Thursday

May 28, 2015

May 28, 2015

**math**

a mechanic is looking over his supply of oil. he counted a jug that had 2 quarts of oil another had 3 3/4 and another that only had 1 pint. how much oil does he have?
*Saturday, May 9, 2015 at 4:39pm*

**Math**

Is this independent or not. Carlos tosses a coin that comes up heads. Jennifer tosses a coin that also come up heads.
*Saturday, May 9, 2015 at 3:57pm*

**math**

i started with the first charges: sqrt[2(20)(100))/0.05]. I don't know I'm doing right. Here the problem: Suppose you have a choice of three suppliers for footballs. the first charges $100 per delivery but won't deliver more than 200 at a time; the second charges $...
*Saturday, May 9, 2015 at 3:47pm*

**Math**

The angle of elevation of the top of house from the bottom of a tower 160m high is 26 degree.From the top of the tower the angle of elevation is 24 degree.What is the height of the house if the tower and the house are 50m apart?
*Saturday, May 9, 2015 at 2:54pm*

**Math**

the great pyramid of cheops is a square based pyramid with a height of 147 meters and a base length of 230 meters. find the angle to the nearest degree that one of the edges of the pyramid makes with the base
*Saturday, May 9, 2015 at 1:16pm*

**math**

8 is to 64 as 2 is to x solve for x
*Saturday, May 9, 2015 at 1:11pm*

**Math**

Math: Is this statement independent or not. Jordan stayed up late last night watching television. Jordan did poorly in his quiz in the morning.
*Saturday, May 9, 2015 at 1:10pm*

**math**

The probability that 1 egg out of 30 is cracked is 0.05. a)Find the probability that at least 1 egg is cracked out of 30. b)Find the probability that at most 2 are cracked
*Saturday, May 9, 2015 at 11:25am*

**math**

the first and last term of an AP is a and l.show nth term from begining and nth term from end is a l
*Saturday, May 9, 2015 at 3:26am*

**extreme math help please**

The data in the table illustrate a linear function. What is the slope of the linear function. x |0|2|4|6| y|-5|-2|1|4| Thank you
*Saturday, May 9, 2015 at 12:20am*

**math**

the price for pears is y=2.75x which line would have the steepest slope if organic apples and pears were added to the graph
*Friday, May 8, 2015 at 7:54pm*

**math 2 questions**

Three indviduals form a partnership and agree to divide the profits equally. X invests $6,500, Y invests $2,000, and Z invests $1,500. If the profits are $3,000, how much less does X receive then if the profits were divided in proportion to the amount invested? In printing an ...
*Friday, May 8, 2015 at 7:50pm*

**math help please**

Which hill described in the table is the steepest and why? Street. Horizontal distance vertical (ft). Rise of Street (ft) Dixie hill. 100. 60 Bell hill. 100. 50 Liberty hill 100. 20 A. Dixie hill; it rises 5 feet for every 3 feet of horizontal travel. B. Dixie hill; rises 3/5 ...
*Friday, May 8, 2015 at 7:18pm*

**Math**

A Canadian television station shows 16 minutes of commercials every hour between 8 am and 11 pm everyday. How many minutes of commercials are there on the station between 8 am and 11 pm in 365 days?
*Friday, May 8, 2015 at 7:14pm*

**Math**

Emma's rectangular garden is enclosed with 24 m of fencing. What is the least possible area of Emma's garden? What is the greatest possible area? I don't understand what to do? How do we find the least and greatest possible area? Lauren Grade 6
*Friday, May 8, 2015 at 6:55pm*

**math**

A marksman is shooting at a target hits it 12 1/2% of the time. How many times must he shoot to register 100 hits.??
*Friday, May 8, 2015 at 6:53pm*

**math**

when the price of chain increased from 16.4 cents to 20.5 cents . What was the percent increase in the cost of chain.?
*Friday, May 8, 2015 at 6:28pm*

**math**

solve y"+4y-4z'=3x z"+z-y'=1-x where y(0)=z(0)=1 and y'(0)=z'(0)=0 by laplace transform
*Friday, May 8, 2015 at 6:15pm*

**math stuck please help!!!**

A private plane traveled from Seattle to a rugged wilderness , at an average speed of 252 mph . on the return trip , the average speed was 180 mph . if the total time was 9 hours how far is Seattle from the wildness
*Friday, May 8, 2015 at 6:09pm*

**strategic math**

A roof is supported by 7 rafters, each 6 1/2 feet long at 70 cents a running foot. How much did these rafters cost?
*Friday, May 8, 2015 at 5:59pm*

**general math**

if 3 1/2 bags of seed cost $35, what will 4 1/2 bags cost?
*Friday, May 8, 2015 at 5:55pm*

**math**

the baseball game lost 13 games this season. that was 5/8 of all they played. how many games did they play this season?
*Friday, May 8, 2015 at 5:50pm*

**math**

what is the theme of the story the Christmas goblin by Charles Dickens?
*Friday, May 8, 2015 at 5:21pm*

**MATH**

Your original purchase price was $825.00 plus 7% sales tax. You enter into an agreement where the interest (12.5% APR) is waived for the first 12 months provided you make the required monthly payments; otherwise the interest is accrued from the date of purchase. You miss the ...
*Friday, May 8, 2015 at 4:56pm*

**extreme math help please**

Explain how to write a function rule from the table below. Then write a function rule. x|2|4|6| y|1|0|-1|
*Friday, May 8, 2015 at 4:29pm*

**Math please**

Hi nobody helped me can you check on what I asked? Thank us
*Friday, May 8, 2015 at 3:37pm*

**Math to hard please help**

I was skipped over can someone please help me. Thank you
*Friday, May 8, 2015 at 3:34pm*

**math**

What function is a quadratic function? A.y=1/y B.y=5x-7 C.y=-x2+2y D.y=|x| Is the answer C?? Thank you
*Friday, May 8, 2015 at 3:05pm*

**math**

The data in the table illustrates a linear function. What is the slope of the linear function? x| 0| 2|4|6 y|-5|-2|1|4 Please shoe me how to figure this out? Thank you.
*Friday, May 8, 2015 at 2:41pm*

**Math**

1.What is the unit rate for Fred's Sub shop?(Will post photo/link in the comments) A. $10 for 2 subs B. $5 for 2 sub C. $1 for 1/5 of a sub D. $30 for 6 subs 2. What is the slope-intercept equation for the cost of a sub at Fred's sub shop? A. y = 2x B. y = 10x C. y = ...
*Friday, May 8, 2015 at 1:50pm*

**Math - Polynomials**

off-topic: yay it's friday :D Simplify each polynomial. 1. 6g + 8k + 9g + 2k A) 3g + 10k B) -3g + 10k *** C) 17gk D) 10k - 3 2. -4x + 6x2 + 5x A) 7x^3 B) 6x^2 + 9x *** C) 6x^2 - 9x D) 6x^2 + x 3. a^2 + 5a - 3a^2 A) 5a + 2a^2 *** B) 5a - 2a^2 C) 2a^2 + 5a D) 5a - 3a^2 Are ...
*Friday, May 8, 2015 at 12:37pm*

**Economic Math**

Suppose the supply and demand for milk is described by the following equations: Qd=600-100P, Qs = -150+150P, where P is price in dollars . Qd is quantity demanded in millions of gallons per year. A. Create supply and demand tables corresponding to these equations. B. Graph ...
*Friday, May 8, 2015 at 12:30pm*

**7th grade math (probability)**

I'm re-posting corrections originally from Wednesday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number ...
*Friday, May 8, 2015 at 8:16am*

**math**

If A + B + c = 180 then show that sinA + sinB + sinC=4cosA/2. cosB/2 . cosC/2
*Friday, May 8, 2015 at 7:12am*

**math**

97 is 5% of what number
*Friday, May 8, 2015 at 6:21am*

**Math**

The sea ice around the south pole fluctuates between 18 million square kilometers in September to 3 million square kilometers in March. During how many months are there more than 15 million square kilometers of sea ice?
*Friday, May 8, 2015 at 4:54am*

** Math**

Which table of values shows y=x-8? A. x|y -5|3 -8|0 -7|1 B.x|y -5|-13 -8| 0 -7|-15 C.x|y -5|-13 -8|0 -7|1 D.x|y -5|-13 -8|-16 -7|-15 Is the answer D? Thank you.
*Friday, May 8, 2015 at 2:03am*

**math**

the ratio of gasoline to oil need is 16:1 if you have 3.5 ml of oil how many ml of gasoline must you add to get the proper mixture find answer
*Thursday, May 7, 2015 at 11:22pm*

**Math**

provide that 4sin¦Ðsin(60¡ã-¦;Ð)sin(60 ¦Ð)=sin3¦Ð
*Thursday, May 7, 2015 at 11:18pm*

**Math**

Eduardo started a business selling sporting goods. He spent $7500 to obtain his merchandise, and it costs him $300 per week for general expenses. He earned $850 per week in sales. What is the minimum number of weeks it will take for Eduardo to make a profit? Write an ...
*Thursday, May 7, 2015 at 10:43pm*

**grade (5) math**

The Rowans decided to build a pool in their backyard. What would be the area and perimeter of this pool? Let X=20 1/2 feet and y=2 1/2 yards. Pls help me!!
*Thursday, May 7, 2015 at 10:42pm*

**grade (5) math**

Tony made 85% of his field goal attempts if he made 40 attempts how many field goals did he make? Pls help!!
*Thursday, May 7, 2015 at 10:31pm*

**Math**

The length of a rectangle is four times its width. If the perimeter is at most 130 centimeters, what is the greatest possible value for the width? 13 cm 21.7 cm 26 cm 52 cm
*Thursday, May 7, 2015 at 10:28pm*

**Math**

Using the following information for the Vertex and Directrix, write the standard form equation for the parabola with what is given below. Vertex: (-2,1) Directrix: x=1
*Thursday, May 7, 2015 at 9:50pm*

**math**

Marcus has 4 ties and 5 shirts and 3 pair of pants. How many outfits can he make?
*Thursday, May 7, 2015 at 9:28pm*

**Math**

A grade six class is having a fundraiser. The class boys have three bags of apples. Each bag has 24 apples. The total cost of the three bags of apples is $12.24. The class sells the apples for 0.75 each. How much will the class gain per apple?
*Thursday, May 7, 2015 at 9:20pm*

**math**

Use the data in the table to find the slope of the line. x 3 6 9 12 y 1 -1 -3 -5 A. 3/2 B. -3/2** C. -2/3 D. 2/3 am i right?
*Thursday, May 7, 2015 at 8:26pm*

**Math**

The 13-member math club needs to choose a student government representative. They decide that the representative, who will be chosen at random, CANNOT be any of the 3 officers of the club. What is the probability that Samara, who is a member of the club but NOT an officer will...
*Thursday, May 7, 2015 at 8:10pm*

**Math**

There are 25 computers in a math lab. There are 6 activity booklet for very 2 computers in the math lab. How many activity booklets are in the math lab?
*Thursday, May 7, 2015 at 7:45pm*

**math**

William, Jan, and Greg have a total of $26. Greg has the most money. Jan has twice as much money as William. Greg has $11. How much money does Jan have?
*Thursday, May 7, 2015 at 6:36pm*

**math**

When Cheryl goes mountain climbing, she rests 5 minutes every 15 minutes that she climbs.If Cheryl combined time is 2 hours, how many minutes does she rest? P.S I don't want the answer i just need to know the operation to solve this problem
*Thursday, May 7, 2015 at 6:23pm*

**math**

I have a question on my math that my teacher cant help me with because this one is for try it. Can you help me see if it is right?: It says: 12 . Wich is equal to 30 hundreths? A)3 thousandths B)3tenths C)3 tens D)3thousands I think the answer is B but, it really confuses me ...
*Thursday, May 7, 2015 at 5:07pm*

**Math**

John and Jack to help their mothers make fudge for their classroom parties in different classes John's class received 2 1/2 pounds for 25 children Jack's class received 3 1/2 pounds for 35 children which class was able to each more fudge per student?
*Thursday, May 7, 2015 at 4:46pm*

**Math**

When the price of paper increases from $250 to $257 per ton, the quantity supplied increases from 350 to 390 tons per day. The price elasticity of supply is:
*Thursday, May 7, 2015 at 4:03pm*

**chemistry**

A particular brand of toothpaste claims to contain 0.24 wt% sodium fluoride. What mass in grams of fluoride ion would be present in the average amount of toothpaste used to brush one's teeth, about two grams? Now this is a weight percent concentration question, I know that...
*Thursday, May 7, 2015 at 3:48pm*

**Math- Sequences**

What are the first four terms of the sequence represented by the expression n(n-2)-3? -5, -2, 1, 4 -4,-3, 0, 5 3, 0, 3, 6 2, 0, 2, 4 I believe it's C?
*Thursday, May 7, 2015 at 2:51pm*

**math**

a fisherman has estimated that it takes 4 minutes to paint each square foot of a hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of 2 sides 28.5 feet by 10.5 feet?
*Thursday, May 7, 2015 at 2:14pm*

**Math**

Why did Gonzo walk around carrying Ice Cream and a pair of sparrows?
*Thursday, May 7, 2015 at 1:56pm*

**math collage algebra**

A Norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window (see figure). The perimeter of the window is 12 feet.
*Thursday, May 7, 2015 at 1:28pm*

**Math**

1.6g+8k-9g+2k 3g+10k -3g+10k*** 17gk 10k-3 2.-4x+6x^2+5x 7x^3 6x^2+9x 6x^2-9x 6x^2+x*** 3.a^2+5a-3a^2 5a+2a^2 -2a^2+5a*** -3a^2+6a 5a-3a^2 4.3x^2+8x+7x 3x^2+15x*** 18x^3 3x^2+1 3x^2-x 5.Find the degree of -5w-4w^2+7w+16 -5 16 14 3*** ***=my answer
*Thursday, May 7, 2015 at 1:27pm*

**math**

A contractor, Mr. Parker charged his customer $100 for painting a rectangular ceiling of length 5.4m and width 3m. Another contractor, Mr. Lewis charged his customer $115 for painting a rectangular ceiling of length 5.7m and width 3.2m.The quality of work is the same and both ...
*Thursday, May 7, 2015 at 1:23pm*

**math**

what are the next three terms in the sequence -3 6 15 24 35, 46, 57 34, 44, 54 33, 44, 56 33, 42, 51 i think it's d
*Thursday, May 7, 2015 at 12:55pm*

**Math discussion **

As part of their job, meteorologists use data to make weather predications. How accurate are their predications? What are other scenarios in which you would use to data to make a predication? How would you defend your predication using data?
*Thursday, May 7, 2015 at 12:07pm*

**math**

who would you write 36% of what number is 18?
*Thursday, May 7, 2015 at 11:45am*

**math**

what is the total amount of edging that would be required to cover all edges of a rectangular prism measuring 10 cm by 30 cm by 15 cm?
*Thursday, May 7, 2015 at 10:49am*

**MAth**

Calculate the perimeter of a right triangle where the legs are 6 cm and 8 cm
*Thursday, May 7, 2015 at 10:48am*

**Math**

How do I figure out what quadrilateral has 90 90 125 65 digrees on each side?
*Thursday, May 7, 2015 at 10:31am*

**Math**

find the three geometric means between -2/3 and -54
*Thursday, May 7, 2015 at 10:27am*

**Math**

find the third term in the expansion of (3x-y)^6
*Thursday, May 7, 2015 at 10:07am*

**math**

Rich has 3 pieces of pizza. Each pizza end forms a 20° angle. If all of the pieces were placed together what would the size of the angle be?
*Thursday, May 7, 2015 at 8:59am*

**Math**

Hint: 6% x $1,000,000 / $1,000,000 – {20% x ($1,000,000 – (6% x $1,000,000))] = ?
*Thursday, May 7, 2015 at 6:05am*

**Math **

Hint: 6% x $1,000,000 / $1,000,000 – {20% x ($1,000,000 – (6% x $1,000,000))] = ?
*Thursday, May 7, 2015 at 6:05am*

**Math Please Check My Answer**

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
*Thursday, May 7, 2015 at 5:14am*

**Math**

Construct a square based pyramid of volume 216cm3. What are the dimensions?
*Thursday, May 7, 2015 at 5:07am*

**Math**

Insert parentheses to make this equation correct: 7 - 6 x 7 / 5 + 7 = - 43.4 / is used for division sign
*Thursday, May 7, 2015 at 12:41am*

**Math**

Simplify 1) x + 1/ x - 1 + x^2 -1 / x + 1 2) 4x/x^2 - 1 - x + 1/x - 1
*Thursday, May 7, 2015 at 12:30am*

**Math**

A $10 bottle of detergent yields 10 loads of laundry. Allen tries this detergent & finds he can do only 8 loads of laundry from 1 bottle. What fraction of the advertised # of loads was he able to do?
*Wednesday, May 6, 2015 at 11:57pm*

**Math**

i really dont understand. i tried figure out. i started with the first charges: sqrt[2(20)(100))/0.05} Suppose you have a choice of three suppliers for footballs. the first charges $100 per delivery but won't deliver more than 200 at a time; the second charges $100 also ...
*Wednesday, May 6, 2015 at 10:56pm*

**Math**

Jeanine used 21/2 cups of flour to make muffins and 1 3/4 cups of flour to make biscuits. After borrowing 1/4 cup of flour,she had 2 1/4 cups left to make bread. How much flour did she have to begin with?
*Wednesday, May 6, 2015 at 9:56pm*

**7th grade math (probability)**

I'm posting corrections from yesterday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and choose a ...
*Wednesday, May 6, 2015 at 9:46pm*

**Math**

As part of a pancake recipe, you mix 3/4 cup of milk for every 1 cup of flour to make 7 cups of batter. How much of each ingredient do you use?
*Wednesday, May 6, 2015 at 9:42pm*

**math**

write 10 1/2% of 60
*Wednesday, May 6, 2015 at 8:57pm*

**math**

Q - 8 = -9
*Wednesday, May 6, 2015 at 8:54pm*

**math**

use L'Hospital's rule to evaluate: limit as x approaches to 0 of (1/sinx -1/x)
*Wednesday, May 6, 2015 at 8:40pm*

**math**

48,778 ; 41,046 ; 29,083 ; 36, 394 ; 32,302 ; 42,787 ; 41,972 ; 37,229 ; 25,314 ; 31,920 ; 38,030 ; 38,445 ; 30, 750 ; 38,886 ; 36,770 ; 46,046 use five classes. is it reasonable to assume that the life spans are normally distributed? I don't get what am I suppose to do?
*Wednesday, May 6, 2015 at 8:32pm*

**Math**

This is my sample: 29,083 ; 25,314, 31,920 ; 30,750 ; 32,302 I need to find the mean and standard deviation of this sample?! How can i assure the life spans are normally distributed?
*Wednesday, May 6, 2015 at 7:59pm*

**calc (confused)**

A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the y-axis. Please show all steps and ...
*Wednesday, May 6, 2015 at 6:46pm*

**Math**

Find the level of elevation of the sun when a 842 foot building casts a shadow72.6 feet long
*Wednesday, May 6, 2015 at 6:29pm*

**math**

City wide delivery service uses vans costing $24800 each. How much will the company have to invest today to accumulate enough money to buy six new vans at the end of 4 years? City wides bank is currently paying 12% interest compounded quarterly
*Wednesday, May 6, 2015 at 6:14pm*

**Math Help**

With the given information below, write the standard form equation for the parabola. 1.) Vertex: (-1,2) Focus(-1,0) 2.) Vertex: (-2,1) Directrix x=1
*Wednesday, May 6, 2015 at 6:03pm*

**Math**

What is the exact value of sin(-15 degrees)?
*Wednesday, May 6, 2015 at 5:36pm*

**math**

1. two circles. x^2+y^2-16x-8y+35=0 and x^2+y^2=5 are given. a. write the equations in the standard form. b.prove that the circles touch each other. c.hence calculate the equation of their common tangent 2. find the equation of a. circle. with centre c(2;3) and which I is the ...
*Wednesday, May 6, 2015 at 2:41pm*

**Math **

. At a track meet, 50 people ran the 100-meter dash. 2 people finished in 11 seconds, 5 people finished in 12 seconds, 8 people finished in 13 seconds, 10 people finished in 14 seconds, 21 people finished in 15 seconds, 2 people finished in 16 seconds, and 2 people finished in...
*Wednesday, May 6, 2015 at 1:56pm*

**math**

Suppose the matrix A has eigenvalues lambda_1 = -1, lambda_2 = 1, lambda_3 = 2, with corresponding eigenvectors v_1 = [0 5 3]^T, v_2 = [2 0 1]^T, v_3 = [1 -1 0]^T. If you diagonalize A as A = PDP^-1 with P = [2 2 0; p_21 p_22 2; p_31 p_32 p_33], D = [2 0 0, 0 1 0; 0 0 -1], ...
*Wednesday, May 6, 2015 at 12:26pm*

**math**

A. determine the equation of the circle passing through points A(3;2) B(8;12) and C(-6;-2) B. a chord of the circle x^2+y^2=50 has a midpoint at (6;3). determine the equation of this chord.
*Wednesday, May 6, 2015 at 11:24am*

**finance math**

A single person earns a gross biweekly salary of $780 and claims 6 exemptions. What is the person's net pay? a. It is the same as the gross pay. b. It is $11 more than the gross pay. c. It is $11 less than the gross pay. d. It is $13 less than the gross pay.
*Wednesday, May 6, 2015 at 11:07am*

**math**

A countrywide estate agency specializes in selling commercial ventures. Their records show that the mean selling time is less than 90 days. Because of recent economic conditions, they believe that the mean selling time is now greater than 90 days. A countrywide survey of 100 ...
*Wednesday, May 6, 2015 at 7:08am*

**math**

find the slope of the following graphs. x -1,0,1,2 y 4,2,1,-2 a.1 over 2 b.2 c.-2* d.- 1 over 2 find the slope of the following graphs. x -2,2 y 5,1 a.3 over 2 b.1 c.-1* d.- 3 over 2 find the slope of the following graphs. x 0,3 y 0,2 a.2 over 3* b.3 over 2 c.3 d.- 2 over 3 ...
*Wednesday, May 6, 2015 at 2:25am*

**math**

prove that: 4cosec2ACot2A=cosec^2A - sec^2A
*Wednesday, May 6, 2015 at 2:10am*

**Math**

A cylinder cop has a circular base of radius 7cm & height of 10cm taking 22/7(a)calculate it curved surface(b)d area of it circular base
*Wednesday, May 6, 2015 at 1:57am*