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December 20, 2014

Homework Help: Math

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Recent Math Questions

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math
A baloon is 200 m off the ground and rising vertically at the rate of 15 m/sec an automobile passes beneath it travelling along a straight road at a constant rate of 45km/hour how fast is the distance between them changing one second later???
Sunday, November 23, 2014 at 6:50am

Math (trig)
The distance from home plate to dead center field in a certain baseball stadium is 409 feet. A baseball diamond is square with a distance from home plate to first plate base 90 feet. How far is it from first base to dead center field? I also need help setting this up.
Sunday, November 23, 2014 at 1:58am

Math (trig)
A force of 35lb is required to hold a 72lb toolbox on an incline. What angle does the incline make with the horizontal? Please help me set this up.
Sunday, November 23, 2014 at 1:56am

math
In how many different ways can two pennies, three nickels, four dimes, and five quarters be arranged in a row?
Sunday, November 23, 2014 at 1:14am

Math
Hello i am doing assignment in my math 20-2 class. The question is: data collected of cars passing on the road revealed that the average speed was 90 km/h with a standard deviation of 5 km/h and the data which is normally distributed a policeman is assigned to set photo radar ...
Saturday, November 22, 2014 at 11:43pm

Math
I also need help with Find the component form of v if absolute value of v=2 and the angle it makes with the x-axis is 30 degrees. I cannot find a book example. help me.
Saturday, November 22, 2014 at 9:14pm

Math
Find the angle between the vectors u and v if u=<-4,3> and v=<-3,2>, and Round answer to two decimal places. I found that it is (12*sqrt13)/65, my point of confusion is how do I find the angle?
Saturday, November 22, 2014 at 9:12pm

Math
Round to the nearest hundredths 23.456
Saturday, November 22, 2014 at 7:36pm

math
what is 1/3 divide 5/8
Saturday, November 22, 2014 at 4:12pm

math
5/7 times9/10
Saturday, November 22, 2014 at 4:08pm

statistics
Hello i am doing assignment in my math 20-2 class. The question is: data collected of cars passing on the road revealed that the average speed was 90 km/h with a standard deviation of 5 km/h and the data which is normally distributed a policeman is assigned to set photo radar ...
Saturday, November 22, 2014 at 2:27pm

math
1/3 divided by 5/8
Saturday, November 22, 2014 at 1:19pm

math
4/5 times 3/4
Saturday, November 22, 2014 at 1:12pm

math
4/3 times 3/4
Saturday, November 22, 2014 at 1:08pm

Math
Resolve in partial fractions (x+6)/((x^2+1)(x-2)^2) Using let x = ...
Saturday, November 22, 2014 at 10:37am

Math
A ball rebounds the ground to a height of 72 cm, and each time it rebounds to two thirds of the height. Estimate the total distance the ball travels before it comes to rest
Saturday, November 22, 2014 at 8:28am

Math
The fourth term of A P is 37 and the 6th term is 12 more than the fourth term.find the first and the seven terms
Saturday, November 22, 2014 at 5:54am

math
a vertical flagpole casts a shadow of 12ft long at the same time that a nearby vertical past 8ft casts a shadow 3ft long. Find the height of the pole
Saturday, November 22, 2014 at 2:06am

MATH
Kyle is making a model of an Egyptian pyramid for his history class. Each side of the pyramid he makes has a base of 18.6 cm and height 14.8 cm. Calculate the height of Kyle's pyramid to the nearest tenth of a centimeter. Don't I need an angle to calculate this? I don...
Friday, November 21, 2014 at 11:27pm

Math Check please
Suppose c is inversely proportional to the square of d. If c = 4 when d equals 3.find the constant of proportionality and write the formula for c as a function of d c= 36/d^2 use your formula to find c when d is 5. is it 100/d2 or 100/5^2? I know the formula is c=k/d^2 c = ?
Friday, November 21, 2014 at 11:13pm

Math
Beginning January 1, Community Hospital had 175 inpatient beds. On June 15, the bed count was increased to 200. The hospital provided 67,106 service days to inpatients and 68,012 service days to discharged patients. In addition, there were 9,601 admissions and 9,488 discharges...
Friday, November 21, 2014 at 10:45pm

Math
A tightrope walker attaches a cable to the roofs of two adjacent buildings. The cable is 23.5 m long. The angle of inclination of the cable is 13 degrees. The shorter building is 12.0 m high. What is the height of the taller building to the nearest tenth of a metre? I tried ...
Friday, November 21, 2014 at 10:36pm

Math
Find all real solutions x to (4^x)-(2^x)=56. Please explain in steps! Thank you.
Friday, November 21, 2014 at 9:29pm

Math
Find all values of c such that 3^(2c+1)=28*(3^c)-9. If you find more than one value of c, then list your values in increaing order, seperated by commas.
Friday, November 21, 2014 at 9:26pm

Math
The police can determine the speed a car was traveling from the length of the skid marks it leaves. The function they use is S = f(L) = 2sqrt(5L) where S is speed (mph) and L is the length of the skid marks (feet) (a) If skid marks of length 125 feed are measured, what was the...
Friday, November 21, 2014 at 9:09pm

Math Question
If the angle -1500o is in standard position, state the quadrant in which it's terminal side lies.
Friday, November 21, 2014 at 9:08pm

Math
f(x) = 6 / 5+x g(x) = f(f(x)) find a formula in terms of x ,for g^-1(x)
Friday, November 21, 2014 at 9:03pm

Math
h(x) = log (6x+5/7x-4) Find a formula for the inverse function h^-1(x) h^-1(x) = My work so far h(x) = log(6x+5/7x-4) y=log(6x+5/7x-4) x=log(6y+5/7y-4) 7xy-4x= log(6y+5) how would I solve from here. Would I solve for y then do the natural log of both sides or do the natural ...
Friday, November 21, 2014 at 8:38pm

Math
Suppose 81^x=64. What is 27^(x+1)?
Friday, November 21, 2014 at 8:36pm

Math
A savings account at Xyz bank offers 4% interest, compounded annually. How much money must I invest today in order for the account to grow to $5,000 in ten years? Answer to the nearest whole dollar.
Friday, November 21, 2014 at 8:16pm

Math
The function f(x)=ax^2 satisfies f(2)=1 and f(32)=4. Find r.
Friday, November 21, 2014 at 8:13pm

Algebra Help please!
I already posted this question,and Henrey answered it. I just wanted to clarify a few things to make sure I am on the right track Problem: Joanie takes a $6,000 loan to pay for her car. The annual interest reate on the loan is 12%. She makes no payments for 4 years, but has to...
Friday, November 21, 2014 at 8:08pm

math please help!!!!!
Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)
Friday, November 21, 2014 at 7:09pm

math help
Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)
Friday, November 21, 2014 at 6:45pm

Math Help!!!
what is the solution to square root -75 to the nearest integer? 9******* 8 -8 -9
Friday, November 21, 2014 at 6:43pm

math
Mandy is enlarging a photo that is 3 in. wide and 4.5 in long. if she wants the width of the enlargement to be 10 in, what will be the length??
Friday, November 21, 2014 at 6:25pm

Math
h(x)= 3x+2/7x-6 find the inverse of h^-1(x) h^-1(x) = ? Would I solve it like this h(x)= 3x+2/7x-6 7xy-6y=3x+2 (bring 7x-6 to other side) i got confused here. Would i try to bring the 6y over to the right and then the 3x+2 to the left to get Y by itself. then solve ?
Friday, November 21, 2014 at 6:24pm

Math
What is the degree measure of the angle through which the hour hand on a clock rotates from 4:00 pm to 8:00 pm?
Friday, November 21, 2014 at 6:14pm

Math Help!!!
define each term and give at least 2 examples of each whole numbers natural numbers integers rational numbers irrational numbers
Friday, November 21, 2014 at 5:57pm

MATH
Find the formulas for the functions f(g(x)) and g(f(x))when f(x) = 2/x and g(x) = 2x^2-1 f(g(x)) = ? g(f(x)) = ? for f(g(x)) would it be 2/x(2x^2-1) or g(f(x)) 2x^2(2/x)-1? Would i solve like this? also when I tried to input the answer after solving didn't get the answer. ...
Friday, November 21, 2014 at 5:51pm

Math Help
You got to go out to eat with your family, and you agree to leave the tip. What is a 15% tip on a $60.00 bill? A. $3.00 B. $6.00 C. $9.00 D. $12.00 Is the answer C? Thank you
Friday, November 21, 2014 at 5:47pm

math
write the folowing in ascending order:2/3, 1/2, 4/5, 7/20
Friday, November 21, 2014 at 5:45pm

Math Help
Estimate 78% of 20. A. 14 B. 16 C. 19 D. 2 Is the answer B? Thank you
Friday, November 21, 2014 at 5:42pm

math
sue buys 8.5 pounds of chicken to make tacos. she uses 0.3 pound of chicken. how many tacos can sue make? how many pounds of chicken are left over?
Friday, November 21, 2014 at 5:22pm

Question
What can be in a Manipulative &Math Center
Friday, November 21, 2014 at 4:57pm

Math
f(x) = 3x^2 , g(x) = 3x-1, and m(x) = 4x Find and simplify the composition function g(m(f(x))) answers i got which were wrong 3x-1(12x^3) 36x^4-12x^3 Maybe i am putting the information in incorrectly.. Should it look like this (3x^2(4x(3x^2))) then solve?
Friday, November 21, 2014 at 4:29pm

Math
Esmeralda said 4/3 is greater than 7/2 is she right explain your answer.
Friday, November 21, 2014 at 4:21pm

Math
Joanie takes a $6,000 loan to pay for her car. The annual interest reate on the loan is 12%. She makes no payments for 4 years, but has to pay back all the money she owes at the end of 4 years. How much more money will she owe if the interest compounds quarterly than if the ...
Friday, November 21, 2014 at 4:08pm

Math Help!!!
In this unit, you learned about different types of numbers that make up real numbers. Note the different types of numbers and provide two examples of each. Which of the number types is easiest for you to identify? Why?
Friday, November 21, 2014 at 4:00pm

Math
Use properties to evaluate the expression. (19 + 28) + 21
Friday, November 21, 2014 at 3:55pm

math
p= x^2-25x+5000
Friday, November 21, 2014 at 3:54pm

math
9i / -3+8i
Friday, November 21, 2014 at 3:51pm

Math
Sue can either borrow 10,000 dollars for 5 years with a simple interest of 7% annually or an interest which compounds annually for 6%. How much more money, rounded to the nearest dollar, would she have to pay back for the more expensive interest
Friday, November 21, 2014 at 3:35pm

Math Help!!!
. note: remember to show all of the steps that you used to solve the problem. at a halftime show, a marching band marched in formation. the lead drummer started at a point with coordinates (-2,-5) and moved 3 steps up and 1 step right. a. write a rule to describe the ...
Friday, November 21, 2014 at 2:52pm

math
express 4(5x+3)/25x^2-9
Friday, November 21, 2014 at 2:45pm

Math Help!!!
please check my answers 1. Find the length of the hypotenuse of a right triangle with the legs of 9cm and 12cm A.8 B.21 C.15 *** D.225 2.The length of a hypotenuse of a right triangle is 13cm. The length of one leg is 5cm. Find the length of the other leg. A.14 B.144 C.8 D.12...
Friday, November 21, 2014 at 2:40pm

Math
The product of Greg's age and 5 is 55 Use the variable G to represent Greg's age
Friday, November 21, 2014 at 2:04pm

math
(-q^2 +3)(q^2 -2)mulitply
Friday, November 21, 2014 at 1:57pm

math
multiply (-5-p)(5+p)
Friday, November 21, 2014 at 1:52pm

Math
multiply -p(p+q+2)
Friday, November 21, 2014 at 1:51pm

Math
A group of scientists found a new species of spider in the desert. The body temperature of the spider appears to vary sinusoidal over time. A maximum body temperature of the spider reaches 125? after 15 minutes from the start of the examination. Then, 14 minutes later, the ...
Friday, November 21, 2014 at 1:45pm

MATH ONE QUESTION!!!!!!
The graph shows the number of handbags that Mandy made in one day. What are the variables? Describe how the variables are related at various points on the graph. I will attach the graph in the comments right now:)
Friday, November 21, 2014 at 1:45pm

MAth Help
The function f(t)=22sin(piT/3 -5)+80 is used to represent the changes in temperature of a chemical compound used in a lab. What is the vertical shift? I got the answer of 6. Is this correct?
Friday, November 21, 2014 at 1:41pm

Math
What is the vertex of y=7(x+5)^2+4?
Friday, November 21, 2014 at 1:18pm

math
The temperature in your house is controlled by a thermostat. The temperatures will vary according to the sinusoidal function:f(x)=6sin(pi/12(x-11)+19, where f(x) represents the temperature in degrees Celsius (°C) and x is hours since midnight. What is the temperature of ...
Friday, November 21, 2014 at 1:16pm

math
At the amusement park, you decide to ride the Ferris wheel, which has a maxmum height of 80 meters and a diameter of 40 meters. It takes the wheel seven minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter clockwise, how ...
Friday, November 21, 2014 at 1:04pm

Math
Pierre is pouring concrete to create the foundation of a square deck covering 112 square feet. Which is the best estimate of one side of the deck? Round to the nearest tenth, if necessary. 10 ft 10.3 ft 10.6 ft 11 ft I'm going with 10.6. Am I correct?
Friday, November 21, 2014 at 1:02pm

math
Which is an example of an algebraic expression? A. 2k + 25 B. z – 8 = 44 C. 3 + 7 = 10 D. 76 – 10
Friday, November 21, 2014 at 1:00pm

math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel three minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter clockwise, how ...
Friday, November 21, 2014 at 12:56pm

math
Which point represents a number that makes this statement true? 64.8 < < 65. 4 assessment graphic
Friday, November 21, 2014 at 12:55pm

plz help. math
a caterer is planning a large dinner party for 165 guest. each table must get an equal number of guest, more than 1 guest and fewer than 20. Determine the number of possible table sizes. if the caterers use 11- person tables. how many will they need? there are blank possible ...
Friday, November 21, 2014 at 12:53pm

math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 80 meters and a diameter of 40 meters. It takes the wheel seven minutes to make one revolution. Write the sinusoidal function, f(t), that models the height of your chair at any time, t. I...
Friday, November 21, 2014 at 12:48pm

please help
i posted at 12:00 about math... please help for my son.
Friday, November 21, 2014 at 12:08pm

math
terrence's brother decided to share some pizza with terrence and his sister. if terrence ate 1/4 of the pizza, his brother ate 3/16 of the pizza, and altogether the three ate 5/8 of the pizza, how much did the sister eat?
Friday, November 21, 2014 at 12:00pm

math
8 A 5 + 9 4 A
Friday, November 21, 2014 at 5:14am

MATH
2 A B + A B 1
Friday, November 21, 2014 at 5:10am

math
8 A 5 + 9 4 A
Friday, November 21, 2014 at 5:07am

math
8A5 +
Friday, November 21, 2014 at 5:03am

MATH
2 A B + A B 1
Friday, November 21, 2014 at 4:55am

Math
use truth table to verify: 1.Distributive law P conjunction ( q disjunction r )= ( p conjunction q ) disjunction ( p conjunction r) 2.Associative law ( p disjunction q) disjunction r = p disjunction ( p disjunction r ) ( p conjunction q) conjunction r= p conjunction ( q ...
Friday, November 21, 2014 at 4:37am

math
A ball is thrown vertically upward with an initial velocity of 5 ft/sec from a height of 20 feet. Which function models its motion? i literally am lost and have no idea how to this problem. if i could have help with the steps on how to do the problem and to get the correct ...
Friday, November 21, 2014 at 3:28am

math
A manufacturer of lapel buttons test marketed a new item at a university. It was found that 1,000 items could be sold if they were priced at $4, but only 600 items could be sold if the price were raised to $8. On the other hand, the manufacturer finds that 400 items can be ...
Friday, November 21, 2014 at 2:15am

math
A plane makes an 900-mile flight in 3 1/3 hours against a strong head wind, but returns in 50 minutes less with the wind. What is the plane's speed without the wind?
Friday, November 21, 2014 at 2:10am

math
A boat travels 23 mph relative to the riverbank while going downstream and only 11 mph returning upstream. What is the boat's speed in still water?
Friday, November 21, 2014 at 2:00am

math (fractions)
a _____________ has a whole number and a part.
Friday, November 21, 2014 at 1:52am

math
Joan is 'y' years old. Her father is 4 times as old as she is and 28 years older than her brother. A-Find in terms of y, the age of Joan's brother. B- If 'y' =12, how old is her brother?
Thursday, November 20, 2014 at 11:35pm

math
On May 22, 1960, a powerful earthquake took place in Chile. It had a magnitude of 9.5. How much energy did this earthquake release?
Thursday, November 20, 2014 at 10:58pm

Math
When Frederick was born, his grandparents gave hima a gift of $2000, which was invested at a simple interest rate of 5% per year. How much money will Frederick have when he can collect the monet at the age of 18? ( Assume no money is added to the account besides the interest.)
Thursday, November 20, 2014 at 10:34pm

math
carson walked 6 1/2 miles in 2 hours how long will it take him to walk 16 1/4 miles at the same rate
Thursday, November 20, 2014 at 10:26pm

Math
We're doing sequence things in class how do I find the general term of this set (4,8,6,16,8,32,10,64). The answer must be in an equation. The next in the sequence would be 12, 128. I thought the answer was f(x) = 2x but that doesn't account for 6,8,10
Thursday, November 20, 2014 at 10:19pm

math
a dry cleaner charges 18 dollars to clean 4 pair of pants how many pairs of pants can be cleaned for 27 dollars at the same rate
Thursday, November 20, 2014 at 10:16pm

Finite Math
Let A and B be two events in a sample space S such that P(A) = 0.5, P(B) = 0.6, and P(A intersection B) = 0.15. Find the probabilities below. Hint: (A intersection Bc) union (A intersection B) = A. (a) P(A|Bc) ________ (b) P(B|Ac) ________
Thursday, November 20, 2014 at 10:13pm

math
i cant solve this 6/34= p/68
Thursday, November 20, 2014 at 10:11pm

Finite Math
A box contains two defective Christmas tree lights that have been inadvertently mixed with eight nondefective lights. If the lights are selected one at a time without replacement and tested until both defective lights are found, what is the probability that both defective ...
Thursday, November 20, 2014 at 10:11pm

math
i need to solve 3/6= k/18
Thursday, November 20, 2014 at 10:09pm

math
what is the solution to the proportion 4/12= 10/x
Thursday, November 20, 2014 at 10:02pm

math
Change each of the following to simplest form 5 12/8. Is the answer 13/2
Thursday, November 20, 2014 at 10:01pm

math
Change each of the following to simplest form. 18/8. Is the answer 9/4
Thursday, November 20, 2014 at 9:53pm

math
use truth table to verify: 1.Distributive law P conjunction ( q disjunction r )= ( p conjunction q ) disjunction ( p conjunction r) 2.Associative law ( p disjunction q) disjunction r = p disjunction ( p disjunction r ) ( p conjunction q) conjunction r= p conjunction ( q ...
Thursday, November 20, 2014 at 9:48pm

math
a group of fans at a football game are sitting in 7 rows with 28 in each row.in the center, a section of 14 fans in 3 rows and a section of 11 fans in 3 rows have cards spelling out the team name.how many fansdo not have a card?
Thursday, November 20, 2014 at 9:37pm

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