Sunday

October 4, 2015
Total # Posts: 686

**grammer essentials**

How would you change this sentence- The family history includes myocardial infarction in the father, who relates he died from this at an early age.
*October 2, 2015*

**Physics**

A concrete sidewalk is constructed between two buildings on a day when the temperature is 25 0C. The sidewalk is 6 m long and consists of two slabs each 3 m in length and of negligible thickness. What would be amount of buckling (displacement) upwards that will occur in the ...
*September 27, 2015*

**Algebra**

Use method II to simplify the following complex rational expression. 5-13/x-2 divided by 6/x-2-7. I'm not sure if this is the proper set up, but it's suppose to be a division on top and bottom. Please if someone could help
*September 26, 2015*

**Math**

Thanks for ur help. Really appreciated!
*September 22, 2015*

**Math**

Thanks for ur help. Really appreciated!
*September 22, 2015*

**Math**

Draw 5 square and divide each square into eighths. Right?
*September 22, 2015*

**Math**

8 students share 5 square pieces of cake equally. Draw to show how much each person gets.
*September 22, 2015*

**Math**

Determine the value or values of the variable for which the expression is defined. 3/x-5
*September 14, 2015*

**Math**

1 hr = 60minutes 1 day = 24 hrs = 1440 minutes in a day 300000/1440 = 208.33 ?
*September 7, 2015*

**Math**

On what day in the year 1943 was the year 300 000 minutes old?
*September 7, 2015*

**Math**

Sondra has a lot of cats (which have four legs) and parakeets (which have two legs) but no other pets. Among her pets, Sondra counts 57 heads and 176 legs. How many cats does she have?
*September 7, 2015*

**Math**

Draw the graph n < 4, with the constraint n > 0.
*September 5, 2015*

**math**

I know you have to group this problem but I'm not sure how to solve this, if someone could step by step I would appreciate it. 6x^3 +14x^2-27x-63
*September 1, 2015*

**Algebra**

A rock is thrown upward with a velocity of 15 meters per second from the top of a 49 meter high cliff, and it misses the cliff on the way back down. When will the rock be 3 meters from the water, below? Round your answer to two decimal places.
*August 29, 2015*

**Math**

Which inequality represents this situation? Ari works h hours each day. He earns $21 per hour. Ari earns less than $150 a day. How many hours does he work each day? a. 21h > 150 b.21 + h < 150 c.h/21 < 150 d.21h < 150
*August 10, 2015*

**calculus**

when the line x = 9 please
*July 22, 2015*

**calculus**

find volumes of solids generated by revolving the regions bounded by the graphs of the equations about the given lines. y=square root of x y=0 x=3
*July 22, 2015*

**algebra **

A company that manufactures bikes has a fixed cost of $8,000. It cost $800 to produce each bike. The total cost for the company is a sum of fixed cost and variable costs. Write the total cost, C, as a function of the number of bikes produced x then find C(70). Find the cost ...
*July 12, 2015*

**Math**

An invoice for a camcorder that cost $1210 is dated August 2, with sales terms of 4/10 EOM. If the bill is paid on September 5, how much is due for the net amount due?
*July 1, 2015*

**algebra**

In mixing a weed killing chemical a 40% solution of the chemical is mixed with an 85% solution to get 20 L of a 60% solution. How much of each solution is needed?
*May 9, 2015*

**math**

Given z(t) = square of t +1− t^3 , find z(2).
*April 13, 2015*

**chemistry**

What volume of a 0.553 M calcium hydroxide solution is needed to exactly neutralize 7.34 grams of KHP
*April 9, 2015*

**UNISA**

he earns 0.8% interest per month while the amount is less than R70000 and 0.7% interest per month if the amount is equal to or more than R70000, the interest is added to the total amount, calculate how many months he will have to save
*April 7, 2015*

**Chemistry **

Nitrogen dioxide reacts with carbon monoxide to produce nitrogen monoxide and carbon dioxide in the reaction, . The first step in the reaction is proposed to be two NO2 molecules colliding to form NO3 and NO. The NO3 intermediate then reacts with CO to form CO2. What is the ...
*February 16, 2015*

**Physics**

Does the potential inside a hollow condutorchange?
*February 10, 2015*

**Math**

If a spherical tanl 4m in diameter can be fillef with a liquid for $900, find the cost to fill a tank 12m in diameter. The cost to fill the 12m tank is $__.
*January 22, 2015*

**math**

-3n-(-1)=29 My answer is n=9.9 I doubt plZ help. Thank you,
*November 2, 2014*

**math**

At which grade level is it most appropriate for children to group by more than one attribute?
*October 19, 2014*

**social studies**

What kind of industry is diamond ring?
*October 4, 2014*

**physics**

A chunk of Martian rock falls off of a cliff and drops 47.7 m in 5.00 s. What is the acceleration due to gravity on the surface of Mars?
*September 29, 2014*

**algebra**

Thank you very much for your time and help!
*September 22, 2014*

**algebra**

105/(-20+15) ------------------- 45/(-9)+12 Plz help me to solve this question. Thanks!
*September 22, 2014*

**Math**

Write the opposite of 0 Celsius and 32f temperature as integer. Plz help
*September 6, 2014*

**math**

Find the geometric series whose second term is 1.5 and the fifth term is 0.1875
*August 19, 2014*

**Algebra**

The sum of two numbers is 9. Four times the larger number plus three times the smaller number is 48. Find the numbers. Thank you
*August 12, 2014*

**Algebra**

Two angles are complementary. Their difference is 50^*. Find the angles.
*August 12, 2014*

**Math**

A basketball player scored 18 times during one game. He scored a total of 35 points, two for each two point shot and one. For each free throw. How many two point shots did he make? How many free throws?
*August 12, 2014*

**Algebra**

The plans for a she'd call for a rectangular floor with a perimeter of 276ft. The length is two times the width. Find the length and the width
*August 10, 2014*

**Math**

An architect has allocated a rectangular space of 275ft^2 for a square dining room and a 14ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
*August 5, 2014*

**Math**

The number of tickets sold each day for an upcoming performance of Handel,s Messiah is given by N(x)=-0.4^2+8.8x+10, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
*August 5, 2014*

**Math**

A model rocket is launched with an initial velocity of 164ft/sec. It's height h, in feet, after t seconds is given by the formula h=164t-16t^2. After how many seconds will the rocket first reach a height of 400ft?
*August 2, 2014*

**Math**

An architect has allocated a rectangular space of 240ft^2 for a square dining room and a 14 ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
*August 2, 2014*

**Algebra 2**

Find the exact value of cos 315 degrees. answers: 3/2, -1/2,2/2, -2/2
*May 19, 2014*

**Math**

dartboard is 16 inches bulls eye 6 inches
*May 19, 2014*

**Math**

Jeff has 12 coins that have a total value of $2.25.If there are only quarters and dimes, how many of each kinds are there?
*May 3, 2014*

**Math**

A patio was to be laid in a design with one tile in the first row,two tiles in the second row,three tiles in the third row, and so on. Mr Tong had 60 tiles to use. How tiles should be placed in the bottom row to use the most tiles?
*May 3, 2014*

**Math**

The book shelly is reading has 235pages. She has already read 110 pages. If she reads 25 pages a day from now on, how many more days will it take her to complete the book?
*May 3, 2014*

**Algebra**

A scientist wants to research the potential spread of germs by contact. She knows that the number of possible handshakes within a group of n people is given by the equation N=1/2(n^2-n). Everyone at a party shook hands. There were 253 handshakes in all. How many people ...
*April 30, 2014*

**Algebra**

$5400 is invested, part of it at 10%, and part of it at6%. For a certain year, the total yield is $444.00. How much was invested at each rate?
*April 30, 2014*

**Algebra**

$6300 is invested, part of it at 11% and part of it at 8%. For a certain year, the total yield is $597.00. How much was invested at each rate?
*April 17, 2014*

**Algebra**

The accompanying bar graph shows the milk fat percentages in three dairy products. A=whole milk @4%. B= milk for cream cheese @8%, and C= cream @30%. How many pounds each of whole milk and cream should be mixed to form 200 lb of milk for cream cheese? How many pounds of whole ...
*April 13, 2014*

**Algebra**

$6300 is invested, part of it at 11% and part of it at 8%. For a certain year, the total yield is $597.00. How much was invested at each rate?
*April 13, 2014*

**Algebra**

One canned juice drink is 20% orange juice! another is 5% orange juice. How many liters of each should be mixed together in order to get 15L that is 16% orange juice?
*April 13, 2014*

**Math**

A disc jockey must play 14commercial spots during 1hour of radio show. Each commercial is either 30 seconds or 60 seconds long. If the total commercial time during 1hour is 11 minutes, how many 30 second commercials were played that hour? How many 60 second commercials?
*April 13, 2014*

**trig**

Use standard identities to express sin(2θ+π/3) in terms of sinθ and cosθ
*April 10, 2014*

**math**

As a fundraiser a school club is sellin posters. The printer charges a $24 set up fee plus $o.20 for each poster. Then the cost y in dollars to print is given by the linear equation y=0.20x+24 A. The printing of 50 posters cost? The printing cost of 100 posters cost? B. Find ...
*April 7, 2014*

**math**

how do i build a rectangler pen using 40 meters
*April 7, 2014*

**Math**

Darla is building a desk. To make sure she had made a square corner, she measures 7ft from the corner along one edge, and 8ft from the corner of the other edge. How long should the diagonal be between those two points if the corner is a right angle?
*April 1, 2014*

**Math**

What is y+3-4=5, with the sqrt.(...) sign over y+3
*April 1, 2014*

**Algebra**

What is the sqrt(...) of y+3-4=5, where the sqrt is over y+3.
*April 1, 2014*

**Algebra**

Steve, no the sqrt(...) is over the y+3 not over the 5
*April 1, 2014*

**Algebra**

I'm not sure how to write a radical sign on the computer but the problem is y+3-4=5 inside a radical sign.
*April 1, 2014*

**Algebra**

The formula r =2 sqrt.5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will a car skid at 60 mph?
*March 31, 2014*

**math**

Solve the trigonometric equation 3sinθ=1.2 for 0≤θ≤4π
*March 31, 2014*

**physic**

A stationary 2.0 kg object is located on a table near the surface of the earth. The coefficient static friction between the surface is .80 and the coefficient of the kinetic friction is 0.65. A horizontal force of 5N is applied to the object. Determine the force of friction. ...
*March 27, 2014*

**physic**

A stationary 2.0 kg object is located on a table near the surface of the earth. The coefficient static friction between the surface is .80 and the coefficient of the kinetic friction is 0.65. A horizontal force of 5N is applied to the object. Determine the force of friction. ...
*March 27, 2014*

**math**

Graph the function f(x)=1/3-x (x≠3)
*March 25, 2014*

**math**

If f(x)=2x-1 and g(x)=x^2-x find : 1. g(g(x)) 2. g(f(x)) 3. f(g(x)) 4. f(f(x))
*March 23, 2014*

**Math**

An architect has allocated a rectangular space of 465ft^2 for square dining room and a 16ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
*March 21, 2014*

**Math**

The number of tickets sold each day for an upcoming performance of Handels Messiah is given by N(x)=-0.4x^2+11.2x+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
*March 21, 2014*

**Math**

The base of a triangle is 6cm greater than the height. The area is 20cm^2. Find the height and the length of the base.
*March 20, 2014*

**Math**

An architect has allocated a rectanglular space of 646ft^2 for a square dining room and a 15ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
*March 20, 2014*

**ROCKS :D just want to make sure.**

b,b,b,a
*March 20, 2014*

**Math**

The number of tickets sold each day for an upcoming performance is given by N(x)=-0.3x^2+9x+15, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
*March 18, 2014*

**Math**

A 15-foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 12 feet from the base of the building. How high up the wall does the ladder reach?
*March 18, 2014*

**math**

A 10 foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 8 feet from the base of the building. How high up the wall does the ladder reach.
*March 15, 2014*

**math**

the number of tickets sold each day for an upcoming performance is given by N(x)=-0.5x^2+13x+15 where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day? Ticket sales peak ___ days after ...
*March 15, 2014*

**Math**

An architect has allocated a rectangular space of 264ft^2 for a square dining room and a 10ft wide kitchen. What is both the width of the square dining room and the length of entire space.
*March 15, 2014*

**Math**

Could someone please help me solve this radical equation of 2x+7-2=x It's suppose to have the radical sign but I don't know how to put it on here. Thank you
*March 11, 2014*

**Math**

Two motorcycles travel toward each other from cities that are about 320km apart at rates of 95km/hr and 65km/hr. They started at the same time . In how many hours will they meet?
*March 5, 2014*

**Math**

A train leaves a station and travels north at a speed of 45mph. Four hours later, a second train leaves on a parallel track and travels north at 105 mph. How far from the station will they meet? The trains will meet ________ miles away from the station
*March 5, 2014*

**Math**

Give the exact and approximatel solutions to three decimal places. X^2-7x+7=0
*March 5, 2014*

**Math**

Solve the following for x X^2+14x+4=0
*February 25, 2014*

**Math**

Give exact and approximate solutions to three decimal places. X^2-5x+3=0
*February 25, 2014*

**Math**

Give the exact and approximate solutions to three decimal places. X^2-7x+3=0 The exact solutions are x=________ The approximate solutions to 3decimal places are x=___________
*February 24, 2014*

**Math**

Find the total profit, the maximum value of the total profit, and the value of x at which it occurs when the revenue is given by R(x)=240x-x^2 and the cost is given by C(x)=5000+8x The total profit, P(x)=-x^2+_______x-5000
*February 24, 2014*

**Math**

Find the total profit, the maximum value of the total profit, and the value of x at which it occurs when the revenue is given by R(x)=240x-x^2 and the cost is given by C(x)=5000+8x.
*February 23, 2014*

**Math**

The number of tickets sold each day for an up coming performance of Handel,s Messiah is given by N(x)=-0.4x^2+8x+11, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day.
*February 23, 2014*

**Math**

An architect has allocated a rectangular space of 589ft^2 for a square dining room and a 12ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space. The width of the square dining room is _____ft The length of the entire ...
*February 23, 2014*

**Math**

The length of one leg of a right triangle is 8ft. The length of the hypothenuse is 2feet longer than the other leg. Find the length of the hypothenuse and the other leg. The length of the hypothenuse is _______ ft. The length of the other leg is ___________ft.
*February 20, 2014*

**Math**

A triangular traffic island has a base half as long as it's height. The island has an area of 144m^2. Find the base and the height.
*February 20, 2014*

**Algebra**

In 1991, the life expectancy of males in a certain country was 67.2 years. In 1995, it was 71.1 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990. The linear function E(t) that fits the data is E(t) =?t + ? (Round to the ...
*February 13, 2014*

**Algebra**

Find an equation of the line having the the given slope and containing the given point. M=4/5,(7,-4) The equation of the line is y=?
*February 13, 2014*

**Algebra**

In 1991, the life expectancy of males in a certain country was 70.8 years. In 1995, it was 74.6 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991.. The linear function E(t) that fits the data is E(t)= (Round to the nearest ...
*February 12, 2014*

**Algebra**

Find an equation of the line having the given slope and containing the given point. M=4/5,(3,-1) The equation of the line is y=
*February 12, 2014*

**Algebra**

Factor the following polynomial. 28x^3+59x^2+13x
*February 11, 2014*

**Algebra**

In 1991, the life expectancy of males in a certain country was 72.6 years. In 1996, it was 74.7 years. Let E represent the life expectancy in year t and represent the number of years since 1991. The linear function E(t) that fits that data is, E(t)=
*February 11, 2014*

**Algebra**

Find an equation of the line having the given slope and containing the given point. M=6/7, (5,-2) The equation of the line is y =
*February 11, 2014*

**Algebra**

Find an equation of the line having the given slope and containing the given point. Express your answer in the form y=b or y=mx+b M=0, (0,-5) The equation of the line is y=
*February 11, 2014*

**Math**

In1991,the life expectancy of males in a certain country was 72.6yrs. In 1996, it was 74.4 yrs. let E represent the life expectancy in year t and let t represent the number of years since 1991. The linear function E(t) that fits the data is E(t)=____ t + ________ Round to the ...
*February 10, 2014*