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December 20, 2014

December 20, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**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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