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August 30, 2014

August 30, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

help please 1. log2 x=1/2 2. log√x=-1 3. lnx=1+ln(x+1)
*Monday, July 14, 2014 at 1:14pm*

**Math**

There are 6 white, 9 brown, and 1 pink towels. What is the probability of using a brown or pink towel first.
*Monday, July 14, 2014 at 12:56pm*

**Math**

Continue the pattern for three more terms. Describe how to find the successive terms. a)12,9,6,3 b)5,6,8,11 c)3,-1,-6,-12 Please help
*Monday, July 14, 2014 at 12:16pm*

**Math**

About 190 million drivers are registered in the United States. While on a trip with her family, a student counted the number of male drivers and female drivers on the road. There were 58 male drivers and 48 female drivers. Using the sample predict the number of female drivers ...
*Monday, July 14, 2014 at 9:24am*

**Math**

Perform the given set operation. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a comma-separated list. Enter EMPTY for the empty set.) {1, 2, 8} ∩ {2, 8, 9}
*Sunday, July 13, 2014 at 11:19pm*

**Math**

In a survey of a TriDelt chapter with 50 members, 23 were taking mathematics, 32 were taking English, and 9 were taking both. How many were not taking either of these subjects?
*Sunday, July 13, 2014 at 11:17pm*

**Math**

How do you subtract time? 5:44am-14hrs=? Are there multiples way of figuring this out?
*Sunday, July 13, 2014 at 7:26pm*

**math**

A building is 17 ft high, what is the lenght the ladder must be to extend 3 ft higher than wall
*Sunday, July 13, 2014 at 5:26pm*

**math**

A section of the highway rises 15 feet in a mile, calculate the grade.
*Sunday, July 13, 2014 at 3:21pm*

**Math**

How do I simplify -4(-5x-u)-2(3u-2x)
*Sunday, July 13, 2014 at 3:16pm*

**Math**

what is -4 (-w+4x-2)?
*Sunday, July 13, 2014 at 3:02pm*

**Math**

what is 5 - / 8 6
*Sunday, July 13, 2014 at 2:43pm*

**Math 221**

Math 221 - Ms. Sue, Sunday, July 13, 2014 at 2:24pm I've done several problems for you. Now it's your turn. How do you think this problem should be solved? Answer this Question I was thinking that I should multiply the numerators and denominators
*Sunday, July 13, 2014 at 2:25pm*

**Math 221**

What is 5/12+7/9 in simplest form
*Sunday, July 13, 2014 at 2:22pm*

**Math 221**

What is 78 over 25 as a decimal?
*Sunday, July 13, 2014 at 2:15pm*

**Math 221**

what is the perimeter of a square using 13ft. Math 221 - Ms. Sue, Sunday, July 13, 2014 at 1:56pm Is 13 ft the length of a side of the square? yes
*Sunday, July 13, 2014 at 1:58pm*

**Math 221**

what is the perimeter of a square using 13ft.
*Sunday, July 13, 2014 at 1:53pm*

**Math 221**

Math 221 - Ms. Sue, Sunday, July 13, 2014 at 1:22pm (13/15) / (7/10) (13/15) * (10/7) = Multiply the numerators together. Multiply the denominators together. What do you get? Math 221 - Erica, Sunday, July 13, 2014 at 1:26pm The answer that I got was 13x10=130 and 15x7=105 ...
*Sunday, July 13, 2014 at 1:37pm*

**Math 221**

what is 13/15 divided by 7/10
*Sunday, July 13, 2014 at 1:19pm*

**Math 221**

6.25,16.1, and 9 is what length in meters
*Sunday, July 13, 2014 at 1:16pm*

**Math 221**

What is 9/10+3/8=
*Sunday, July 13, 2014 at 1:05pm*

**math**

An employee at a marketing firm A student uses approximately 40 to 45 gallons of gasoline per month. The cost of gasoline varies between $2.96 and $3.61 per gallon. Which of the following is a reasonable estimate of the student's weekly gasoline expense? A. $15 B.$30 c. $...
*Sunday, July 13, 2014 at 11:30am*

**math**

In a bag of candy, there are five red candies for every two green candies. If there are 35 total candies in the bag, which of the following is the total number of green candies in the bag? A.5 B. 10 C. 20 D. 25
*Sunday, July 13, 2014 at 11:20am*

**math**

A student uses approximately 40 to 45 gallons of gasoline per month. The cost of gasoline varies between $2.96 and $3.61 per gallon. Which of the following is a reasonable estimate of the student's weekly gasoline expense? A. $15 B.$30 c. $45 D. $50
*Sunday, July 13, 2014 at 11:10am*

**math**

If half of the undecided voters vote for Candidate 1 and the other half vote for Candidate 2, which of the following is the number of votes Candidate 2 will receive? A. 45 B. 63 C. 69 D.0.87
*Sunday, July 13, 2014 at 11:08am*

**math**

. Every member of a high school class of 150 students was polled to see whom they would vote for in the election for student body president. The poll results are shown below. Candidate 1 46% Candidate 2 30% Undecided 24%
*Sunday, July 13, 2014 at 11:03am*

**math**

Every member of a high school class of 150 students was polled to see whom they would vote for in the election for student body president. The poll results are shown below.
*Sunday, July 13, 2014 at 11:03am*

**math**

(4x-3y)2 Simplify the expression above. Which of the following is correct? A. 16x2 + 9y2 B. 16x2-9y2 C. 16x2 -24xy -9y2 D. 16x2 -24xy+9y2
*Sunday, July 13, 2014 at 11:00am*

**math**

Which of the following is the best estimate of the number of centimeters in 1 yard? (Note: 1 yard = 3 feet; 1 foot= 12 inches; 1 inch= 2.54 centimeters) A. 36 B. 72 C. 90 D. 180
*Sunday, July 13, 2014 at 10:50am*

**math**

Two restaurants have rooms to rent for dinner parties. One restaurant charges $100 to rent a room and $20 per person. The other restaurant charges $25 to rent the room and $25 per person. Which of the following is the number of people for which the cost of a dinner party would...
*Sunday, July 13, 2014 at 10:48am*

**math**

A temperature gauge reads 95° F. Which of the following is the correct conversion to degrees Celsius? (Note: ° C = 5/ g[° F -32]) A. 21° C B. 35° C c. 63° c D. 113° C
*Sunday, July 13, 2014 at 10:39am*

**math**

. A rectangle has a perimeter of 24 units. If the width is 4 units, which of the following is the length? A. 6 units B. 8 units C. 10 units D. 16 units
*Sunday, July 13, 2014 at 10:35am*

**math**

2 5/8+ 1/3 Simplify the expression above. Which of the following is correct? A. 7 7/8 B. 1 1/7 C. 7/8 D. 8/63
*Sunday, July 13, 2014 at 10:33am*

**Math**

|X+4| = |3X+10|
*Sunday, July 13, 2014 at 9:08am*

**Math**

Absolute value equation |1-X| = 2X-5
*Sunday, July 13, 2014 at 8:51am*

**Math**

Make a vertical line of any measurement on the horizontal line. Write down its length in cm and mm
*Sunday, July 13, 2014 at 12:42am*

**Math**

The plan for a rectangular patio has a square garden centered in the patio with sides parallel to the sides of the patio. The patio is 20m long and 12m wide. If each side of the garden is "x" meters, the function, y= 240-x^2 gives the area of the patio in m^2. What ...
*Sunday, July 13, 2014 at 12:25am*

**Math**

There are 7 red skittles, 15 green skittles and 3 blue skittles in a bag.You reach into a bag and pick a skittle. You then put it back into the bag. You then reach into the bag and pick a skittle. What is the probability that you chose 2 green skittles? Reiny wrote prob(2 ...
*Saturday, July 12, 2014 at 11:33pm*

**Math**

There are 7 red skittles, 15 green skittles and 3 blue skittles in a bag.You reach into a bag and pick a skittle. You then put it back into the bag. You then reach into the bag and pick a skittle. What is the probability that you chose 2 green skittles?
*Saturday, July 12, 2014 at 9:59pm*

**math**

Fred earns $56 a week. 0.0613 of his pay is taken out for Social Security. To the nearest cent how much is taken out each week?
*Saturday, July 12, 2014 at 5:46pm*

**Math**

Find the equation of the regression line and predict y when x = 2.5. x - 1 5 4 2 3 6 y - 25 5 10 20 15 5
*Saturday, July 12, 2014 at 5:03pm*

**Math**

Find the equation of the regression line. x - 12 14 10 9 15 8 y - 29 35 28 23 36 18
*Saturday, July 12, 2014 at 5:01pm*

**Math**

The average hourly wage of employees of a certain company is $14.24. Assume the variable is normally distributed. If the standard deviation is $3.27, find the probability that a randomly selected employee earns more than $18.98.
*Saturday, July 12, 2014 at 5:00pm*

**Math**

Use the equation of the regression line to predict y when x = 11. x - 2 4 3 5 1 y - 9 12 11 14 6
*Saturday, July 12, 2014 at 5:00pm*

**Math**

Use the equation of the regression line to predict y when x = 20. x - 5 8 6 10 12 9 y - 18 20 15 25 30 25
*Saturday, July 12, 2014 at 4:58pm*

**Math**

A boat sails 40km from point A to point B, east of A on a lake. Lodge P is south of point A. Another lodge Q is south of point B. The bearing of Q from point A is S52degresE and the bearing of P from B is S39degresW. If P is 60km from Q, calculate the bearing of lodge Q from ...
*Saturday, July 12, 2014 at 4:58pm*

**Math**

The average hourly wage of employees of a certain company is $14.58. Assume the variable is normally distributed. If the standard deviation is $3.99, find the probability that a randomly selected employee earns less than $9.79.
*Saturday, July 12, 2014 at 4:57pm*

**Math**

The average amount customers at a certain grocery store spend yearly is $784.39. Assume the variable is normally distributed. If the standard deviation is $76.15, find the probability that a randomly selected customer spends between $712.05 and $932.88.
*Saturday, July 12, 2014 at 4:56pm*

**Math**

Suppose the average size (in square feet) of homes in a certain region is 1747. Assume the variable is normally distributed with standard deviation 220. If a person in the region was intending to build a 1890 square foot home but downsized and built a 1274 square foot home, ...
*Saturday, July 12, 2014 at 4:56pm*

**Math**

Find the value for the correlation coefficient r. x - 21 30 25 24 29 y - 49 41 31 36 39
*Saturday, July 12, 2014 at 4:55pm*

**Math**

Find the area under the normal distribution curve to the left of z = 2.35.
*Saturday, July 12, 2014 at 4:06pm*

**Math**

Find the area under the normal distribution curve to the left of z = –1.50.
*Saturday, July 12, 2014 at 4:05pm*

**Math**

Find the area under the normal distribution curve between z = 0.35 and z = 2.95.
*Saturday, July 12, 2014 at 4:05pm*

**Math**

Find the area under the normal distribution curve between z = 0 and z = 3.20.
*Saturday, July 12, 2014 at 4:04pm*

**Math**

Find the area under the normal distribution curve between z = 0 and z = –0.35.
*Saturday, July 12, 2014 at 4:04pm*

**Math**

Find the area under the normal distribution curve between z = –0.10 and z = 3.20.
*Saturday, July 12, 2014 at 4:03pm*

**Math**

Determine whether a correlation coefficient of r = 0.471 is significant at the 5% level for a sample size of 20.
*Saturday, July 12, 2014 at 4:02pm*

**Math**

Assume a data set is normally distributed with mean 182 and standard deviation 30. If the data set contains 600 data values, approximately how many of the data values will fall within the range 122 to 242?
*Saturday, July 12, 2014 at 4:02pm*

**Math**

Assume a data set is normally distributed with mean 11 and standard deviation 3. If the data set contains 30 data values, approximately how many of the data values will fall within the range 8 to 14?
*Saturday, July 12, 2014 at 4:01pm*

**Math**

An aptitude test has a mean of 300 and a standard deviation of 40. The test scores are normally distributed. If 1000 people take the test, find the number of people who will score between 280 and 360.
*Saturday, July 12, 2014 at 4:00pm*

**math**

how do you go from dv/(v+2)(v-1) to -(1/3)/(v+2) + (1/3)/(v-1) dv?
*Saturday, July 12, 2014 at 2:54pm*

**math**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 156 feet, and ball 2 is dropped from a height of 202 feet. Write a function for the height of each ball. h1(t)=159+t h2(t)=202+t
*Saturday, July 12, 2014 at 1:50pm*

**MATH**

WHAT IS THE FOUR DISIT NUMBER WHOSE GREATEST AND SMALLEST NUMER ,DISITS ARE NOT REAPTING BUT UNIT DISIT 1.
*Saturday, July 12, 2014 at 11:47am*

**Math**

Suppose that a pizza must fit into a box with a base 12"X 12" square. Use the quadratic function A= (pi)(r^2) to find the area of a pizza in term of its radius
*Saturday, July 12, 2014 at 11:34am*

**math**

if a car Tyre has a 20 inch radius, how many revolutions per second would this car have to generate to arrive at 150 km/h speed.
*Saturday, July 12, 2014 at 10:09am*

**math**

If the tax on an item is $16 and jerry wanted to buy two how much would the two items cost without the tax? Hint: Tax is 20% of the cost of the item.
*Saturday, July 12, 2014 at 9:44am*

**Math**

A swimming pool is to be constructed with a condition that its length must be twice its width. If the width of the pool is 2x+2 and its volume is 216 meter squared when its 2 meters deep. What is its dimensions?
*Saturday, July 12, 2014 at 8:35am*

**math**

Commuters were asked how many times a week they stop for coffee on their way to work. A survey found a mean of 3 times a week with a standard deviation of 0.55. Find the probability that the sum of 100 values is more than 290.
*Saturday, July 12, 2014 at 8:27am*

**Math**

One side of a triangle is 5cm more than the other and 2cm less than the hypotenuse. Find the lengths of the 3 sides?
*Saturday, July 12, 2014 at 7:42am*

**math**

if f(x)=x[x]/sin[x] then show that lim f(x)has no existence x>0
*Saturday, July 12, 2014 at 7:40am*

**Math**

Part of the stage decoration is a "fan" shape and is to be covered with a white cloth. If the radius of the fan is x+3 and its area is 198 meter squared, what is the dimension of the fan?
*Saturday, July 12, 2014 at 6:47am*

**Math**

I know that I posted this already but my question has not been answered.. Solve in the exact form. Original problem: (sqrt of 4x+1)+(sqrt of x+1)=2 4x+1 + 2√(4x^2+13x+3) + x+3 = 4 Where does the 2 come from according to the equation above?? This 2:-----> 2√(4x^2...
*Saturday, July 12, 2014 at 2:08am*

**English**

1. I studied math for 10 years, but I'm still not good at it. 2. I have studied for 10 years, but I'm still not good at it. (Which one is grammatical? Do we have to sue the present tense or the present perfect tense here?)
*Saturday, July 12, 2014 at 1:05am*

**math 200 statistics**

ADHD a researcher studying ADHD among teenagers obtains a simple random sample of 100 teenagers aged 13 to 17 and asks them whether or not they have ever been prescribed medication for ADHD. To say that the distribution of sample proportion (P cap), the sample proportion of ...
*Friday, July 11, 2014 at 10:44pm*

**Math**

what is the sum of a profit 0f $8000 and a loss of $13000? I'm realy struggling and need URGENT Help! plz respond
*Friday, July 11, 2014 at 9:23pm*

**Math**

Carpet salespeople at cover up carpets do not earn a base salary. Instead they receive a commission of 7.5% on all their sales. How many dollars worth of carpets will max have to sell if he wants to bring home $600 a week?
*Friday, July 11, 2014 at 6:24pm*

**Math**

Radical 1500
*Friday, July 11, 2014 at 6:17pm*

**math**

What is the greatest common factor of 36, 20, and 8?
*Friday, July 11, 2014 at 1:05pm*

**math**

1 1 1 2 1 1211 111221 312211 What would be the next rung of the pyramid?
*Friday, July 11, 2014 at 12:26pm*

**MATH**

if f(x)=x[x] / sin[x] then show that there is no existence of lim f(x) x>0 2nd prob: show lim (tanx-sinx)/x^3 =1/2 x>0
*Friday, July 11, 2014 at 11:28am*

**math**

find the value lim[(cos x)^1/2 -(cos x)^1/3]/(sinx)^1/2 x>0
*Friday, July 11, 2014 at 11:13am*

**math**

find the value lim [sin(x+h)-sinx]/h h>0
*Friday, July 11, 2014 at 11:06am*

**math**

(25+5)(25-5)=0
*Friday, July 11, 2014 at 8:02am*

**Math literacy business studies life science and history**

Hi i was wondering which career path should i follow if im doing these subjects
*Friday, July 11, 2014 at 7:15am*

**math**

my height is 5'7" inches tall and 170 in cm, if i make it into an integer, what would it be in integer?
*Thursday, July 10, 2014 at 9:41pm*

**Math**

A factory produces fuses, which are packaged in boxes of 16. Three fuses are selected at random from each box for inspection. The box is rejected if at least one of the three fuses is defective. What is the probability that a box containing six defective fuses will be rejected?
*Thursday, July 10, 2014 at 7:50pm*

**Math**

If a hallway is 90 feet long & 7 feet wide and it takes 1/2 ounce of cleaning solution to clean 1 square foot, how much cleaning solution is needed to clean the hallway?
*Thursday, July 10, 2014 at 6:41pm*

**math**

Using the shadow method, Norman finds the height of a tree as follows: He measures the shadow of the measuring stick (4ft) and the tree (20ft). He then uses similar triangles to find the tree's height. If the measuring stick is 3 feet long, how tall is the tree? 4 feet ...
*Thursday, July 10, 2014 at 1:59pm*

**math**

George has been hired to paint the smith's house. He needs to be sure his ladder will reach the highest part of the house, so he decides to use the shadow method. The measuring stick is 3 ft., and tits shadow is 5 feet. The shadow of the house is 45 feet. The shadow of the...
*Thursday, July 10, 2014 at 1:35pm*

**math**

If [(x-5)(x.x-2x+1)/(x-7)(x.x+2x+3)]is positive for real value of x, then prove that there is no value of x between 5 & 7.
*Thursday, July 10, 2014 at 1:27pm*

**math**

The expression y=ax²+bx+c has always the same sign as of 'a' if:
*Thursday, July 10, 2014 at 1:07pm*

**Another question (math)**

What percent less than 3 is 2? Can you explain too?
*Thursday, July 10, 2014 at 11:45am*

**Math (Trying to understand) 4th**

Hi I need help with something. I need to understand what it is trying to ask me. Thanks. (This is online homework) Question: Omit % sign in all of the answers! Change the numbers to percent (don't round) Express your answer as a common fraction, not mixed number. So, for ...
*Thursday, July 10, 2014 at 11:33am*

**math**

Given that 2 log base2 (x+15) - log base2 x = 6 1.Show that x^2 -34x +225 = 0 2. Hence or otherwise solve the equation 2 log base 2 (x+15) - log base 2 x =6
*Thursday, July 10, 2014 at 10:29am*

**math**

Solve 4^y -7(2^y) = 8
*Thursday, July 10, 2014 at 10:24am*

**math**

Solve 3 log x = 1 + log (4x+5)/ log 2
*Thursday, July 10, 2014 at 10:24am*

**math**

Given that x = 2log t is a solution of the equation10^(2x+1) -7(10^x) -26 =0. Find t
*Thursday, July 10, 2014 at 10:22am*

**math**

the length of a car park is 120 m. longer than its width the area of the car park is 6400 m(2) how would you represents its width
*Thursday, July 10, 2014 at 8:28am*

**math**

what is the derivatice of 3x-4/4x+2
*Thursday, July 10, 2014 at 8:08am*

**math**

A woman buys a $ 78 necklace at a jewelry store. She gives the jeweler a check for $ 100. Because he does not have the $ 22 change, he goes to another merchant next door. There he exchanges the woman's check for $ 100 in cash. He returns and Gives the woman the necklace ...
*Thursday, July 10, 2014 at 6:04am*

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