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Question 457255: FATHER'S AGE IS THRICE THE AGE OF HIS SON,FATHER'S AGE WAS 42 YRS.WHEN SON WAS BORN ,FIND THE FATHER'S AND SON'S AGE WHEN FATHER'S AGE WILL BE 7 TIMES OF THE SON'S AGE.
Click here to see answer by josmiceli(9819)

Question 457353: Market research has shown that at a price of $230, 100 number of plasma TV’s are sold and if the price is reduced to $190, then 200 number of TV’s are sold. Find the equation that represents this demand curve and state in the form of p=mx+b (Slope Intercept Form of a Linear Equation).
I came up with a few possible answers for this question.

m=(p2-p1)/(x2-x1)=(190-230)/(200-100)= -2/5
p= -2/5x+b
b=270
p= -2/5x+270
p=-0.4+270 or would I leave it as -2/5x+270? Im really confused!!!
Click here to see answer by lwsshak3(6770)

Question 457620: Multiply
(4+√7)(6+√7)
Click here to see answer by MathLover1(6815)

Question 457627: The cost of manufacturing clocks is given by c=100√n+49, where c is the total cost and n is the number produced. What is c when no clocks are produced?
Click here to see answer by oberobic(2304)

Question 457676: Evaluate √b^2-4ac if a=-5, b=-4, c=60
Click here to see answer by MathLover1(6815)

Question 457684: Form an equivalent expression by rationalizing the denominator.
24/√17
Click here to see answer by Alan3354(31538)

Question 457705: In a right triangle, find the length of the side not given. Approximate to three decimals, if necessary. Keep in mind that a and b are the lengths of the legs and c is the length of the hypotenuse.
b=4√2, c=9
Click here to see answer by stanbon(57984)

Question 458016: Dear Madam or Sir,
Click here to see answer by richwmiller(9144)

Question 458205: the square of the difference of 6 and a number is 4 less than the number
Click here to see answer by lwsshak3(6770)

Question 458432: A number is multiplied by 4 and increased by 7.
The result is 10 less than 3 times the number.
Which equation will determine the number X?
A. 4x + 7 = 10 - 3x
B. 4x - 7 = 10 - 3x
C. 4x - 7 = 3x - 10
D. 4x + 7 = 3x - 10
I'm not sure if it is A or D ..........
Click here to see answer by richwmiller(9144)

Question 458703: your family recieves basic cable and two movie channels for $32.30 a month. Your neighbor recieves basic cable and four movie channels for $43.30 a month. What is the monthly charge for just the basic cable?(assume that the movie channels have the same monthly cost) what is the monthly cost for one movie channel?
A. Write a system of two equations using two variables
B. solve and put answer in a complete sentence.
Click here to see answer by richwmiller(9144)

Question 458643: Suppose you have a cookie stand, and when you charge $3 per cookie
box you sell 200 boxes. But when you raise your price to $4 you only
sell 120 boxes.
a. Write an equation for the number of boxes you sell as a function of
the price you charge.
b. Denote "B" for number of boxes, and "P" for the price you charge.
c. Assume the function is linear..
Click here to see answer by lwsshak3(6770)

Question 458582: a plane travels at a speed of 190 mph flying with a tail wind the plane is clocked above at a distance of 400 miles. flying against a head wind it takes an hour more time to complete the return trip. what was the winds velocity?
Click here to see answer by lwsshak3(6770)

Question 459212: Divide 32 into two parts such that if the larger is divided by the smaller, the quotient is 2 and the remainder is 5.

Click here to see answer by josmiceli(9819)

Question 459497: a rental car company charges $16 per day plus 14 cents per mile to rent a certain car another agency charges $23 per day plus 10 cents how many miles will have to be driven for the cost of a car agency to equal the cost of the second agency
Click here to see answer by rfer(12731)

Question 459637: Real life situation that could be modeled by a function:
Conversion from a fahrenheit to celsius is given by a function f(C)=5/9 F -32
what is the answer?
Click here to see answer by stanbon(57984)

Question 459706: Billy Joe and Bobby Sue were two young lovers with nothing better to do but go to a local theme park. They spent 1/10 of their funds on parking. 1/3 of their remaining funds were spent to enter the park. They spent 1/2 of the remaining cash on food. After spending 250$ on a vendotoilet they left with 1/5 of their original amount. How much did they bring to the park?
Click here to see answer by richwmiller(9144)

Question 459726: A reservation clerk worked 12.6 hrs one day. She spent twice as much time entering new reservations as she did verifying old ones and one and a half as much time calling to confirm reservations as verifying old ones. How much time did she spend entering new reservations?
Thank you in advance
Chris
Click here to see answer by htmentor(809)

Question 459762: Please help me with this problem
The sum of two numbers is 70 the larger number is two more than three times the smaller number. Find the two number
Click here to see answer by rfer(12731)

Question 459815: A fruit juice company mixes pineapple juice that sells for $5.50 per gallon with 100 gallons of orange juice that sells for $3.00 per gallon. How much pineapple juice is used to make a pineapple-orange drink selling for $3.50 per gallon?
My answer is
$5.50 x + $3.00 (100) = $3.50 (100 +x)
$5.50x + $300 = $3.50(100 + x)
$5.50x + $300 = $350 +$3.50 x
$5.50x =$50 +$3.50x
2 x = 50
X=25. But the book says 75. Please help!
Click here to see answer by mananth(12270)

Question 459824: I would love to know if I did this problem correctly:
The XYZ Corporation plans to open three different types of fast-food restaurants. Each type
A restaurant requires an initial cash outlay of $600,000, needs 15 employees, and is expected to make
an annual profit of $45,000. Each type B restaurant requires an initial cash outlay of $400,000, needs
9 employees, and is expected to make an annual profit of $35,000. Each type C restaurant requires an
initial cash outlay of $300,000, needs 5 employees, and is expected to make an annual profit of
$25,000. The XYZ Corporation has $48,000,000 available for initial outlays, does not want to hire
more than 1000 new employees, and would like to open at most 70 restaurants. How many restaurants of each type should the XYZ Corporation open in order to maximize the expected annual profit?
Let x = number of type A restaurants, y = number of type B restaurants, and z = number of type C
restaurants.
I said
{x+y <=40
x+y >=10
x <= 30
y <= 25
x,y>= 0
Click here to see answer by solver91311(17077)

Question 459896: Mary can purchase roses and daisies from a flower shop. She can buy four roses and five daisies for $7.90 or two roses and six daisies for $5.70. what is the individual cost for each rose and daisy.
Click here to see answer by mananth(12270)

Question 460060: Soybean meal is 16% protein and Cornmeal is 8%. How many pounds of each should be mixed together in order to get 320 pound mixture that is 15% protein?
Click here to see answer by mananth(12270)

Question 460384: A bike is purchased new for $1800. After 5 years it is sold as scrap for $200.
Find a linear equation for V(t), the value of the bike at t years...

Thanks in advance.
Click here to see answer by josmiceli(9819)

Question 460568: i.The difference between six times a number and fouris negative fourteen. Find the number.
2.One slice of cheese pizza contains 290 calories. A medium-size orange has one fifth that number of calories. How many calories are in a medium-size orange?
3.A university employs a total of 600 teaching assistants and resaerch assistants. There are three times as many teaching assistants as research assistants. Find the numberof research assistants employeyed by the university.
4. A technical information hotline charges a customer $9.00 plus $.50 per minute to answer question about software. How many minutes did a customer who received a bill for $14.50 use this service?
Click here to see answer by solver91311(17077)

Question 460483: a disc jockey now charges $13580 for a full nightof music. recently decreaseed his price by 8%. what did he charge before the decrease
Click here to see answer by rfer(12731)

Question 461134: Consider the system y=a and x=b where a and b are real numbers. Is this system dependent or independent? Is it consistent or inconsistent? Describe the system. If it is consistent, what is the solution?
Click here to see answer by richard1234(5390)

Question 461170: The smallest of three consecutive even integers is 8 less than 3 times the largest. What are the integers?
Click here to see answer by mananth(12270)

Question 461267: Find an equation of the line with the given slope and y-intercept.
Slope = -7, y-intercept: (0, -13)

Click here to see answer by rfer(12731)

Question 461562: The product of a number and 5 more than twice the number is 75. Find the number.
How would you figure this out?
Click here to see answer by sudhanshu_kmr(1152)

Question 461741: "Jenny has 8 books overdue at the library. She remembers that she checked out 3 math books two weeks before she checked out 5 children's books. The daily fine per book is $0.15. If her total fine was $9.90, how long was each book overdue?
Click here to see answer by rwm(914)

Question 461736: Jenny has 8 books overdue at the library. She remembers that she checked out 3 math books 2 weeks before she checked out 5 children's books. The daily fine per book is $0.15. If her total fine was $9.90, how long was each book overdue?
Click here to see answer by rwm(914)

Question 461796: Please help with this problem.
Ricks Pain Store sells a special shade of paint (Rick's Blush) which can be made from red paint and white paint. The amount of red paint should be three times the amount of white paint. How much of each kind of paint is needed to make 264 gallons of Ricky's Blush?
I have no idea to where to begin. When I read the problem I wrote this down....
R= red paint
W= white paint
3R + W = 264
Click here to see answer by solver91311(17077)

Question 462093: How do you sketch a graph of T> 150 - 0.7A
-
I have worked the problem out where T = -108 and -136. I had to find out the heart rate of a 20 year old and a 60 year old.
The problem was written as such;
T+150-0.7a
I am unable to give you the correct sign up top. It is > with the - right up under the >.
Click here to see answer by stanbon(57984)

Question 462524: In 1960, the average American disposed of 2.7 pounds of garbage per day, whereas in 2003 this amount was 4.3 per day? How to make this a linear function?
Click here to see answer by math-vortex(472)

Question 462728: Find a number whose double is 45 greater than its half?
Click here to see answer by robertb(4012)

Question 462975: The perimeter of a rectangle is 28cm the length of the rectangle is 6cm more than its width. What is the length of the rectangle?
Click here to see answer by algebrahouse.com(1079)

Question 463443: the difference between six times a number and twelve equals the sum of the number and 13. find the number
Click here to see answer by amoresroy(333)

Question 463625: adult tickets sold for 5 dollars
student tickets sold for 2 dollars
a total of 16 tickets were sold and a total of 62 dollars was colleceted
let x = # of adult tickets
let Y = # of student tickets
write a linear system that represents this situation
Click here to see answer by aliateach(10)

Question 463735: Solve each problem by forming a pair of simultaneous equations.
1) Twice one number added to three times another gives 21. Find the numbers, if the difference betweeb them is 3.
Click here to see answer by reviewermath(605)

Question 464079: Please help me to solve this problem. If is a cost function, how fast is marginal cost changing when q=100 ?
Click here to see answer by nerdybill(7012)

Question 464089: In a certain election, there were only two candidates. The winner won by 120 votes,receiving 65% of the votes cast. By letting the number of votes of the two candidates be x and y, find how many people voted.
Click here to see answer by ewatrrr(10682)

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