# Pre- Calculus

21,396 results, page 40

### math pre-calc

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

### 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.

### 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?

### 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,

### 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

### pre algebra

three of every seven sales transaction are on credit cards, what percent of the transactions are not on credit cards

### pre-algebra

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

### 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

### 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.

### 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*****

### 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

### 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...

### 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 ...

### 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.

### 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.

### 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 :-)

### Math: Pre-Calc

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

### 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

### 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?

### Pre-Cal(Please help)

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.

### 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.

### 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

### 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

### 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?

### 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?

### 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.

### 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

### social studies

2013 social studies fair project: A turn in history Walt Disney Pre-Draft Please

### 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: ( , )

### 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?

### 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

### 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.

### 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!!

### 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

### 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?

### 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?

### 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?

### 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?

### 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.

### Pre calc

Find an equation for the ellipse described center (0,0); major axis horizontal with length 18; length of minor axis is 4

### 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

### 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

### pre-algebra

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

### 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)

### History

How did people differ before the industrialization and after pre World War I to after the end of the war?

### 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!

### Pre-cal/Trig

(tan/(1+sec)) + ((1+sec)/tan) = 2csc (Show all work please.)

### Environmental problems

How did pre-modern Europeans understand and deal with what we would today call environmental problems?

### pre algebra

solve the equation step by step.list each step along with the property you used during that step. -5 x 1 x 11 x 4

### Pre Algebra

Mike spent $40 at the music store. He bought a cd for $20 and some cassettes for $4 each. How many cassettes did mike buy?

### pre-calc help

Convert the rectangular coordinates to polar coordinates with r > 0 and 0 ≤ θ < 2π. (9, −9) (r, θ) = ?

### pre-calc help

Convert the rectangular coordinates to polar coordinates with r > 0 and 0 ≤ θ < 2π. (9, −9) (r, θ) = ?

### Pre-Algebra

How do I write a scale for a scale model whose dimensions are 20 times the dimensions of the actual object?

### Pre algebra

Will has a mean score of 62 on the first five test in science. if he gets a 50 on the next test what will his mean be then?

### Pre-Algebra

A recipe asks for 1 1/2 cups of chocolate chips for 60 cookies. How many cups would be needed for 36 cookies?

### pre-calc 12

Determine the magnitude of an earthquake that is 200 times as intense as an earthquake of magnitude 3.7 on the Richter scale.

### 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

### Pre-Algebra

Matthew is 5 years older than twice the age of his sister. If Matthew is 13, how old is his sister? 3 4 9 31 I think she is 3 or 4

### pre Algebra

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

### Pre calc

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

### Calculus-math

If g(x) is the inverse of f(x), g(x)=f^-1(x), such that g(3)=5 and f'(5)=4 what is the value of g'(3)????? :O 2. If g(x)is the inverse of f(x), g(x)=f^-1(x), such that f(3)=15,f(6)=3,f'(3)=-8,and f'(6)=-2. What is the value of g'(3)???????? Calculus--

### Calculus POSTS please check

Please check my calculus posts. They are at the bottom. Thanks.

### Pre-Cal

Find the 5 roots of x^5+1=0 in polar and Cartesian form. (x^5 means x to the 5th power) x^5 = -1 = e^[i (2n + 1) pi] where i is any integer x = [e^[i (2n + 1) pi]]^(1/5) = e^(i pi/5)= cos pi/5 + i sin (pi/5) = e^(3 i pi/5) = cos (2 pi/5) + i sin (2 pi/5) etc.

### math pre-algebra

N to the power of negative 5 N to the power of negative 5 is aready in its simplest form. Unless you know the value of N, this problem can't be solved any further.

### pre-algebra

The problem really said convert 3 seconds into days. Then the next question was convert 2 inches into yards.

### pre calcu

A ball is droped out of a window of a tall building. If it hists the ground 3.5s later, how high aboe the ground is the window?

### Pre-Algebra [urgent!]

I can't find the solution to this problem; can someone please show me how to solve it step-by-step? Solve the equation for y in terms of x: 1. -8x + 5y = 10 Thanks! -MC

### Pre-Algebra

Here are some more of those same type of questions as my other posts: x - 6= y (12,6) (10,4) (8,2) 2x - y= 10 (5,0) (6,2) (7,4) 4y - 3x = 12 (8,3) (0,3) I NEED ONE MORE FOR THIS ONE Thanks! -MC

### Pre-Cal

Find the component form of v given its magnitude and the anlge it makes with the positive a-axis. v=3 v in the direction 3i + 4J Would the component form be (3,4)?

### pre calc

suppose beta is an angle in the second quadrant and tan beta=-2. Fine the exact vaule of sin beta and cos beta

### Pre-cal

Please determine the following limit if they exist. If the limit doe not exist put DNE. lim 2x^3 / x^2 + 10x - 12 x->infinity. Thanks.

### pre-cal

Use logarithms to solve log 8 / log x < 1. I understand that there are 2 cases: when x is negative or positive. I don't understand how it affects the answer though.

### pre algebra

the measure of the angles of triangle RST are the ratio 2:3:5. find the measure of each angle, and classify the triangle as acute, right or straight

### Pre-Algebra

Can anyone show me step by step how to solve this problem? 26cm/s = m/min convert this problem using dimensional analysis.What is the answer and how did you get it?Thanks,kj

### pre-algebra-is my answer right

Rewrite the expression without using a negative exponent. 4z^-4 Simplify your answer as much as possible. is this right? (1/4z^4)

### Pre Algebra

Find the Original Amount: NEW AMOUNT: 210 75% INCREASE **please help me as soon as possible and explain steps please!**

### Pre Chem

How much heat will be produced when 16grams of C2H6 burns? The reaction is 2 C2H6 + 7 O2 --> 4CO2 + 6 H20 triangle heat = -350kJ

### pre calc

The minute hand of a clock is 7 inches long. How far does the tip move in 16 minutes? a.56/15pi b.8/105pi c.4/105pi d.28/15pi

### pre-algebra

One side of a rectangle is 6 in and the other side is x inches. Find the possible value of x if the area must be at least 84 sq inches.

### Pre-Calc

Evaluate the expression without using a calculator(show work please)? (sin pi/4 cos pi/6 - sin pi/6 cos pi/4) the answer is 1/4(2-ã3)

### pre-ap math

the diagonal of a rectangular poster is 25 in. The width is 15 inches. If madison wants to put a border on the edge of the poster , how many inches will she need to buy?

### pre calc

Find all solutions of the equation 3sin^2 x -7sin x +2 = 0 in the interval [0,2pi). The answer is x_1= ?? and x_2= ?? with x_1<x_2.

### geometry

if a scale factor of four is used, the points in the image will be eight times as far from the origin as at he pre-image points true or false

### Pre-Alegebra

A 25 foot tall flagpole cast =s a 20 foot shadow. If a man with a height of 6 feet stands nearby, what will be the lenghth of this shadow?

### Pre algebra

25ft piece wire cut into 2 pieces one piece is 19ft shorter than the other piece how long was each piece

### Pre-cal

The equation of the line joining the complex numbers -5 + 4i and 7 + 2i can be expressed in the form az + b*overline{z} = 38 for some complex numbers a and b. Find the product ab. Any help?

### Pre-Calc.

Change the exponential statement 5^x=125 into an equivalent logarithmic statement. I know the answer is log5(125)=(x) Just don't know the steps to get it.

### pre-calc - JAI

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2+5+8+...+(3n-1)=n(1+3n)/2

### pre algebra

it took us 3 hour to drive to a concert.on his way home he increased his speed by 19 miles got home in 2 hours . what was the speed

### pre calc

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2 is a factor of n2 + 7n

### pre calc

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2 is a factor of n2 + 7n

### pre-algebra

The width of a rectangle is 30 centimeters. Find all possible values for the length of the rectangle if the perimeter is at least 768 centimeters.

### Pre-Calc

Verify the identity. Show your work. cot2x + csc2x = 2csc2x - 1 1+cosec^2x +cosec^2x Cot^2x+cosec^x= 1+2 cosec^2x Would this be correct?

### pre-algebra

A submarine at the surface dives 375 ft and then another 175 ft. Express the final depth as an integer. A. –525 ft B. –550 ft C. 550 ft D. 525 ft C?

### Pre-Cal

Suppose that cosx= -3/5 and x is in the third quadrant, and that siny= 2/9 and y is in the second quadrant. Find the exact values 1). tan(y/2) 2). cos(x+y) 3). tan(x+y)

### math

Please does anyone have ANSWERS for the UNIT 7 LESSON 8 SYSTEMS OF EQUATIONS AND INEQUALITIES? FWI: It's Algebra 1 NOT PRE algebra please if I fail I'll get an F!!!!!!!

### Pre calc

sin(θ − ϕ); tan(θ) = 5/12 θ in Quadrant III, sin(ϕ) = − sqaure root 10/10 ϕ in Quadrant IV I tried this numerous times can somone please help me

### pre-calc

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2 is a factor of n^2 + 7n

### Pre- Algebra

If you were to roll a fair number cube 120 times, how many times would you expect to roll a 4 based on theoretical probability