Friday
July 29, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

math
Kate Davidson signed a simple discount note for $9,000. The discount rate is 5%, and the term of the note is 18 months. What is the annual percentage yield (APY)?
Friday, May 6, 2016 by Angie

math
Israel signed a simple discount promissory note for $15,000. The discount rate is 7.5%, and the term of the note is 120 days. What are Israel’s proceeds on the loan?
Friday, May 6, 2016 by Angie

math
Alicia borrowed $8,500 at 6% ordinary interest for 180 days. After 40 days, she made a partial payment of $2,000. After another 70 days, Alicia made a second partial payment of $2,000. What is the final amount due on the loan?
Friday, May 6, 2016 by Angie

math
Webster Digital received a promissory note of $8,000 for 9 months at 7% simple interest from one of its customers. After 4 months, the note was discounted at Bank of Aventura at a discount rate of 10%. What are the proceeds Webster Digital will receive from the discounted note?
Friday, May 6, 2016 by Angie

College Math
James bought 24 bolts at the hardware store for a total of $9.00. Some were 3−inch bolts that cost 36 cents each and the others were 4−inch bolts that cost 42 cents each. How many 3−inch bolts did James buy?
Friday, May 6, 2016 by Victoria

math
What is the annual percentage yield (APY) of a simple discount note for $7,000 at a bank discount rate of 6%, for 3 months?
Friday, May 6, 2016 by Angie

Math
Rob had a pitcher containing 2 liters of lemonade. He poured an equal amount of lemonade into 14 glasses. How much lemonade was left over in the pitcher? 14/2000=142 r 12
Friday, May 6, 2016 by Terri

math
seven horses are entered in a race. If two horses are tied for first​ place, and there are no ties among the other five ​horses, in how many ways can the seven horses cross the finish​ line?
Friday, May 6, 2016 by sarah

math
horses are entered in a race. If two horses are tied for first​ place, and there are no ties among the other five ​horses, in how many ways can the seven horses cross the finish​ line?
Friday, May 6, 2016 by sarah

Math
What is the greatest common factor you can use to simplify the ration 85:51
Thursday, May 5, 2016 by Jennifer

math
Tasha and Lee played a series of games against each other. Tasha won three more than twice as many games as Lee. Lee won 15 games. Find the probability that Tasha won a game
Thursday, May 5, 2016 by Anonymous

Math
To the nearest tenth of a centimeter, what is the length of the hypotenuse of a right triangle with leg lengths of 5 cm and 6 cm?
Thursday, May 5, 2016 by Elijah

Math
Find the perimeter and the area of the rectangle. I cant upload pics. Its a rectangle with 12cm at the bottom and theres a diaganal line going through and its 15cm Perimeter: 54 cm, Area: 180 cm^2 Perimeter: 54 cm, Area: 108 cm^2 Perimeter: 42 cm, Area: 180 cm^2 Perimeter: 42 ...
Thursday, May 5, 2016 by Amy Pond

math
On the first two days of Mark's vacation, the weather forecaster reports a 25% chance of rain. On the third day of his vacation, Mark is faced with a 50% chance of rain. What is the probability that Mark will have three straight days of rain?
Thursday, May 5, 2016 by Anonymous

math
The first term of a geometric sequence is 9 and the common ratio is -1 over 3. find the fourth term
Thursday, May 5, 2016 by Anonymous

math
Sharif wants a new winter coat that retails for $156.99, it is on sale for 80% of the regular price. What is the sale price of the coat? my answer: $45.59
Thursday, May 5, 2016 by Please check my answer

Math
Ruth is putting up a framed map of South America in her room. She wants it exactly halfway between her door and her closet, which are 6.5 feet apart. If the map is 23 inches wide, how far will its sides be from the door and closet?
Thursday, May 5, 2016 by Unknown

math- geometry
I will try and explain this since I can't draw the picture that went with this question. A circular glass overlay was placed on the top of a circular table. Find the area of the shaded region, rounding to the nearest tenth. The shaded region is the part of the table ...
Thursday, May 5, 2016 by sara

math
find the function rule x -2 -1 0 1 2 y 9 4 -1 -6 -11
Thursday, May 5, 2016 by ginger

math-
-10x+4+y=4 use the function rule to complete the table x -2 -1 0 1 2 y _ _ _ _ _
Thursday, May 5, 2016 by ginger

Math
A nurse at a school is having a poster contest. The nurse sayS the size of the rectangular poster must be 72 square inches. Each side of the poster has to measure in whole inches. What are all the possible sizes of the poster board the nurse can cut to have ready?
Thursday, May 5, 2016 by Naftale

math
If a note has a frequency of 220 Hz, find the frequencies of the notes one, two, and three octaves higher.
Thursday, May 5, 2016 by Shenika Jackson

Math
Is it possible to have a semiregular tessellation using 2 pentagons and 4 decagons?
Thursday, May 5, 2016 by CHRIS gOULD

Math
1. Given one side of a golden rectangle is 3.7 inches, find the possible lengths of the other side. Notice that the other side can be either longer or shorter than 3.7 inches. Round your answers to the nearest tenth and useGreek Phi normal.=1.618.
Thursday, May 5, 2016 by BOBBY WALKER PLEASE HELP

math 21
xy-x+y=0 please answer this for me
Thursday, May 5, 2016 by Earl John

Math
Adam made 19 paper cranes Monday and 8 more Tuesday He gave 9 friends an equal number of cranes. How many cranes did each friend receive? Explain
Thursday, May 5, 2016 by Vickie

Math
If y=8 when x=4,find y when x=5
Thursday, May 5, 2016 by John

Math
A mas key shows that every 5 in ches on the más representa 200 miles of actual distance. Su pose the distance between two cities on the map is 7 inches. What is the actual distance between the two cities? Write the rule you uses to find the actual ditance.
Thursday, May 5, 2016 by Jamillet

Math help (emergency)
How many 2-digit numbers can be formed using only the digits 2, 3, 5, and 6. if the digits are not repeated within a number? 11 12 10 2
Thursday, May 5, 2016 by FluttershyK22

Math (help)
A coin is tossed, and a standard number cube is rolled. What is the probability that the coin shows heads and the number cube shows an even number? 1/6 1 1/4 1/2
Thursday, May 5, 2016 by FluttershyK22

math
a cyclindrical water storage tank contains 2187 cubic units of water. All the water is pumped equally into 3 congruent cubic coolers. What is the minimum length that each coller need to be?
Thursday, May 5, 2016 by lisa

math
a cross section of a basement is shaped like a trapaziod. it has an area of 37.4 square meters, one base is 6.4 meters and the other base is 12.3 meters long. what is the height of the cross section? is it 18.7 or 2? or am i wrong?
Thursday, May 5, 2016 by maya

math
when will -5(x+2) = 0? I don't know what to do for this
Thursday, May 5, 2016 by gabi

5th grade math
If y is less than twice x , and x is 15. What is y
Thursday, May 5, 2016 by Kezia

math
write each expression using a single exponent please help 1.a^5/a^3 2.x^9/x^5 3.c^7/c^2 4. (-1)^5/(-1)^4
Thursday, May 5, 2016 by lisa

math
in the 6th grade 12 out of 27 students have a pet. if there are 162 students how many would have a pet? i get 72 is that right?
Thursday, May 5, 2016 by may

math
a cross section of a basement is shaped like a trapaziod. it has an area of 37.4 square meters, one base is 6.4 meters and the other base is 12.3 meters long. what is the height of the cross section? is it 18.7 or 2? or am i wrong?
Thursday, May 5, 2016 by maya

math
An average of 1.8% of Apex Alarm systems need a battery replacement after 3 years in operation. Seventy-two battery replacements are needed in the next three years. What is the best estimate of how many Apex Alarm systems were sold?
Thursday, May 5, 2016 by Anonymous

math
calculate the area of triangleABC with the dimensions given in the diagram.A for 4cm,B and C for 2cm while C for 5cm
Thursday, May 5, 2016 by eniola

MATH HELP PLZ!
Two cell phone companies have different rate plans. Runfast has monthly charges $25 plus $10 per gig of data. B A &D’s monthly charge is $18 plus 15 per gig of data. Your task is to determine under what circumstances each company has the better pricing. You will derive ...
Thursday, May 5, 2016 by Santana

math
A sum of money is invested in a business. In each year, this investment earns 11 over 2 times as much as in the preceding year. If the investment earned a total of $29,250 in four years, how much did it earn in the fourth year?
Thursday, May 5, 2016 by Anonymous

math
If you multiply your neighbor's age by 4, add 7, divide by 3, and subtract 9, the result is 20. how old is your neighbor?
Thursday, May 5, 2016 by Anonymous

math
calculate the area of a rectangle of length 5cm and breadth 6cm
Thursday, May 5, 2016 by eniola

Pre Algebra (Math)
A certain animal can go for a long period of time without drinking water. When it does drink, its body weight can increase by 40%. Suppose the animal weighs 80 pounds after a long period without water. How many pounds can the animal gain when it drinks?
Thursday, May 5, 2016 by Justin

Math
1. What is true of a random sample A. It is only one way to sample a population B. Each member of the sample is a volenteer C. It is the easiest way to sample a population D.
Thursday, May 5, 2016 by Lilly

Math
Algebra 2 A sequence is of pyramids is created where the first pyramid has a height of 6 inches and a base area of 10 inches, for a volume of 20 cubic inches. The height of the next pyramid is twice the height of the previous pyramid. The input of the sequence is the position ...
Thursday, May 5, 2016 by Brenda

math
Trapezoid One: Has a top base of 187.5ft, a bottom base of 397.5ft, and a height of 165ft. I got the answer 48,262.5, how would i check if this is correct? Trapezoid Two: Has a top base of 397.5 ft, a bottom base of 225 ft, and a height of 225 ft as well. I got 70,031.25 ft^2...
Thursday, May 5, 2016 by Tim

math
Find the length of an arc of a circle of radius 6cm which subtends an angle of 105 degree at the Centre of the circle
Thursday, May 5, 2016 by Anonymous

Math
Hi there! How would I check if I got the area of a trapezoid correct? Is there a way to check my work? Thank you.
Thursday, May 5, 2016 by Tim

math
you spin a 6 section red spinner and a 6 section blue spinner. Find P(red less than 4 and a red 2).
Thursday, May 5, 2016 by help me

math 5th grade
The width of a picnic table is 3 times its length. If the length is 5 6 -yd long, what is the area of the picnic table in square feet? sides are 2 1/2 yd and 5/6 yard. then to find area 2 1/2 x 5/6 = 2 5/12 y2 how do I find square feet?
Thursday, May 5, 2016 by paul

Math ---HELP!!!!!
Decide which of the described variables is/are likely to have a normal or near-normal distribution. a) The heights of corn stalks in one row of corn that is half a mile long b) The numbers of viewers of each of the channels from 202 to 550 on Direct TV at 7:00 PM CDT on the ...
Thursday, May 5, 2016 by angela

Math
Early this spring researchers have recently discovered that there is one small remnant population of endangered bluegrass left in a small prairie plot outside of Kansas City. If there are approximately 850 individuals in the cohort, how many individuals can the researchers ...
Thursday, May 5, 2016 by Anonymous

Math
You run a small furniture business. You sign a deal with a customer to deliver up to 500 chairs, the exact number to be determined by the customer later. The price will be $120 per chair up to 400 chairs, and above 400 the price will be reduced by $0.25 per chair (on the whole...
Thursday, May 5, 2016 by Lucas

Business math
Choose the correct answers for (a) the total installment price, (b) the carrying charges, and (c) the number of months needed to save the money at the monthly rate to buy the item for its cash price. A dinette table with a cash price of $200 at $8.50 down and $11.00 per month ...
Thursday, May 5, 2016 by Carrie

math
yesterday, lena had 55 baseball cards. Today she gave c away. using c write an expression for the number of cards lena has left.
Thursday, May 5, 2016 by michele

Math
Geoff is reading a book. On Monday he reads 1/3 of the book. On Tuesday he reads 3/10 of the remaining pages. He has 35 pages left to read. How many pages are in the book?
Thursday, May 5, 2016 by Speakerabbit

Math
–14 – ( –16 ) = ? Please help. Thank you!
Thursday, May 5, 2016 by Help!

Math ---HELP!!!!!
The mean score on the exit examination for an urban high school is 63 with a standard deviation of 9. What is the standard deviation of the distribution of sample means with a sample size of 9? A. 2 B. 3 C. 4 D. 4.1 answer B
Thursday, May 5, 2016 by angela

Math ---HELP!!!!!
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, approximately what percentage of light bulbs has a life of more than 3000 hours? A. About 84% B. About 68% C. About 32% D. About 16% Answer B
Thursday, May 5, 2016 by angela

Math ---HELP!!!!!
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean rebuild time of the ...
Thursday, May 5, 2016 by angela

Math ---HELP!!!!!
The amount of Jen’s monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile. A. About $46.30 B. About $43.30 C. About $43.40 D. about $43.20 Answer : B---43.30
Thursday, May 5, 2016 by angela

Math ---HELP!!!!!
Decide which of the described variables is/are likely to have a normal or near-normal distribution. a) The heights of corn stalks in one row of corn that is half a mile long b) The numbers of viewers of each of the channels from 202 to 550 on Direct TV at 7:00 PM CDT on the ...
Thursday, May 5, 2016 by angela

Math ---HELP!!!!!
light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, use the 68-95-99.7 rule to approximate the percentage of light bulbs having a life between 2000 hours and 3500 hours? A. About 13.5% B. About 50% C. About 68...
Thursday, May 5, 2016 by angela

Math ---HELP!!!!!
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours? A. About 25% B. About 50% C. About 75% D. About 68% Answer B
Thursday, May 5, 2016 by angela

math
determine which ordered pair is a solution of y=2x-3.
Thursday, May 5, 2016 by anna

math
There were 35 gallons of water in a tank and 4.5 gallons of water in a pail. An equal amount of water was poured into a tank and the pail. The ratio of the water in the tank to the pail became 7:2. a) How much water was in the pail in the end? b) How much water was poured into...
Thursday, May 5, 2016 by Emilyyyyyyyyyyy

math
The figure below is not drawn to scale. The ratio of the triangle ABC to the area of triangle DEC to the area of the triangle FGH is 7:5:3. If 20% of the area of triangle DEC is shaded, what percentage of the figure is unshaded?
Thursday, May 5, 2016 by Emilyyyyyyyyyyy

math. compounding interest
regina deposits 3500 in a savings account that pays 7 1/2 % interest , compounded semiannually. how much interest does the account earn in the first 6 months?
Thursday, May 5, 2016 by Anonymous

math
find the distance (0,0) and (5,8) round the answer to the nearest hundred how do you calculate distance
Thursday, May 5, 2016 by val

math
Maria wants to cover the box shown below with paper.Which of the following could be the dimensions of the paper so that Maria has enough to cover the box, including the ends, with a little left over? Shape: Rectangular Prism Length:8 in Width: 2 in Height: 2 in A) 8 in x 4 in ...
Thursday, May 5, 2016 by Larry vandermark

math
The area of a triangle is 45cm and the altitude is 5cm greater than the base. Find the length of the base.
Thursday, May 5, 2016 by bob

Math
1. Simplify. 3x^2+ 5x-5x^2-4x+5-2 A.-8x^2-9x+3 B.2x^2+x+3 C.-2x^2-9x+3*** D.-2x^2+x+3 2. Add or Subtract.(8x – 2y) + (3x – 4y) A.11x+8y B.4x-y C.11x-6y*** D.5x+2y 3.(5x^2-4x-1)-(-4x^2-4) A.-9x^2-8x-1 B.9x^2-4x+3*** C.x^2-4x-3 D.9x^2+4x-3 4.The distance from Newtown ...
Thursday, May 5, 2016 by Emma

Math
2cos(45)-tan(45)/90.5-64 =?
Thursday, May 5, 2016 by Roygbiv

MATH ANSWER HELP
Graphing in the Coordinate Plane Unit Test
Thursday, May 5, 2016 by john hobert

consumer math
John Tucker is interested in purchasing stock. He wants to determine the costs.
Thursday, May 5, 2016 by WoopGotti

Math
For 7 days keep track of the number of pieces of mail you receive at your home. a. Put your data into a frequency table having intervals of 0–4, 5–9, 10–14, and 15–19. b. Use the frequency table to create a histogram of the data. c. Do you notice any ...
Thursday, May 5, 2016 by 7thgradestudent

math
If f(x)=6x^3 - ax^2 + bx + c when a, b and c are constant when f(x) is divided by x^2 - 4 the remainder is 23x - 26. When f(x) divided by (x + 3) the remainder is -220. Find: (A) the value of a, b and c (B) the solution of the equation f(x)=0
Thursday, May 5, 2016 by somay

Math
2cos(45)-tan(45)/90.5-64 =?
Thursday, May 5, 2016 by Roygbiv

math
T =ƒ­aƒy+ beƒ{^- kt (Equation 2) where T is the temperature at time t, and a, b and k are constants with values a = 20 „aC, b = 80 „aC and k = 2.6 ¡Ñ 10ƒ{4 sƒ{1. Differentiate Equation 2 with respect to t and thus give values...
Thursday, May 5, 2016 by Jack

Math
A boy is trying to find the height of a tree. When he stands 95.5 metres away from the tree (the distance D in Figure 2) the angle shown as è in Figure 2 is 31.5°. The boy’s eyes are 1.15 m from the ground (h in Figure 2). What is the height of the tree? You ...
Thursday, May 5, 2016 by Jack

math
The fourth term of an ap is 1 less than twice the second term. If the sixth term is 7, find the first term.
Thursday, May 5, 2016 by Kamil

math
A wire of length 12 1/2m is cut into 10 pieces of equal length. Find the length of each piece.
Thursday, May 5, 2016 by taashu

Math
Ms hunt is standing on top of the building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle of depression to the base of the building is 77degrees. The buildings are 31m apart. How tall is the other building
Thursday, May 5, 2016 by Nikka

math
a paper cone have a base diameter of 10cm and height of 12cm.calculate the volume of the cone
Thursday, May 5, 2016 by Ibrahim

trig, precalc, math, algebra, trigonometry
Rewrite: tan(cos^−1 (v)) as an algebraic expression in v. Please help me understand.
Thursday, May 5, 2016 by Veronica

math
Melissa returned home from mowing lawns at 4:15 PM. It took 1 and ¾ hours of an hour to mow the first lawn. The second and third lawns she mowed each took 1 and ⅕ hours. She took only a 45-minute break. When did Melissa begin mowing the first lawn?
Thursday, May 5, 2016 by Anonymous

math
Ellijah and Angela are playing a game that has two piles of cards. Each of the 12 cards in one pile lists one month of the year. Each of the 7 cards in the other pile lists a day of the week. On each person’s turn, the player randomly chooses one card from each pile. What...
Thursday, May 5, 2016 by Anonymous

Math
In a group of 500 women how many would you expect to be taller than 6 feet?
Thursday, May 5, 2016 by Anonymous

math
A number cube is rolled 310 times and the results recorded: 50 ones, 55 twos, 44 threes, 53 fours, 52 fives, and 56 sixes. What is the experimental probability of rolling an even number, as a percent?
Thursday, May 5, 2016 by please help me quickly I'm so confused

math
make s the subject of the formula in d=c-s/n
Thursday, May 5, 2016 by Anonymous

Physics, Math
A helicopter is in a level flight with an altitude of 4000 feet and a speed of 130 feet/sec. The helicopter drop a bomb with 0 speed relative to the helicopter. How far does the bomb travel horizontally from the launch point to impact with the ground?
Thursday, May 5, 2016 by Alex

math
the question is the formula use in calculating depreciation that is reducing balance method which is (1-n√s/c)×100/1 now we were asked to now make each of n,s,and c in the formula the subject of the formula please help me
Wednesday, May 4, 2016 by Anonymous

Finite Math
A student is making out her schedule for next year. Her list consists of 9 required courses and 12 elective courses. She must take at least 4 courses but cannot take more than 6 courses. In how many ways can she select courses such that she takes at least one elective course?
Wednesday, May 4, 2016 by Jay

Math
The following table shows the rate of water flow (in L/min) through a dam. t (min) 1 6 11 16 21 26 31 V'(t) (L/min) 1 8 2 9 7 5 9 Approximate the total volume of water that passed through the dam from t=1 to t=31 using Simpson's rule, with n=6.
Wednesday, May 4, 2016 by Steve

Math
Use Simpson's Rule and all the data in the following table to estimate the value of the integral b=-5 a=-11 x= -11 -10 -9 -8 -7 -6 -5 y= 6 -9 -3 -9 -1 -9 -1
Wednesday, May 4, 2016 by John

Math
f(x) = cos (1/x) Find the limit as x approaches infinity and find the limit as x approaches negative infinity. Identify all horizontal asymptotes.
Wednesday, May 4, 2016 by David

Math
f(x) = cos (1/x) Find the limit as x approaches infinity and find the limit as x approaches negative infinity. Identify all horizontal asymptotes.
Wednesday, May 4, 2016 by David

Math
Suppose the equation v=16.2x^2 - 192.1x + 2800 represents the value of a house from 1925 to 1950. When did the house have the lowest value? Round to the nearest whole number. (X=0 in 1925)
Wednesday, May 4, 2016 by Koki

math
Can you please help me with a math problem
Wednesday, May 4, 2016 by Anonymous

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