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May 29, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

math
If there are 150 students in the club and a recent survey shows that 3 out of 5 prefer Tues. meetings, how many do not want to meet on Tues. ?
Wednesday, April 20, 2016 by kristen

Math
Directions: write and solve an algebraic equation or inequality for each problem. 1. Mabel has a total of 54 beads. Some are black and some are white. The ratio of the number of black beads to the number of white beads is 7:2. How many more black beads than white beads are there?
Wednesday, April 20, 2016 by Lily

Math
There are 30 students in the gym. If at least 16 are girls, write an inequality to represent the number of boys in the gym.
Wednesday, April 20, 2016 by Lily

Math
A mirror is 3 1/2 foot wide is hung in the center of a 9 foot long wall. How much wall space is left on each side of the mirror?
Wednesday, April 20, 2016 by G

math
Factorise 3x^4-6x^3=
Wednesday, April 20, 2016 by johannes johannes

math
What is the area of the two-dimensional cross section that is parallel to the base of the cylinder, rounded to the hundredths place? Use. 3.14 for the value of pi. The radius is 5.2 m
Wednesday, April 20, 2016 by Angelica

Math
The school bus will be either be on time ir late. The probability that it will be on time is therefore 0.5.
Wednesday, April 20, 2016 by Kayla

math
Jay purchased a new leather jacket on sale at a 40% discount. The origanal list price was $320. What wad the amount of the discount. I just need to learn how to do this kind of question because my teacher did not teach me this.
Wednesday, April 20, 2016 by Nevaeh

math log rules / chem
hey so i have this equation i need to manipulate to solve for F- concentration. E1 = constant - 0.05916log[F] E2 = constant -0.05916log([F]+[Spiked]) E2-E1=-0.05916log(F+S) + 0.05916log[F] E2-E1/0.05916) = log[F+S] + log[F] how do I solve for log[F] ???
Wednesday, April 20, 2016 by help me :(

Math
Madison has 48 ft of fence with which to fence in a rectangular garden. What is the maximum area she can enclose?
Wednesday, April 20, 2016 by Amber

Math
Eric had 8 apples. He gave away 1/4 of them. How many apples did he give away?
Wednesday, April 20, 2016 by Maya

Math
sand is being poured from one container to another. The sand flows from the shaded part to the the unshaded cone. The shaded part is full of sand. The sand empties into the unshaded cone and fills it to the top. What is the height of the unshaded cone? Shaded = 5cm radius / 4 ...
Wednesday, April 20, 2016 by pizza2 -- please help

Math
A 6-inch pizza costs $3.50. A 12-inch pizza costs $11. How much less is the area of the 6-inch pizza than the area of the 12-inch pizza? Express your answer to the nearest hundreth.
Wednesday, April 20, 2016 by Ashley

math HELP
you have a savings account that offers an annual simple interest rat of5% you put $350 into the account select the graph showing the total interest you earn after 1,2,3,and 4 years
Wednesday, April 20, 2016 by nicky

math
A triangular traffic island has a base half as long as its height. The island has an area of 289 m2 . Find the base and the height.
Wednesday, April 20, 2016 by Anonymous

Math
Emma is using the Fermi process to estimate the number of standard sheets of U.S. writing paper that would need to be stacked on top of one another to reach the top of Mt. Mckinley. Emma knows that a standard sheet of writing paper is approximately 0.004 in. thick and Mt. ...
Wednesday, April 20, 2016 by Asia

Math
which statement are always true about a scatter plot with a positive trend? Choose two The point will form a straight line•• As the x value increases the y value increases The point will show a general upward trend left to right on the graph•• There will ...
Wednesday, April 20, 2016 by Hey

Math
The measure of one acute angle of a right triangle is twelve more than three times the measure than the other acute angle. Find the measure of each acute angle of the right triangle.
Wednesday, April 20, 2016 by Bianca

math help pls pls pls
Water coming out from a fountain is modeled by the function f(x) = −x2 + 8x + 2 where f(x) represents the height, in feet, of the water from the fountain at different times x, in seconds. What does the average rate of change of f(x) from x = 1 to x = 4 represent? The ...
Wednesday, April 20, 2016 by Oscar

math log rules / chemistry
hey so i have this equation i need to manipulate to solve for F- concentration. E1 = constant - 0.05916log[F] E2 = constant -0.05916log([F]+[Spiked]) E2-E1=-0.05916log(F+S) + 0.05916log[F] E2-E1/0.05916) = log[F+S] + log[F] how do I solve for log[F] ???
Wednesday, April 20, 2016 by help me :(

math
| x + 1 | + 6 = 3
Wednesday, April 20, 2016 by Sally

math
the angle of elevation of the sun is 27 degree.a man is 180cm tall.how long is his shadows?give your answer to the nearest 10cm
Wednesday, April 20, 2016 by favour

Math
abe creates a scatter plot showing students ages on the x-axis and their heights on the y-axis. which type of tend will the scatter plot show? A line trend•• A positive trend A negative tend No trend Correct me
Wednesday, April 20, 2016 by Hey

Math
0-foot ladder is leaning against a wall. The base of the ladder is 2 feet from the base of the building. How far up the building does the ladder fall
Wednesday, April 20, 2016 by Anonymous

Math
What is the probability that washing dishes tonight will take me between 11 and 14 minutes? Give your answer accurate to two decimal places. please help out
Wednesday, April 20, 2016 by Anonymous

Statistics
In a certain Math class, the probabilities have been empirically determined for various numbers of absentees on any given day. These values are shown in the table below. Find the expected number of absentees in a given day. Number of absentees, x 0 1 2 3 4 Probability, P(x) 0....
Wednesday, April 20, 2016 by Joan

math
If the store purchases an item at a wholesale cost of $3.50 per item, and it is sold at a retail value of $5.00 per item. What is the gross profit percentage of the item?
Wednesday, April 20, 2016 by alan

Math
Use the acidity model given by pH = −log[H+], where acidity (pH) is a measure of the hydrogen ion concentration [H+] (measured in moles of hydrogen per liter) of a solution. Compute [H+] for a solution in which pH = 6.2. (Enter your answer in scientific notation. Round ...
Wednesday, April 20, 2016 by Sarah

math
Malcolm wants to enlarge a 2-inch by 3-inch photograph by multiplying its dimensions by 5. How will the area of the photograph be affected?
Wednesday, April 20, 2016 by jhkobe

Math
What is the circumference of the circle? Round your answer to the nearest tenth. The radius of the circle is 12.5 cm. A) 39.25 cm B) 392.5 cm C) 78.5 cm** D)785 cm If I'm right, I guess I did it right, if I'm not, please tell me and explain if you can, if not that'...
Wednesday, April 20, 2016 by Myra

Math
x P(x) 0 0.3 1 0.15 2 0.2 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
Wednesday, April 20, 2016 by Anonymous

Math
Given that x=log3^5 and y=log3^2, rewrite log3^60 in terms of x and y.
Wednesday, April 20, 2016 by Jen

Math
(1) which of the following correctly identifies the methods of heat transfer? 1. A- convention B- radiaton C- conduction ~~~~~~~~~~~~~ 2. A- conduction B- radiaton C- convention ~~~~~~~~~~~~~ 3. A- convention B- conduction C- radiaton ~~~~~~~~~~~~~ 4. A- radiaton B- convention...
Wednesday, April 20, 2016 by #FreeGucci

math
Wha is a vertex, a focus, an eccentricity, and a latus rectum
Wednesday, April 20, 2016 by ej

math
the 9th term of an arithmetic sequence is 29. the 16th term is 50. what is the 20th term ?
Wednesday, April 20, 2016 by kadedria

math
If you walked 2 3/4 miles on Monday and then walked 3 1/3 miles on Tuesday, how many miles did you walk during those two
Wednesday, April 20, 2016 by lamarkus

Math
A dress cost $12 more than a shirt. Yasmin bought 3 such dress and 5 similar shirt for $356.hoe much did she pay for each shirt? I just can't work it out :( so I total 3 dresses most $36 more than the shirt.. Then. I am lost.
Wednesday, April 20, 2016 by Sera

Math
lisa used 4/5 cup of flour with 1/3 cup of salt when cooking. how many cups of flour will she need if she uses 1 cup of salt?
Wednesday, April 20, 2016 by Razan

math
There are 40 slots in a roulette wheel,19 are red, 19 are black, and 2 are green. if you place a $1 bet on red and win, you get $2( your original point $1 and an additional $1) returned. what is the expected value of a $1.00 bet on red.
Wednesday, April 20, 2016 by Therese

math
trying to verify the volume of a rectanguler prism h=10 inches w=2 and the formula to find the volume is l.w.h not a math genius just trying to make sure i am calculating this correctly to find the lengh we had to divide the width of the prism so 2 inches divided by 4 =0.5 ...
Wednesday, April 20, 2016 by meshel

math
a sum of 380 is divided between Kelvin and Winne.Kelvin spends 3/4 of the amount received,while Winner spends 2/5 of the amount received.if Winnie spends 32 less than Kelvin,how much does ach of them receive?
Wednesday, April 20, 2016 by Lawrence

math
Heong cut a slice of birthday cake . The slice formed the angle shown. What is the measure of the angle shown?
Wednesday, April 20, 2016 by eman

Math
About 8% of the population of a large country is nervous around strangers. If two people are randomly selected, what is the probability both are nervous around strangers? What is the probability at least one is nervous around strangers?
Tuesday, April 19, 2016 by Anonymous

Math
Mr.dean paints the top of a round picnic table. The diameter of the table iz 6 feet. The paint he usez comes in a can that covers 18 square feet of surface. How many cans of paint does mr.dean need to purchase to paint one coast on the top of the table?
Tuesday, April 19, 2016 by Vanessa

Math
I need help please. Draw a quadrilateral that is not a parallelogram.
Tuesday, April 19, 2016 by Holly

I have a question[math]
which one is bigger 1/2 3/4 3/5
Tuesday, April 19, 2016 by bobisawesome777

Math
Carlos and Krystal are taking a road trip from Greenville to North Valley.Each has their own map,and the scales on their maps are different. A. On Carlos's map,Greenville and North Valley are 4.5 inches apart. The scale on his map is 1 inch = 20 miles. How far is ...
Tuesday, April 19, 2016 by Jason

math
a boy travels 15 km due north,then goes 9 km due east,then 3km due south.how far is he from his starting point
Tuesday, April 19, 2016 by chinaza

Math
A high school has 438 students with about the same number of males and females. Describe a simulation to predict how many of the first 50 students who leave school at the end of the day are female.
Tuesday, April 19, 2016 by Emily

Math
A 20 foot piece of rope will be cut into as many 3 and 1\2 foot section as possible. how much rope will be left over?
Tuesday, April 19, 2016 by Tammy

Math
Talia tossed a penny many times. she got 40 heads and 60 tails. she said the experimental probability of getting heads was 40 over 60. Explain and correct her error.
Tuesday, April 19, 2016 by Emily

Math
)ne canned juice drink is 25​% orange​ juice; another is 55​% orange juice. How many liters of each should be mixed together in order to get 20L that is 21​% orange​ juice?
Tuesday, April 19, 2016 by Amber

Math
Order fractions from greatest to least. 1/10, 3/5, 1/4
Tuesday, April 19, 2016 by Mike

math
a university surveys a randomly selected group of 250 freshmen. In the group, 20 of the freshmen were left-handed. If there are 8,000 in the freshman class, what is the best prediction fo the number of left-handed freshmen students? THANK YOU!
Tuesday, April 19, 2016 by Tim

Help me please my daughter math
Each week Susie washes dishes three nights,washes clothes one night,empties trash cans two nights,and cook supper one night.If her Aunt Nancy stopped by randomly one night,what are the chances that Susie would be cooking that night??
Tuesday, April 19, 2016 by Jena

Math
number of students in a class = 36 number playing cricket = 16 number playing football = 25 number playing both cricket and football = x write an equation for x how many students play both football and cricket
Tuesday, April 19, 2016 by Rick

math
Anthony has 7 bills. All the bills are tens or twenties. The bills Anthony has total $100 in value. How many of each hill does Anthony have? Pretty sure the solving method is solving systems of equations but you have to isolate the variables and stuff.. please help!!
Tuesday, April 19, 2016 by claire

math
Mike was bored so he played with some colored blocks arranging them in a role he put 1 block in the first row 2 blocks in the second roll, 4 blocks and the third row and 8 blocks in the fourth row. If this pattern continues, how many blocks will Mike put in the 17th roll?
Tuesday, April 19, 2016 by mike

math help pls pls pls
The table below shows the age of some participants in a quiz competition and the number of questions they could answer correctly: Age (years) (x) 15 21 17 22 16 19 18 Number of questions they could answer (y) 17 17 17 17 17 17 17 What is the correlation coefficient for the ...
Tuesday, April 19, 2016 by Oscar

math
$6350 is compounded semiannually at 14% for 12 years. What is the total amount in the compound interest account?
Tuesday, April 19, 2016 by holly

Math
What expression represents the height of this prism? Volume = 64(c)3(b)8 Base area = 16(ab)3 a) 4a2b3 b) 4a3b3 c) 1024a3b9 d) 1024a4b9
Tuesday, April 19, 2016 by pizza2

math
femi spent 1/4 of his money on transportation, 2/5 of it on food and has #700.00 left. how much did he start with
Tuesday, April 19, 2016 by chima

Math
An airplane pilot over the Pacific sights an atoll at an angle of depression of 7°. At this time, the horizontal distance from the airplane to the atoll is 3,729 meters. What is the height of the plane to the nearest meter? 458 meters 454 meters 3,667 meters 3,701 meters ...
Tuesday, April 19, 2016 by Tim

Math
1. To find the height of a pole, a surveyor moves 120 feet away from the base of the pole and then, with a transit 8 feet tall, measure the angle of elevation to the top of the pole to be 36*. to the nearest foot, what is the height of the pole? A) 87 feet. B) 95 feet. C) 71 ...
Tuesday, April 19, 2016 by Tim

Math
The perimeter of the rectangle is 120 units what is its area in square units L=3n W= n What formula do I use? A) 675 B) 900 C) 1225 D) 2700
Tuesday, April 19, 2016 by pizza

math
at night, a 6ft man is walking towards a 8ft lamp post at a speed of 3ft/sec how fast is his shadow changing?
Tuesday, April 19, 2016 by jake

Math
Mae is making cookies. To make 3 dozen she needs 3 1/4 cups of chips. How many cups of chip will she need to make 5 dozen cookies?
Tuesday, April 19, 2016 by Savannah

math
Glenn raced his motorcycle 30 times last season. He finished first 12 times, second 5 times, and crashed in 9 races. What percent of the races did he finish second ? Set up as a proportion and solve
Tuesday, April 19, 2016 by jacob

Math
How many 1/3- cup servings of juice are in a 5- cup container?
Tuesday, April 19, 2016 by Anonymous

math
Let a be -1/6 and let b be 1/2. Let x be the sum of the reciprocals of a and b, let y be the product of the reciprocals of a and b, and let z be twice the reciprocal of a divided by the reciprocal of b. Calculate x+y+z.
Tuesday, April 19, 2016 by frank

Math
if the perimeter of a rectangle is 120 units what is its area in square units
Tuesday, April 19, 2016 by Apple

math
Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in ...
Tuesday, April 19, 2016 by jai anyone please help

math
What is the greatest prime factor of 3105?
Tuesday, April 19, 2016 by francis

math
97 is the largest prime less than 100. What is the largest prime factor of 97! (97 factorial)? (Reminder: The number n! is the product of the integers from 1 to n. For example, 5!=5*4*3*2*1= 120.)
Tuesday, April 19, 2016 by francis

math
5xy4x
Tuesday, April 19, 2016 by Tlakula Dzunisani

math
the length of a rectangle is 23 centimeters less than five times its width. Its area is 42 square centimeters. Find the dimensions of the rectangle
Tuesday, April 19, 2016 by Leticia

Math
1. In triangle DEF, m angle D=45, m angle E=63, and EF=24 in. What is DE to the nearest tenth of an inch? A) 30.3 in. B) 15.1 in. C) 32.3 in. D) 10.5 in. Is the Answer A? I'm not quite sure though since i'm confused on this question. If someone could help that would ...
Tuesday, April 19, 2016 by Tim

Math
Evaluate: -17 + 6 =
Tuesday, April 19, 2016 by Chris

Math
-4+12 /(-3) 10+3(-2)=
Tuesday, April 19, 2016 by Sam

Math
Here it just says this: Solve triangle ABC. (If an answer does not exist, enter DNE. Round your answers to one decimal place.) b = 67, c = 33, ∠A = 70°
Tuesday, April 19, 2016 by Theo

Math
tan(θ)/ sec(θ) − cos(θ) Please help!
Tuesday, April 19, 2016 by Jenn

math algebra
An​ employee's new salary is ​$18,165 after getting a​ 5% raise. What was the salary before the increase in​ pay?
Tuesday, April 19, 2016 by lola

Math
57 is the product of 3 and Helena's savings.
Tuesday, April 19, 2016 by Paige

Math
If a seed is planted, it has a 75% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 3 don't grow?
Tuesday, April 19, 2016 by Anonymous

math area
A rectangular tabletop is 4 ft long and 30 in. wide. Which is the area of the tabletop?
Tuesday, April 19, 2016 by Anonymous

Math
Which of the following is a true statement? it is possible for two rectangles to have the same area, but only if they have the same perimeter. It is possible for two rectangles to have the same area without having the same perimeter. *** It is possible for two squares to have ...
Tuesday, April 19, 2016 by Myra

Math
The distance around the Earth at the equator is about 40074 kilometers find the equatorial diameter of Earth to the nearest kilometer A.12,762 Km B.25,512 Km C.62,884 km D 6,339,700 Km
Tuesday, April 19, 2016 by Applesuace Master

Math
A bag contains 3 gold marbles, 10 silver marbles, and 21 black marbles. Someone offers to play this game: You randomly select on marble from the bag. If it is gold, you win $3. If it is silver, you win $2. If it is black, you lose $1.
Tuesday, April 19, 2016 by Anonymous

math
Which statements are true for irrational numbers written in decimal form? A. Irrational numbers are nonterminating. B. Irrational numbers are repeating. C. Irrational numbers are nonrepeating. D. Irrational numbers are terminating.
Tuesday, April 19, 2016 by Claire

Math
7 10 of your friends prefer to take a math test on Friday. 7 20 prefer Friday and Wednesday. What fraction of those who prefer Friday also prefer Wednesday?
Tuesday, April 19, 2016 by Cing

math
Lines a and b are parallel. When they are cut by transversals, they form a triangle. es025-1.jpg What is es025-2.jpg es025-3.jpg
Tuesday, April 19, 2016 by chris

math
find the product greatest four digit number and smallest three digit number using property of multiplication?
Tuesday, April 19, 2016 by shehzad

Math
Mona takes out a $12,000 student loan to help pay for her first 2 years of college, then 2 years later needs another loan for $14,000 to get her through to graduation. She graduates 4 years and 9 months after acquiring the first loan, and payments are deferred until 6 months ...
Tuesday, April 19, 2016 by Anonymous

Math
One number exceeds another by 12 . if five times the smaller number is subtracted from three times the larger number the result is 20. Find the numbers
Tuesday, April 19, 2016 by Gian Carlo

Math
Femi spent 1/4 of his money on transport, 2/5 on food and has #700.00 left. how much did he start with?
Tuesday, April 19, 2016 by Esther

Math
x2 - 4px +8
Tuesday, April 19, 2016 by Asive

math
Ashwin and Donald decided to set out from two towns on their bikes, which are 247 miles apart, connected by a straight Roman road in England. When they finally met up somewhere between the two towns, Ashwin had been cycling for 9 miles a day. The number of days for the whole ...
Tuesday, April 19, 2016 by blodwick

math
A swimmer can swim a distance of 36 kilometer in the direction of water current in the same time, which he require to swim 36 kilometer in the opposite direction of water current in stream. If in still water, swimmer has speed of 12 kilometer per hour more than the speed of ...
Tuesday, April 19, 2016 by ramzan

math
there is two digit figure in which one digit is exactly half the other. If the position of both fonts or digits is interchanged, the resultant figure when added with the origional figure sum to 99. what is the origional figure?
Tuesday, April 19, 2016 by ramzan

math
Khalid is now four times as okd as his daughter. Ten years ago,if the sum of their ages was sixty. Find the present age of his daughter?
Tuesday, April 19, 2016 by ramzan

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