Monday
September 26, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

Math
Calculate y' and y'' at the point (1,1) on the curve 5 xy^2+9 y-14 = 0 I got the first part (-5/19) but I can't get the answer for the second
Tuesday, July 12, 2016 by Ed

math
Emmanuel wants to tile his rectangular floor. one of which is larger than the other. a)what area will be covered by the "8x8"tile? "16x16" tile?
Tuesday, July 12, 2016 by Anonymous

Math - Studying for Pre Calc exam!
Approximate the solutions (to three decimal places) of the given equation in the interval (- pi/2, pi/2) 6 sin 2x − 8 cos x + 9 sin x = 6 Can you help with this please? I am studying for my Pre Calculus 1 exam and am stuck on this question...! The answer options are a. x...
Tuesday, July 12, 2016 by Lottie

math
Find the orthogonal trajectories of family of the circle x2+y2=a2 where a is a parameter
Tuesday, July 12, 2016 by mahesh

Math
Find all solutions of the given equation in the interval [0, 2pi) cos x/2 - sin x = 0 Hi, I am struggling with this question. Can anybody help me please? Thanks!
Tuesday, July 12, 2016 by Lottie

math
If 3 times a positive number is added to the half of its square the result is 8 find the number
Tuesday, July 12, 2016 by md nasim

math
dy/dx=xyforx=1.4 intially x=1 y=2(take h=0.2
Tuesday, July 12, 2016 by savan

Math Please Help
The function Q(x) has been transformed from the function f(x) = x^4. The mapping rule for the function can be written as (2x + c, 4y + d). If the coordinate(1/2 ,1/16) on the function f(x) is transformed to (3,5) on Q(x), determine the value of c and d.
Tuesday, July 12, 2016 by Squad

algebra 2
x2 + 2x – 10/ 3x – 15 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as demonstrated in ...
Monday, July 11, 2016 by peaches

algebra 2
16t^2 – 1/64 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as demonstrated in the example). ...
Monday, July 11, 2016 by peaches

Math
The temperature deceased due to increase in altitude at the rate of 8 degrees Celsius per 1500 m the temperature at 4500 m above the ground level is 4 degrees Celsius find the temperature at ground level and at an altitude of 9000 m
Monday, July 11, 2016 by Anonymous

MATH
A beautiful Princess is locked inside the Castle. A Moat 15 metres wide surrounds the Castle. A Knight is attempting to rescue the Princess but he only has two planks of wood, both 14.5 metres long. How can the brave Knight bridge the Moat and rescue the Princess. Draw ...
Monday, July 11, 2016 by Sandy

Math
Write the equation of a rational function in the form of 𝑓(𝑥) = 𝑎𝑥+𝑏/𝑐&#​119909;+𝑑 if the vertical asymptote is x =5, the horizontal asymptote is y=2, the x-intercept is (-1/2 , 0) and the y-intercept is (0,-1/5 ).
Monday, July 11, 2016 by Squad

Math Please Help ASAP
The function 𝑄(𝑥) has been transformed from the function 𝑓(𝑥) = 𝑥^4 . The mapping rule for the function can be written as (2𝑥 + 𝒄, 4𝑦 + 𝒃). If the coordinate(1/2 ,1/16) on the function 𝑓(𝑥...
Monday, July 11, 2016 by Matt

Math - Transformations
State the transformation for g(x) = -2 (2x - 4)³ - 1 Would it be a vertical stretch by a factor of 2 a reflection in the x-axis a horizontal stretch by a factor of 1/2 a translation 4 units right and 1 unit down Am i right?
Monday, July 11, 2016 by Jen

math
A theater group made appearances in two cities. The hotel charge before tax in the second city was $500 lower than in the first. The tax in the first city was 6%, and the tax in the second city was 4.5% The total hotel tax paid for the two cities was $292.50 . How much was the...
Monday, July 11, 2016 by jazmine

math
Two mechanics worked on a car. The first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they charged a total of $2025 . What was the rate charged per hour by each mechanic if the sum of the two rates was $205 per hour
Monday, July 11, 2016 by jazmine

MATH
Rewrite equation w=exp(2y+8z-3x) as the product of three terms. note that writing exp(a) is the same as writing e^a
Monday, July 11, 2016 by DANIELLE

math please help?! studying for test!!
If x = 9tanθ, use trigonometric substitution to write square root 81 + x^2 as a trigonometric function of θ, where -pi/2 < θ < pi/2
Monday, July 11, 2016 by sophie

math help?!
If x = 6sinθ, use trigonometric substitution to write square root 36-x^2 as a trigonometric function of θ, where where 0<θ< pi/2
Monday, July 11, 2016 by sophie

MATH
SIMPLIFY THE FOLLOWING EXPRESSION: Z=LOG(E^5Y) i MOVED THE EXPONENT TO THE FRONT: Z=5YLOGE IS THIS CORRECT?
Monday, July 11, 2016 by DANIELLE

MATH
REWRITE EQUATION W=EXP(2Y+8Z-3X) AS THE PRODUCT OF THREE TERMS
Monday, July 11, 2016 by DANIELLE

Math
The function −2𝑓(2𝑥 + 4) − 1 has been transformed from the graph of 𝒇(𝒙) = 𝒙^𝟑 Write the equation for the transformed function.
Monday, July 11, 2016 by Jen

math
Write the given expression as the tangent of an angle. tan 7x − tan x/ 1 + tan 7x tan x
Monday, July 11, 2016 by terry

math
Write the given expression as the cosine of an angle. cos 60° cos 65° − sin 60° sin 65°
Monday, July 11, 2016 by terry

Math
Describe the end behaviour of 0.5(x-2\)^2\(x+1)(x-5)^3
Monday, July 11, 2016 by Matt

Math
A polynomial function with a degree of 6 has the zeros of 𝑥 = 2 (order 2), 𝑥 = −1 (order 1) and 𝑥 = 5 (order 3). Write a general formula for a family of functions that share the same properties as this function. Please HELP!
Monday, July 11, 2016 by Matt

math
A man buys a corporate bond from a bond brokerage house for $925. The bond has a face value of $1000 and a 4% coupon rate paid semiannually. if the bond will be paid off at the end of ten years, what rate of return will the man receive?
Monday, July 11, 2016 by sheree

Math
Directrix at y=3,axis x=2 Latus rectum 4
Monday, July 11, 2016 by Josa villa

math
volume of equilateral triangle with and area of 6 sq inches and height of 15 inches
Monday, July 11, 2016 by taylor

math
Use a graphing utility to approximate the solutions (to three decimal places) of the given equation in the interval (-pi/2, pi/2) a. 1 b. –1 c. 1/2 d. 2 e. 0
Monday, July 11, 2016 by megan

math
Use a graphing utility to approximate the solutions (to three decimal places) of the given equation in the interval square bracket0, 2π) sin 2x + 1.5 cos x = 0 a. x = 1.624, 1.932, 5.776, 5.997 b. x = 1.055, 3.785, 4.652, 5.721 c. x = 1.101, 2.118, 3.982, 5.104 d. x = 1....
Monday, July 11, 2016 by megan

math
Kyle opened a bank account with $450. He deposits $58.50 each week. Write a function that shows the amount he has after w weeks. What is the function.
Monday, July 11, 2016 by kyle

Math
Directrix at y=3,axis x=2 Latus rectum 4
Monday, July 11, 2016 by Josa villa

math
the building supply store sells one liter bottles of water for $1.09 approximately how many 8 ounce servings of water in 1 liter
Monday, July 11, 2016 by chris

math
the kitchen is 12 ft wide and 14 ft long how many six inch tile will I need to cover the floor
Monday, July 11, 2016 by mike

Math
Ivan finished 4/5 of his math homework problems and all 3 questions for his science homework before dinner . If he finished a total of 43 problems before dinner , what is the total number of math homework problems he was assigned?
Monday, July 11, 2016 by Janeya

math
what number whose sum of its digit is 26 becomes 6000 when rounded to the nearest thousand.
Monday, July 11, 2016 by Anonymous

Math
How may ordered pair of positive integers satisfy the condition p+q+12=pq
Monday, July 11, 2016 by Madhura

Math
The volume V of gas varies inversely as the pressure P on it. If the volume is 240 cm^3 under pressure of 30 kg/cm^2, what pressure has to be applied to have a volume of 160 cm^3 ?
Monday, July 11, 2016 by Gennelle

math
It has been observed that a particular plant's growth is directly proportional to time. It measured 2 cm when it arrived at the nursery ang 2.5 cm exactly one week later. If the plant continues to grow at this rate, determine the function that represents the plant's ...
Monday, July 11, 2016 by Gennelle

Math
the length of a garden is 4 more than the width.if the perimeter is at least 63 m and ar most 95 m what is the maximum possible integral length of the garden
Monday, July 11, 2016 by Queen

Math
A large balloon has a volume of 2.50 L at 0 C. At what temperature 0 C will the volume of the gas be 3.60 L Assume constant temperature
Monday, July 11, 2016 by Tina

math
if a tax meter registers 20 pesos plus 5 pesos per kilometer covered. express the amount T registered in the taxi meter as a function of the number of kilometers covered
Monday, July 11, 2016 by kyle

Math
One site added 0.5 million new accounts everyday. At this rate how many days will it take to add 25 million new accounts
Sunday, July 10, 2016 by Shon

math,maths
solve (x+2)/x>=0.2 with steps
Sunday, July 10, 2016 by Neh

Math
Consider the following word problem: It took Eric 10 hours to drive to a job interview. On the way home, he was able to increase his average speed by 21 mph and make the return drive in only 7 hours. Find his average speed on the return drive. Step 1 of 3: Complete the ...
Sunday, July 10, 2016 by Teri

math
There were 369 tickets purchased for a major league baseball game. the lower reserved tickets cost $9.50 and the upper box tickets costs $10.00. The total amount of money spent was $3645. How many each kind of ticket were purchased?
Sunday, July 10, 2016 by math problem

Math
The Abc company sells bottles of shampoo for $9 each. It costs the company $3 to make each bottle and they have fixed costs of $4700 each month. If x represents the number of bottles the company makes and sells each month, write he company's profit function
Sunday, July 10, 2016 by Anonymous

Math
A company selling cell phones has a total inventor of 800 phones. Of these phones, 400 are smartphones and 240 are black. If 200 phones are not black and not a smartphones, how many are black smartphones?
Sunday, July 10, 2016 by Anonymous

Math
Bobs car gets 23 miles per gallon of gas. If bobs car is traveling at a constant rate of 69 miles per hour, how may gallons of gas will his car use in 40 minutes?
Sunday, July 10, 2016 by Anonymous

math
what is the ninth angle of a nonagon if the others are each 124 degrees
Sunday, July 10, 2016 by barira

Math
From a window A,10m above the ground, the angle of elevation of the top C of a tower is x degrees,where tan X=5/2 and the angle of depression of the foot D of the tower is y degrees, where tan y=1/4.calculate the height Cd of the tower in metres.
Sunday, July 10, 2016 by Naina

math
If a lab technician has a salary of 22000 her first year and is due to get a 500 raise each year, then what will her salary be in her seventh year? What is the total salary for 7 years of work for the lab technician?
Sunday, July 10, 2016 by franz

Math
At a party one hundred and twenty people danced. The girls all started dancing one after the other. Tina was first girl who danced with seven men,Reena the second girl who danced with eight men, Sheela the third girl who danced with nine and so on up to Raveena who danced with...
Sunday, July 10, 2016 by Madhura

Math
Use the value sin x = 1/ 2 and cos x > 0 to find the values of all six trigonometric functions. Leave your answer in exact form, not in decimal
Sunday, July 10, 2016 by Katie

math
Good pm, please help me to my homework. Thank you How to calculate an ordinary interest given a principal rate of 500,00 , at a rate of 18%, that will be due within 394 days? Find the ordinary interest
Sunday, July 10, 2016 by lester

math
One hundred cards are numbered from 1 to 100. What will be the probability that a randomly chosen card has a digit 5?
Sunday, July 10, 2016 by Nandik

math
Of the three angles of a triangle one is twice the smallest and another one is thrice the smallest. Find the angles
Sunday, July 10, 2016 by krishna

Math
2. The following is a random sample of grades achieved on statistics examination by 10 male students in a very large class and a random sample of grades achieved by 8 female students. Male 78 87 75 64 90 80 65 86 74 81 Female 71 50 80 75 90 61 85 81 Test at  = 0.01 ...
Sunday, July 10, 2016 by Paulo

math
A community park wants to place a rectangular billboard to inform guests of their new attractions. Suppose the length of the billboard to be placed is 5m longer than its width and the area is 500m2. What will be the length and the width of the billboard? Let w be the width of ...
Saturday, July 9, 2016 by lara

Math(HELP PLEASE )
solve the system. x=2-y and 3x+3y=6 parallel coincident 4,-2 1,1 I chose the last one and its incorrect
Saturday, July 9, 2016 by Fe

Math
Explain the relationship among ​input​, ​output​, and ​function rule​.
Saturday, July 9, 2016 by Help!!!

math
solve the system. Give the x-value of the solution. 3x-5y=16 and -9x+15=48 answer key: 7 0 no solution infinite number solution
Saturday, July 9, 2016 by Fe

math 10
Dan and Leanne's mortgage payments takes 2/3 of Dan's take home pay every month. His cheque is $785.50 in the middle of the month and $739.50 at the end of the month. Give the amount of the monthly mortgage payments.
Saturday, July 9, 2016 by Anonymous

Math
Explain the relationship among ​input​, ​output​, and ​function rule​.
Saturday, July 9, 2016 by Still yo girl

Math (money)
HIII!!! I NEED HELP ON MATH! PLEASE HELP! Melissa has spent $17 so far on gifts. The additional amount she will spend will be more than $8. What are the possible total amount she will spent? Use c for the total amount (in dollars) she will spend.
Saturday, July 9, 2016 by Fei

Math
Rewrite 47.10° in radian measure. Round to three decimal places. a. 0.164 b. 0.099 c. 0.822 d. 0.123 e. 0.148
Saturday, July 9, 2016 by Anonymous

Math
12 hundreds 9 thousands is Equal, lesser than, greater than 129000.
Saturday, July 9, 2016 by Loriel

math
an only so inherited a 3/4 hectare lot . hi decided to bulid a 40-door condominium on the lot. the floor area of the units is uniform and the total floor area of the entire condominium is 1/5 less than the area of the lot to provide foe certain amenties compute for the floor ...
Saturday, July 9, 2016 by deepz

Math
A straight line AB of length 10 units is free to move with its end on the axes.find the locus of the point p(x,y) on the line at the distance of 3 units from the end on the x-axis
Saturday, July 9, 2016 by Nestoryngeleja

math
6 red balls and 5white total 20balls how many yellow balls find probility
Saturday, July 9, 2016 by math

math
If the area of a square carpet is 25 m than what is the length of each side
Saturday, July 9, 2016 by wania

discrete math
1.Let functions f and g be defined by f(x)=2x+1, and g(x)=x^2-2, respectively. Find a)(gof)(a+2) b)(fog)(a+2) 2.Let A={x:x≠2) and define f: A→R by f(x)=4x/(2x-1) . Is f is one- to- one? Find the range of f . Then find f^(-1) and hence determine the domain and ...
Saturday, July 9, 2016 by rose

number magic(math)
Paper draw rectangle with perimeter 12cm. 1. How many rectangle could you draw?
Saturday, July 9, 2016 by simran

math
Consider the cost function C(x)=x^3-3x^2+100x-10, discuss its domain
Saturday, July 9, 2016 by princess

math-steve
When Mr. Lucky starts betting, he has 3 dollars. On any bet, he wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has. Mr. Lucky’s objective...
Friday, July 8, 2016 by andre

Math
Ali went to the supermarket to buy 3 sweets and 8 bars of chocolate. He paid $29. If 8 sweets and 3 bars of chocolate cost $15, find the average cost of 2 sets and 2 bars of chocolate.
Friday, July 8, 2016 by William

Math
(4,?) is on the line y=2x+3. Find the other half of the coordinate
Friday, July 8, 2016 by Jarret

Math
In a three digit number, the digit is twice the units digit and the hundreds digit four times the unit digit .also,the sum of its digits is14 .find the number
Friday, July 8, 2016 by Ritika

Math
Unit rate or unit cost -Driving 240km in 4 hours -$22.80 for 3 hours of work What is the answer
Friday, July 8, 2016 by Anonymous

discrete math
Let R be a relation "is located in" from set x of y of countries. state each the following in words and state whether the statement is true or false. a)(Bangi,Selangor) b)(Kota Bharu,Johor) c)(Miri,Sabah) d)(Pekan, Pahang)
Friday, July 8, 2016 by rose

math
Find the coordinates of the focus, the lenth of the lactus rectum and coordinates of its endpoints and the equation of the directrix, then sketch each curve of 2y^2=8x.
Friday, July 8, 2016 by jay anne marie

Math
8a+2a
Friday, July 8, 2016 by Ali

math
``My hundreds digit is 4 less than my tens digit. my ten thousands digit is 6 greater than my hundreds digit. my thousand digit is 5 less than my ten thousand digit and my ones digit is 6 greater than my hundred digit. if my tens digit is 7, what number am i ?''.
Friday, July 8, 2016 by mitch

math
express 84 minutes as a fraction of 4 hours
Friday, July 8, 2016 by karl

math
Let R be a relation on A={2,3,4,6,9} defined by "x is relatively prime to y", that is the only positive divisor or x and y is 1. a)write R as an ordered pair b)Draw a diagraph representing R c)Find the in-degree and the out-degree of each vertex d)List all paths of ...
Friday, July 8, 2016 by rose

math
what is the difference between C and IX?
Thursday, July 7, 2016 by aya corneto

math
A carpenter wants to use a 12-foot ladder to reach a window that's 10 feet high. Which formula would you use to determine how far to place the ladder from the base of the house?
Thursday, July 7, 2016 by lissy

Math
Nadine dives with a senior swim club. In a dive off a 10m platform she reaches a maximum height of 10.5m after. 35s. How long does it take her to reach he water?
Thursday, July 7, 2016 by Jay

math
4/9of a group of students are girls .if there are 17more boys than girls ,how many students are there altogether
Thursday, July 7, 2016 by jyoti

math
A family has two cars. The first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of 25 miles per gallon of gas. During one particular week, the two cars went a combined total of 1275 miles, for a total gas consumption of 45 gallons...
Thursday, July 7, 2016 by jazmine

Business Math
a new piece of equipment cost $18,000 with a residual value of $600 and an estimated useful life of five year. Assuming twice the straight-line rate, the book value at the end of year 2 busing the declining-balance method
Thursday, July 7, 2016 by KayKay

MATH Function Transformation
for function if the a value 1/2 is it a stretch of 1/2 or a compression of 2. Or is both correct!
Thursday, July 7, 2016 by Matt

Math
If you ride a bike for 75 minutes and goes a distance of 15.4 miles how many mph did you go!
Thursday, July 7, 2016 by Jeannie

math
Explain two ways that you can solve for R in the following division statement. Then, use one of your methods to find R. x^3+4x^2-3x=(x-1)(x^2+5x+2)+R could you divide x^3+4x^2-3x by (x-1) to get the quotion of (x^2+5x+2)+ the remainder which would be r? Also what would be ...
Thursday, July 7, 2016 by Matt

Math Please Help
Simon travels north and south from Main Station. The distance, in km, of the train from Main Station is modeled by the function d(t)=t^3-9t^2+6t, where North is positive and South is negative. Time elapsed after the start of a shift, in hours, is represented by t, where &#...
Thursday, July 7, 2016 by Jen

math
The angle of elevation of the top of a tower from a point on a level ground 450m away is 20° find how high the tower is from the ground
Thursday, July 7, 2016 by lise

math
Given that the range of a polynomial function is {y | y <= 5, y ER}, do you have enough information to make any conclusions about the leading coefficient or degree? (er is all real numbers)
Thursday, July 7, 2016 by Anonymous

math
For what value of 𝑚 will the polynomial 𝑃(𝑥) = 2𝑥 3 − 𝑚𝑥 2 + 9𝑥 − 11 have the same remainder as when it’s divided by (𝑥 − 2) and (𝑥 + 3)?
Thursday, July 7, 2016 by Anonymous

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