
50. ### 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?
51. ### Pre-Calc Help!!!

Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. Sqrt(1-cos50/2)
52. ### Pre-Calc Help!!!!!!!!

Evaluate the expression under the given conditions. sin (A+B); tan A= 12/5, A in quadrant 3, sin B= -3sqrt(10)/10, B in quadrant 4.
53. ### pre-calc helpppp

Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. ã((1-cos50)/2)
54. ### pre algebra check

There are 30 students auditioning for new openings in a chorus. How many ways can you choose 4 students to be in the chorus? 30*29*28*27=657720
55. ### math pre-calc

find an expression for sin (5 theta) as a fifth degree polynomial in the variable sin(theta) ?
56. ### geometry

The scale factor is 5/4. Find the area of the pre-image if the area of the image is 150 in2.Show your work.
57. ### Pre-algebra

Sara is 24 years younger than Joe. Six years ago she was half as old as he was. How old is he now?
58. ### Pre-Algebra

The ratio of men to women at a lecture is 2 to 5. A total of 63 people are at the lecture. How many are men? Explain how you found your answer,
59. ### pre a-p math

a playground is 100ft by 150 ft. you want to make a scale drawing of the playground on a 8.5 by 11 paper what scale could you use? please help
60. ### pre algebra

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

a 50-pound bag of grass seed sells for 292.50. find the unit price of grass seed
62. ### Pre-Calc

Find all solutions of the equation in the interval [0, 2pi). Show all work. sin(x+(pi/6))-sin(x-((pi/6))=1/2
63. ### Pre algebra

The perimeter of a rectangle is 10 m. Twice the width is equal to one- half the length. Find the length and the width.
64. ### Pre-Algebra

The width of a picture is 20 cm. Using a color copier, you reduce the width of the picture to 5 cm. What is the scale factor of the dilation? A)5 B)1/5 C)4 D)1/4*****
65. ### Pre calc

sin(θ − ϕ); tan(θ) = 5/12 , θ in Quadrant III, sin(ϕ) = − square root 10 over 10 ϕ in Quadrant IV Please help last one
66. ### Economics

Suppose that a family's tax liability equaled its income multiplied by one-half minus \$10,000. Under this system, some families would pay taxes to the government, and some families would receive money from the government through a "negative income tax." a. Consider families ...
67. ### 5 Pre-Calculus Questions

1. What is the value of x in the right triangle below? If needed, round your answer to two decimal places. 32 angle, 15 inches, find the x in base… 2. A 10-foot ladder is leaning up against the side of a building so that the top of the ladder reaches the top of the building...
68. ### pre-calc

What is the trigonometric function for cos(-270)? a)1 b)-1 c)0 d)undefined Put cos(-270 degrees) in the google search engine.
69. ### pre-algebra help

Determine which two equations represent perpendicular lines. (a) y = 3/10x -3 (b) y= - 10/3x -3 (c) y = -1/5x + 3/10 (d) y = 1/5x – 3/10 Equations (a) and (b) are perpendicular t one another, because the product of the slopes is -1.
70. ### Pre cal

I am learning interval notation. One of my friends said that besides from '('and '[',there is '{'. Is it true? Is there any " { or }"in interval notation? If yes, what is it used for? Thank you so much :-)
71. ### Math: Pre-Calc

A right triangle has hypotenuse 5 inches long. Its area is 4 square inches. How long are the other sides?
72. ### pre calc

find all local maxima and minima (the y-values) and the vales where they occur g(x) x absolute value 2x+5 absolute value
73. ### pre calc

A ramp leading to a freeway overpass is 470 feet long and rises 32 feet. What is the angle of inclination of the ramp?

Find (a) f X g , (b) g X f, and (c) f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For the f(x) the 3 is little above the sqrt sign. my answers were: (a) = 3sqrt x^4 -1 (b) = x^4 -1 (c) = 6sqrt x+1 These answers are wrong but I do not know how to do this.
75. ### pre algebra

the measures of the angles of (triangle) RST are in the ratio 2:3:5. find the measures of each, and classify the triangle as acute, right, obtuse.
76. ### Pre-Algebra

Can anyone show me step by step how to solve this problem? 26cm/s = m/min convert this problem using dimensional analysis.kj
77. ### pre-cal/ algebra

how is the transformation y=f(x+3)^2+2 affected. f(x) has the vector of (2, -6) so it would move left 3 units and up 2 so the new vector would be (-1,-4)... is that correct
78. ### Pre-Calc

A hall 200 feet in length is to be designed as an ellipse if the foci are 35 feet from the center. How high will the ceiling be from the center?
79. ### Pre-Algebra Math

Emma bought 6 new books for her collection. This increased her collection by 12%. How many books did she have before her purchases?
80. ### Pre-cal

Find the length of side b to the nearest whole number if side a = 105, angle A = 65 degrees, and angle B = 37 degree.
81. ### Pre-Cal.

find all the zeros of the following polynomial. Write the polynomial in fraction form. Show all the work. f(x)= x^4+3x^2-40
82. ### social studies

2013 social studies fair project: A turn in history Walt Disney Pre-Draft Please
83. ### pre algebra

Check whether (-4, -12) is a solution of the system of equations. y = 6x + 12 2x - y = 4 When the graphs of two equations are parallel, there are infinitely many solutions. y = x + 4 y = 3x solution: ( , )
84. ### Pre Chem

A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure?
85. ### Pre ALGEBRA

what are the next three terms in the sequence -6, 5, 16, 27? A)38,49,60 B)37,47,57 C)36,45,54 D)36,46,57 i think its a Am i right Somebody help me please DAMON,MS.SUE, SOMEBODY PLEASE HELP ME
86. ### Pre Algebra

My math question showed me a scientific notation on the calculator which represents (6E-7). My answer to this question is (-6,000,000) am I correct.
87. ### Algebra

I need the answers to pre algebra pizzazz pg 50 How did the angel lose his job I have the riddle I need the work!! Plz help me!!
88. ### 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
89. ### Geometry

A photographer enlarged a picture. If the width of the image is 5 inches and the width of the pre-image was x, what is the scale factor for the dilation in terms of x?
90. ### Vocabulary

In order to change the meaning of the word teach from "to give instruction" to "to give instruction with" you would add the prefix: A. ed B. pre C. er D. co D?
91. ### Maths & numeracy

Loose almonds in a supermarket cost \$6.48 for 250gm, or you can buy 375 gm of pre-packaged almonds for \$10.65. Which is the better buy?
92. ### pre-algerabra

If dexters room is 10 wide and 12'6" long and in his drawing is 4 wide is it true or false if I doulbe the quantity I doulbe the other?
93. ### Pre-Algebra

A sphere and a right cylinder have the same radius and volume. the cylinder has a height of 3 inches find the radius.
94. ### Pre calc

Find an equation for the ellipse described center (0,0); major axis horizontal with length 18; length of minor axis is 4
95. ### Calc or Pre calc

I am having trouble doing this problem. I know how to do indefinate integrals, but I don't know how to do definate integrals. Can you show me how to do this. Evaluate 5 (x^3-2x)dx 2
96. ### Pre-Algebra(please check)

Please check these simplified expressions(my answer is after the ;) 4(2k-6)-8(3-3k); -16k-(-48) 9+(-2k)+(-4)-6k; -8k+5 -x+4x-(-8x)-9+2x+1; 13x+(-8) 5(-3x+6)+8x; -7x+30 8+6x+4-8x; -2x+12 5(-m-3)+4m-10; -9m+5
97. ### pre-algebra

how do i identify the slope snd y-intercept of the graph of each equation. Then graph the equation? plz help asap!
98. ### Pre-Cal

Find an equation of the tangent line to the parabola at the given point, and find the x-intercept of the line. 17) x^2=2y , (-3,9/2) 18) y=-2x^2 , (-1,-2)
99. ### History

How did people differ before the industrialization and after pre World War I to after the end of the war?
100. ### Math (Algebra/Pre-Algebra)

What is the x-intercept of the line with equation 2y + 3x = 24? What is the x-intercept and how do I find it? I have to show work. Thank you!