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December 18, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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math
solve for x x+√(31-9x)=5
Sunday, November 16, 2014 at 10:31pm

math
How do i find solutions to 20x^3-125x=0?
Sunday, November 16, 2014 at 10:25pm

MATH 101
Solve the equation. You will have three solutions. X^3-8=0
Sunday, November 16, 2014 at 10:24pm

MATH 101
Find f(x)if f(3) = 0 and f(−4) = 0.
Sunday, November 16, 2014 at 10:23pm

math
How do I solve x^2+2x+4>0 and what does the solution tell you?
Sunday, November 16, 2014 at 10:22pm

Math
Find all possible rational roots using the rational root theorem. 3x^3 + 2x^2 - 1 = 0 plus/minus 1/3 and plus/minus 1?
Sunday, November 16, 2014 at 10:15pm

math
how many cubic inches in 7'8"L, 12'2"W, 10'1" tall? please show how you get to the answer. I added up the feet (7+12+10=29 ft) and multiplied by 12 inches (29x12=348 in), then added on the remaining inches (8+2+1=11, 348+11) to come up with an answer...
Sunday, November 16, 2014 at 10:13pm

Math
Find the value of b, if any, that will make the function differentiable at x = 0 g(x)= { x+b, x<0 cos(x), x≥0 can you help, I got 0 but I don't know if that will make the function differential at x=0.
Sunday, November 16, 2014 at 9:41pm

Math help/check
Suppose the functions f and g and their derivatives have the following values at x = 1 and x = 2. Let h(x) = f(g(x)). Evaluate h′(1). X | f(x) G(x) f'(x) g'(x) ____________________________ 1 | 8 2 1/3 -3 2 | 3 -4 2π 5 My answer: -6π
Sunday, November 16, 2014 at 9:28pm

math
52.36*0.3*5.65
Sunday, November 16, 2014 at 9:20pm

Math
The inflection point of the curve y = x4 − 8x3 + 24x2 + 7x − 3 is? So I got (1,21) I was wondering if this is correct because sometimes I will be doing something completely wrong and not even realize it.
Sunday, November 16, 2014 at 9:19pm

math
52.36*0.3*5.65?
Sunday, November 16, 2014 at 9:14pm

Math
Complete number line from 0 to 3 in thirds. In fractions.
Sunday, November 16, 2014 at 9:04pm

math
find the volume triangular pyramid: triangle base 20mm triangle height 22mm, pyramid height 14mm
Sunday, November 16, 2014 at 8:59pm

Math
Surveyors with a highway planning crew measure a section of proposed roadway to be 4.4 km. They measure the angle of inclination over the 4.4 km to be 8.5 degrees. Determine the change in altitude for drivers travelling from one end to the other. Answer to the nearest whole ...
Sunday, November 16, 2014 at 8:23pm

math
I need to figure coupon code. Code is 5 43000 18670 6. Do i subtract the 5 or add?
Sunday, November 16, 2014 at 8:20pm

math
Rainbow Harbor Cruises charges $16/adult and $8/child for a round-trip ticket. The records show that, on a certain weekend, 1400 took the cruise on Saturday and 1000 took the cruise on Sunday. The total receipts for Saturday were $18,400, and the total receipts for Sunday were...
Sunday, November 16, 2014 at 8:15pm

sixth grade math
Lindsay ate 7/8 of an apple. what percent of the apple did he eat? My answer is 875%. Is the answer 875% or 87.5%.
Sunday, November 16, 2014 at 8:12pm

math
the movie theater had 52 more occupied seats than empty seats. there are a total of 320 seats in the theater. How many seats were occupied?
Sunday, November 16, 2014 at 8:06pm

math
A farmer has twice as many chickens as ducks. After selling 166 chicken and 29 ducks, he has twice as many ducks as chickens. How many chickens did he have to start??
Sunday, November 16, 2014 at 7:57pm

sixth grade math
Lisa hiked 7 miles of a 21-mile trail. What percent of the trail did she hike?
Sunday, November 16, 2014 at 7:26pm

math
4 multiple choice questions with 3 possible answers. What is the probability of answering the first, third, and fourth question correctly? 1/3 x 1/3 x 1/3 1/3 = 1/81
Sunday, November 16, 2014 at 6:37pm

Math Elementary Linear Algebra
determine whether or not the given set forms a basis for the indicated subspace: #1 {1,1,0), (1,1,1)} for the subspace of R^3 of all (x,y,z) such that y= x+z #2 {[1,2,-1,3), (0,0,0,0)} for the subspace of R^4 of all vectors of the form (a,b, a-b,a+b) and #3 {(2,0,2), (1,1,1)} ...
Sunday, November 16, 2014 at 6:17pm

math
when a traffic light turns green, a car accelerates at a constant rate, the decelerates in the same manner to stop at the next traffic light. The speed of the car, s, is given by the equation, s=-10 /t-8/ + 80 where t is time. Find the time , t, it takes for the car to reach ...
Sunday, November 16, 2014 at 6:13pm

Math 6th
Andy ran a 5-kilometer race in 40 minutes. If Andy maintains that same place, how many kilometers did Andy run In 1 hour?
Sunday, November 16, 2014 at 6:08pm

math fractions
•math - Ms. Sue, Sunday, November 16, 2014 at 12:39pm 12 •math - bob, Sunday, November 16, 2014 at 12:56pm Ms. Sue can you tell me how you got that answer please. •math - Ms. Sue, Sunday, November 16, 2014 at 1:09pm Multiples of 6: 6, 12, 18, 24 Multiples of 4: ...
Sunday, November 16, 2014 at 6:05pm

Math
An equilateral triangle is inscribed in a circle. If the radius of the circle is 10 cm, calculate the length of a side of the triangle. Answer to nearest whole centimetre
Sunday, November 16, 2014 at 6:02pm

Math
Solve (16x^2)^-3/4 Please help using step by step. I don't understand how to do this. Thank you
Sunday, November 16, 2014 at 5:07pm

Math
A photocopy was made of Julie's watercolor painting. the photocopy resized the painting so that it measured 4 inches wide by 7 inches long. If the actual painting is 16 inches wide, what is the length?
Sunday, November 16, 2014 at 5:01pm

math
A cylindrical water tank has a diameter of 1.2 m and a height of 1.5 m.How many liters of water can it hold the nearest liter?
Sunday, November 16, 2014 at 4:56pm

Math
show that the set of all m-vectors whose first components is 0 (of R^m)
Sunday, November 16, 2014 at 4:46pm

Elementary Math
Miriam is four years older than Ricardo. Ten years ago Miriam was 3 times as old as Ricardo was then. How old are they now?
Sunday, November 16, 2014 at 4:41pm

Math:Algebra
Maya has 2 times as many apples as Ally if Ally has 87 apples how many apples dose Maya have now? Maya's sister takes some away. Write an algebraic expression that represents the amount of apples they have now?
Sunday, November 16, 2014 at 4:35pm

Math
An airplane travels 226 miles in 2 hours. At that rate, how far will the airplane travel in 8 hours?
Sunday, November 16, 2014 at 4:14pm

Math
The tank is 1/2 full of water. The. A spherical wrecking ball with radius of 2ft is dropped into the tank. How far will the water level rise once the sphere is completely submerged? I cant figure it out. I've been trying for two days now. And its due..
Sunday, November 16, 2014 at 3:54pm

Math
Connie wants to have an annuity payment of $2,000 at the END of every three months. How much should she deposit now at 6% interest, compounded quarterly, to yield this payment for 3 years?
Sunday, November 16, 2014 at 3:46pm

Math
Your bank pays 9% interest, compounded annually. Use the appropriate formula to find how much you should deposit now to yeild an annuity payment of $800 at the END of each year, for 10 years?
Sunday, November 16, 2014 at 3:41pm

math
which lap has the slowest time out of these- 1.59, 1.85, or 1.64
Sunday, November 16, 2014 at 3:35pm

math
Is this correct- 0.685 x 100 =68.5
Sunday, November 16, 2014 at 3:33pm

Math
Joan ran for 2.25 hours burning 3075.5 calories per hour how many total calories does he burn
Sunday, November 16, 2014 at 3:19pm

Math (calculus)
Prof gave us this question to practice but I do not know how to solve it. If you know please provide step by step with the answer so I can understand it. Thank you very much :) Suppose a rocket is launched from the ground with 10 seconds worth of fuel. The rocket has an upward...
Sunday, November 16, 2014 at 2:32pm

Probabilitys Math
After the last game of the season a football team goes out for ice cream. Each player orders a triple cup of ice cream with a topping.Each order has 3 diffrent flavors, order doesnt matter.The shop has 7 diffrent flavors and 2 toppings to choose from iss it possible for each ...
Sunday, November 16, 2014 at 2:03pm

math
A zoo kitchen's weekley grocery list shows the zoo orders 56 pounds of bannas each week.The zoo kitchen uses the same number of pounds of bannas each day.
Sunday, November 16, 2014 at 1:48pm

Math
Yes, it is I again, with yet another math problem. The question is; In a bag, there are 8 white marbles, 8 blue marbles, 7 red marbles, and 6 yellow marbles. How many marbles does it take to pull out 3 marbles of the same color. (A)6 (B)9 (C)12 (D)15 (E)I forgot the last one I...
Sunday, November 16, 2014 at 1:20pm

math
Tom is making meatloaf with 3/4 pound of turkey and 5/6 pound of ground beef. What is the LCM he should use to find the total number of pounds of meat? How many pounds of meat will be in the meat loaf? Show your work Completely.
Sunday, November 16, 2014 at 12:35pm

math
What is the GCF of 8 and 24? What is the LCM of 8 and 24?Write the sum of 8 + 24 as the product of its GCF and another sum.
Sunday, November 16, 2014 at 12:27pm

math
Darion needs 20 pieces of string 3/8 inch in length .He cut a 4 7/8 inch piece of string into pieces that are 3/8 of a inch long each. How many more pieces of string does he need?
Sunday, November 16, 2014 at 12:05pm

Math
In a coordinate plane, Brittany labeled the coordinates for point m as (-31/2,2). Sade tells Brittany to reflect point m over the x axis to point r. What are the coordinate of point r?
Sunday, November 16, 2014 at 12:04pm

MATH
The table below represents the volume of a liquid sample as a function of its temperature: Temp (C) Volume (ml) x f(x) 11 95 16 100 21 105 26 110 The average rate of change of f(x) between x=11 to x=21 is _____ ml per C ((degrees)) and represents the rate of change of volume ...
Sunday, November 16, 2014 at 11:54am

Math
16 dogs share a bowl of food. Each dog eats half a cup. Write & solve a division equation to find how much dog food was in bowl. Would this be c=16/2 c=8 (c=cups) Thanks for your help.
Sunday, November 16, 2014 at 11:53am

math/fractiom
One-fifth of your art-supply money goes for brushes. If you also spend 1 2 of your money on paint, what fraction of your money will you have left?
Sunday, November 16, 2014 at 12:49am

1210 Math
A projectile follows a parabolic path whose height, in meters, is given by the function f(x) =-x^+2x+2, find the maximum horizontal distance that the projectile may cover
Sunday, November 16, 2014 at 12:17am

Business Math
How is math and recycling related?
Sunday, November 16, 2014 at 12:11am

Math
How is math and recycling related?
Sunday, November 16, 2014 at 12:07am

Math (Algebra 1)
Juan’s first 3 exam scores are 85, 93, and 87. What does he need to score on his next exam to average 90 for all 4 exams? let x represent the score on his next exam (put this in a multi-step equation) PLEASE HELP
Saturday, November 15, 2014 at 10:48pm

Math
I am in 6th grade but to me, that doesn't matter because I have high hopes for myself. My question is; How many distinct letter arrangements can be made from the word LETTER with each T on each side? (A) 6 (B) 12 (C) 24 (D) 120 (E) 720 I think it is 24 because if an ...
Saturday, November 15, 2014 at 9:02pm

Math
A road rises 1m for every 15m measured along the road. a. What is the angle of inclination of the road to the nearest degree? b. How far does a car travel horizontally when it travels 15m along the road? Give the answer to the nearest tenth of a metre.
Saturday, November 15, 2014 at 6:49pm

Math
If 3/8 of my money is 12.00 how much money do I have
Saturday, November 15, 2014 at 6:49pm

math fractions
Brent divided 3 1/5 by a number and got 4 1/2. What number did he divide by?
Saturday, November 15, 2014 at 5:33pm

Math
Suppose that a water wheel has a radius of 22 feet and makes a complete revolution every 14 seconds. The bottom of the water water wheel is 1 foot above the ground level. One step of the water wheel is painted red to be able to determine the amount of time for one complete ...
Saturday, November 15, 2014 at 4:13pm

math
The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 24 cubic inches when its base area is 24 square inches and its height is 3 inches. What is the volume of a pyramid with a base area of 10 square inches and a ...
Saturday, November 15, 2014 at 3:54pm

math
Melina walked her dog 2 1/5 miles. Cathy walked her dog 1 3/4 times as far as Melania did. How many more miles did Cathy walk her dog?
Saturday, November 15, 2014 at 3:46pm

math
Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1 + X) · E(1/1 + X)= 1. n→∞
Saturday, November 15, 2014 at 1:40pm

math
cuboid dimension 3in x 12in x 4in wrapped present has two loops of ribbon around it. each loop goes completely around the box once and always runs down the middle of a face. The two loops overlap each other at a right angle, but ends of the ribbon do not overlap when making ...
Saturday, November 15, 2014 at 12:50pm

math
find the inverse. f(x)=√3+4
Saturday, November 15, 2014 at 12:03pm

Math
Can a trend line go on forever if so why
Saturday, November 15, 2014 at 11:31am

math
7 nails has a of 50g how many nails have a mass of 1/2kg
Saturday, November 15, 2014 at 10:17am

math
barry had a pan of brownies 2/5 full his friends came over and ate 1/4 how much is left
Saturday, November 15, 2014 at 9:08am

math
solve √ ̅m+3 + √ ̅m-2 =5 (show step by step process of solving the equation)
Saturday, November 15, 2014 at 4:37am

math
the measure of the sides of a rectangle are ( 4 √ ̅2 - √ ̅3cm) by ( √ ̅6 + 2 cm). Find the measure of its diagonal.
Saturday, November 15, 2014 at 4:37am

MATH
√ ̅m+3 + √ ̅m-2 =5 How do you call equation like that?
Saturday, November 15, 2014 at 4:35am

math
if the square root of twice a number is diminished by three, the result is 5. what is the number?
Saturday, November 15, 2014 at 4:31am

math
a man 5 ft tall casts a shadow of 6 ft. The angle of elevation f the sun is?
Saturday, November 15, 2014 at 1:11am

math
find the value of the variable that would make the equation true.. 1.) 5x = 15 2.) -3x = 21 3.) 9x = -27 4.) -7x = -12 5.) 2/3 x = 8
Friday, November 14, 2014 at 11:37pm

Math
Condense the expression to the logarithm of a single quantity. 5lnx-6ln(x+2)
Friday, November 14, 2014 at 10:42pm

Math Help Respond To @Steve
So for this question: The number of bacteria present in a culture is given by the following model B=1000e^0.276t; where t= time in minutes. Find the time required to have 6000 bacteria present. Then, round your answer to the nearest tenth of a minute; would my answer be 6.5?
Friday, November 14, 2014 at 10:42pm

Math
What is 8 and 2 over 20 minus 6 and 8 over 20 8 2 - 20 8=? 2=? 20=?
Friday, November 14, 2014 at 9:29pm

math
a city is served by two newspapers-the Tribune and the Daily News. Each Sunday a reader purchases one of the newspapers at a stand. The following transition matrix contains the probabilities of a customers buying a particular newspaper in a week given the newspaper purchased ...
Friday, November 14, 2014 at 7:57pm

math
Find the inverse f(x)= -2+7
Friday, November 14, 2014 at 7:36pm

Art Help!
How is this artistic creation an example of a combination of art and science? It is a picture of an oragomi shrimp made out of brown paper with black eyes. A. It is a creative sculpture of a shrimp. B. It is not anatomically correct. C. It is made with recycled paper. D. It ...
Friday, November 14, 2014 at 6:49pm

math
(2+3i) / (4-2i)
Friday, November 14, 2014 at 6:42pm

math
Find the inverse of f(x) f(x)=3-1/2x
Friday, November 14, 2014 at 6:38pm

Math
Simplify (16x^8)^-3/4 1) 16^-3/4*(x^8)^-3/4 2) -12*x^-6 3) -12*1/x^6 4) -12/x^6 Which step is incorrect? Please help!!
Friday, November 14, 2014 at 6:34pm

Math
What is an interquartile range? What is a mean absolute deviation?
Friday, November 14, 2014 at 6:10pm

Math Help!
Sometimes scale drawings are shown on graph paper. Each square on this graph papers is 1/4 inch. Use the scale drawing of the living room to answer each question. Scale= 1/4=18 inches What is the width of the sofa in inches? The sofa has 10 full squares and 5 half squares. A. ...
Friday, November 14, 2014 at 6:03pm

Math
Simplify (27t^2)^2/3
Friday, November 14, 2014 at 5:59pm

Math Help!
Sometimes scale drawings are shown on graph paper. Each square on this graph paper is 1/4 inch, Use the scale drawing of the living room to answer each question. What is the lenth of the fireplace in inches? The fireplace has 5 squares. A. 90 inches B. 45 inches C. 180 inches ...
Friday, November 14, 2014 at 5:50pm

MATH
The average of 30 numbers is 65. If one of these numbers is 65, the sum of the remaining number is... A.65*64 B.30.64 C.29*30 D. 29*64 E. 29 *65 Is it A?? If not, can you explain
Friday, November 14, 2014 at 5:10pm

math
The average height of 3 students is 68 inches. If 2 of the students have heights of 70 inches and 72 inches respectively, thenw hat is the height (in inches) of the third student?
Friday, November 14, 2014 at 4:58pm

MATH
write the following square root in the form a over sq root b, where a and b are intergers and b has the least value possible root 63 =
Friday, November 14, 2014 at 4:45pm

math
what is 4 to the negative 2 times 2 to the 0. my options are 8 16 1/16 -64 I think it is 16.
Friday, November 14, 2014 at 4:43pm

math
Show how to make one addend the tens number. Problem: 22+49= 71 new problem.
Friday, November 14, 2014 at 4:36pm

math
sales tax is 8.2 percent find the sales taxes on a purchase of 273.00.
Friday, November 14, 2014 at 4:05pm

math
square root in the form a aroot b, were a and b are intergers and a and b has the least value root 24.
Friday, November 14, 2014 at 3:55pm

Math
convert the repeating decimal to a/b where a,b are integers and b #0.
Friday, November 14, 2014 at 3:52pm

math
how high is a tree that cast a 36ft shadow at the time a 12ft post cast a shadow which is 12 ft. how high is the tree hight
Friday, November 14, 2014 at 3:50pm

Math Help
The number of bacteria present in a culture is given by the following model B=1000e^0.276t; where t= time in minutes. Find the time required to have 6000 bacteria present. Then, round your answer to the nearest tenth of a minute.
Friday, November 14, 2014 at 3:47pm

MATH
put in order from largest to smallest 0.54, 0.60686, 0.5065
Friday, November 14, 2014 at 3:16pm

math
the mass of a grain of sand is 8.7*10^-8 write the nurmeral in secentence in standard form.
Friday, November 14, 2014 at 3:15pm

MATH!!!
Aparent dies and leaves half of his estate to his four children. THE FIRST ONE GETS 1/2 OF THE ESTte the second gets 1/8 and the thrid one gets 1/4 . how much did the fourth on get?
Friday, November 14, 2014 at 2:55pm

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