# Posts by Lucas

Total # Posts: 192

**Geometry**

If each of the sides of an isoceles triangle is 5 x the size of the baseline and the perimeter of the triangle is 121 cm, how many centimeters is each of the sides of the triangle? I have the sides at 50 cm and the base at 21cm. ?

*January 24, 2017*

**Writing**

I am writing an intro paragraph for comparing and contrasting private schools and public schools. NEED HELP!!

*January 23, 2017*

**Math**

using each digit 0-9 exactly once to complete addition problem where answer is four digits.

*January 19, 2017*

**Math**

is 1/4 i dont know how to solve it but i had the same question and my teacher told me it was 1/4

*November 11, 2016*

**Math**

The sum of two numbers is 82. The difference is 16. What are the two numbers?

*November 9, 2016*

**Math**

Thx

*October 20, 2016*

**Math-Direct Variation**

can you please show me how to set this up? The variables x and y vary directly. When x is 3, y is 6. Find x when y = 2/3

*August 12, 2016*

**Math**

You run a small furniture business. You sign a deal with a customer to deliver up to 500 chairs, the exact number to be determined by the customer later. The price will be $120 per chair up to 400 chairs, and above 400 the price will be reduced by $0.25 per chair (on the whole...

*May 5, 2016*

**Math**

You run a small furniture business. You sign a deal with a customer to deliver up to 500 chairs, the exact number to be determined by the customer later. The price will be $120 per chair up to 400 chairs, and above 400 the price will be reduced by $0.25 per chair (on the whole...

*May 4, 2016*

**Math**

You run a small furniture business. You sign a deal with a customer to deliver up to 500 chairs, the exact number to be determined by the customer later. The price will be $120 per chair up to 400 chairs, and above 400 the price will be reduced by $0.25 per chair (on the whole...

*May 4, 2016*

**Maths**

A rectangular room 8m long by 5m wide contains 129m square of air. Calculate the height of the room. I assume that the above question is a trick question. Since the room is 8m high, it then goes that the height I 8metres. Thank you.

*April 23, 2016*

**Science**

A microwave oven supplies 1.000kj per second.how many min should be set on the microwave in order to heat 250.g of water from 24.3 degrees c to its boiling point?

*February 25, 2016*

**science**

find the angle of elevation of a gun that fires a shell with a muzzle velocity of 120m/s and hits a target on the same level but 1300m distant.

*February 16, 2016*

**Math**

PLEASE HELP!!?!?!!

*February 5, 2016*

**Math**

How do you DO THIS? 4+8+12+16+20... +392+ 396+ 400?

*February 5, 2016*

**Spelling**

What are you looking for? I'm just going to assume: Correction Monkey asked Zebra, "Did you paint your stripes yourself?" How did Zebra reply? Use quotation marks. The Zebra replied, "No, it's all natural"

*January 26, 2016*

**input output**

can uhh someone please help?

*January 26, 2016*

**input output**

I'm in 12th grade. But I find this 6th grade problem a bit CHALLENGING. X: 4 12 Blank Blank Y: 6 18 Blank 60 Someone please solve this. Like.. WHAT. (Solve the blanks)

*January 26, 2016*

**science**

Is is a solenoid?

*January 22, 2016*

**science**

What is the name for the coil of wire around a ferromagnetic material?

*January 22, 2016*

**Quadratic Equation (math)**

Complete the square. x^2 + _____ + 36 Help me? I don't understand.

*January 15, 2016*

**algebra**

4(7x-4) =124

*January 15, 2016*

**math**

7-5=2

*January 7, 2016*

**materials bahavior**

A specimen has an initial diameter of 200mm and a length of 700mm. At a stress of 40MPa and a temperature of 538oC the steady state strain rate is about 2×10−4% per hour. Find the primary creep elongation and the steady state creep elongation after 5000 hours given...

*December 7, 2015*

**math**

Find two values defining tails of the normal distribution with an area of 0.05 each. Thank you so much for huge help:))

*November 23, 2015*

**Algebra 2 (Math)**

Solve by the system of equations by substitution. x + 2y + z = 14 y = z + 1 x = -3z + 6 Anyone able to help me with this? I've been stuck on it all day and can't seem to solve it, it doesn't make any sense to me.

*November 19, 2015*

**Algebra**

The Smiths invested $14,000, part at 3% simple interest and the rest at 4% simple interest for a period of one year. if the total interest earned was $460, how much was invested at each rate?

*October 27, 2015*

**math statistic**

In Megabucks, a player who correctly chooses five out of the six winning numbers gets $400. What is the probability of winning $400? Answer is 0.0000924 in the book but I really don't know where I'm doing mistake. my work is = 6!/5!(1!) combination Thank you so so much...

*October 5, 2015*

**physics**

A 8.74-kg hanging weight m2 is connected by a string over a pulley to a 5.00-kg block m1 that is sliding on a flat table. If the coefficient of kinetic friction is 0.190, find the tension in the string.

*September 28, 2015*

**math**

This year Gloria's garden is one foot wider and three feet shorter? What were the dimensions of the garden last year?

*September 18, 2015*

**physics**

One simple model for a person running the 100m dash is to assume the sprinter runs with constant acceleration until reaching top speed,then maintains that seed through the finish line.if sprinter reaches his top speed of 11.1m/s in 2.54s. What will be his total time?

*September 16, 2015*

**Math**

An individual federal tax return form asks, among other things, for the following information: income (in dollars and cents), number of dependents, whether filing singly or jointly with a spouse, whether or not deductions are itemized, amount paid in local taxes. Describe the ...

*September 12, 2015*

**statistic**

An individual federal tax return form asks, among other things, for the following information: income (in dollars and cents), number of dependents, whether filing singly or jointly with a spouse, whether or not deductions are itemized, amount paid in local taxes. Describe the ...

*September 12, 2015*

**Math**

Write an equation for the hyperbola. Vertices at ( -5,2) and (-1,2), passing through the point (-6,4) Could you be so nice and help me please:) I have still wrong answer and I have no idea where I'm doing mistake. My work: Horizontal transverse )( Center (-3,2) a= 2 (-6)^2...

*August 23, 2015*

**Math**

Thank you so much:)) you saved my life!!!!

*August 8, 2015*

**Math**

ln(y-9)-ln7=x+lnx Thank you sooo much for helping:))))

*August 8, 2015*

**College Algebra II**

A patient’s cost for a hospital stay is determined as follows: Admission = $50 Room charge: first night: $1000 nights 2-4: $1500 per night night 5 and beyond: $2000 per night Surgery: $8500 per surgeon, plus $3000 for an anesthesiologist (a) What would be the cost of a ...

*July 18, 2015*

**English**

I'll bet you can't guess my favorite musical instrument challenged my dentist

*April 14, 2015*

**Language Arts**

place sigth taste haering smell feeling

*February 11, 2015*

**Language Arts**

place

*February 11, 2015*

**biology**

What does the word cycle tell you about the chemical reactions of the Calvin cycle?

*November 5, 2014*

**Math**

x/9 -4= 5/18

*October 24, 2014*

**Physics**

There are 2 objects connected with ideal, massless string that is hanging over an ideal (massless and frictionless) pulley. The angled surface is at a 25.0 degree angle. All surfaces are firctionless. A force F1 is applied horizontally as shown to the right on object 2. ...

*October 9, 2014*

**science**

Which type of data is qualitative data? a.heights and meaters b. volume and milliliters c. calculations and density d. descriptions or behaviors

*September 23, 2014*

**Math Problem (please help)**

At the birth of a baby, a couple decides to make an initial investment of C at the rate of 7% compounded annually so that the amount will grow to $30,000 by her 10th birthday. What should their initial investment be? Round to the nearest dollars.

*September 9, 2014*

**math**

5184

*September 7, 2014*

**math**

If 1mechanic can do 4 machines in 6 hours how many machines can 48 mechanics do in 160 hours?

*September 7, 2014*

**math urgent please**

Thank you for your advice, I appreciate it really a lot, but unfortunately I always checked me writing and exercise is exactly copied from the book Oxvord IB diploma programme Mathematical studies standard level chapter 4 page 183. Why I was very confused because I'm ...

*September 3, 2014*

**math urgent please**

A fish tank in the shape of a cuboid has length 320 cm. Its length is twice that of its width. To enhance viewing, the area of the four vertical faces should be maximized. Find the optimum "viewing area" of a fish tank that is fixed to the wall so that the area of ...

*September 3, 2014*

**math**

Dear Steve, thank you so much for your really so huge help. I only wanted to ask you and I'm sure I'm wrong about it but Both students start with $200 and both how much money will have after they have passed START 10 times. I did: I used formula : un =u1+(n-1)d ...

*August 27, 2014*

**math**

Two students, Mary and John, play a game. Each time Mary passes “start” she received $25. Each time John passes “start” he receives 15% of the amount he already has. Both students start with $200. a. How much money will Mary have after she has passed “...

*August 27, 2014*

**Math**

1USD/xUSD = 0.753 EUR/ 610 EUR x= 810.09 USD 800 AUD/810.09AUD = 810.09 USD/1 USD x = 0.99 AUD Henry and Jack thank you so much for helping me but do you think my answer is correct? Thank you so much

*August 27, 2014*

**Math**

The exchange rate from US dollars (USD) to euros (EUR) is given by 1 USD = 0.753 EUR. Give the answers to the following correct to two decimal places. Roger receives 800 Australian dollars (AUD) for 610 EUR. Calculate the value of the US dollar in Australian dollars. Please ...

*August 27, 2014*

**5th grade math**

How do you find the dimensions of a box that hold 2xs as many cubes as a box that is 2 by 3 by 4?

*May 12, 2014*

**math**

Hi Steve, thank you so much for everything:))) Have a very nice day

*May 5, 2014*

**math**

Peter has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...

*May 5, 2014*

**Math**

Peter has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...

*May 5, 2014*

**math urgent please**

value of block is: 169,641 x0.03 $ / 12 = 0.42 $ 197.901 X 0.04 $/ 15 = 0.527736 $ 0.42 + 0.527736 = 0.947736 $ Petr could paint his entire block less than to $1.oo.

*May 4, 2014*

**math urgent please**

Petr has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...

*May 4, 2014*

**Math**

You are so so nice, thank you so much:)))))You saved my love!!!!

*May 4, 2014*

**Math**

Claire wants to determine how brightly to illuminate her stage. stage width (in metres) x stage length (in metres) x 0.14 = total watts for stage If her stage is 7.25 metros wide and 11.5 metres long, a) calculate the exact number of watts needid to illuminate the stage b) ...

*May 4, 2014*

**math**

Claire wants to determine how brightly to illuminate her stage. stage width (in metres) x stage length (in metres) x 0.14 = total watts for stage If her stage is 7.25 metros wide and 11.5 metres long, a) calculate the exact number of watts needid to illuminate the stage b) ...

*May 3, 2014*

**Math**

Caroline says to Jed, "If you insult me one more time, I am going to slap you!" Jed replies, "That's OK, Caroline. If I don't insult you, you will be able to slap me anyway." If p=you insult me one more time and q=I am going to slap you Explain ...

*May 3, 2014*

**Math**

Thank you so much . a)Equation is x=-1vertical asympt. Is it correct please?

*May 3, 2014*

**Math**

two functions are defined as follows: f(x)=3/x+1 and g(x)=x-6 a) Write the equations of the vertical and horizonal asymptotes of f. b) Determine the coordinates of the points where f(x) = g(x) Thank you so much for huge help Is ti correct please? answer for a) vertical asympt...

*May 3, 2014*

**Math**

A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...

*April 28, 2014*

**math**

A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...

*April 28, 2014*

**Math**

Steve, thank you so much, you are amazing!!!!!

*April 28, 2014*

**Math**

A swimming pool is in the shape of a cuboid with dimensions 50 metres long by 25 metros wide by 2.5 metres deep. If the pool is completely filled with water, calculate a) the volume of water in the pool b) the longest straight distance a swimmer could swim in the pool c0 the ...

*April 28, 2014*

**math**

Thank you so much, a) 25.1 cm^3 b) 6.28 cm ^2 c)144-75.36 =68.64 Is it correct? Thank you so much

*April 28, 2014*

**math**

A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...

*April 28, 2014*

**Math**

A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...

*April 27, 2014*

**math**

Thank you so much:)))

*April 9, 2014*

**math**

10t-640/t^2 = 0 Thank you so much for huge help:)))

*April 9, 2014*

**Math**

46354 miles might be the answer. I didn't say that it's right.

*March 26, 2014*

**LECTRICAL ENGINEERING**

WHAT IS THE FORMULAR FOR CALCULATING THERMAL ENERGY WHEN GIVEN CURRENT,VOLTAGE,TIME,TEMPERATURE

*March 6, 2014*

**math**

100=1.5((1.1^(n) - 1))/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5((1.1^(n) - 1))/1.1-1 10 = 1.5(1.1^(n) - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 ...

*February 23, 2014*

**math**

100=1.5(1.1^n - 1)/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5(1.1^n - 1)/1.1-1 10 = 1.5(1.1^n - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 Thank you so...

*February 23, 2014*

**math**

On the first day he runs 1.5 km. Every day he runs 10% more than the day befor. a) Write down the distance he runs on the second day of training. ..... 1,5km +0,15 = 1,65 km b) Calculate the total distance He runs in the first seven days of training. When I counted my answer ...

*February 22, 2014*

**life orientation**

what is life orientation?

*January 27, 2014*

**math**

U is the set of positive integers less than or equal to 30. A is the set of natural numbers that are multiples of 5 in U. B is the subset of all of the even integers in U. a) Find n(A U B) b) Find n(A intersect B) c) Find n(A U B' ) d Find n(B intersect A') Thank you ...

*January 25, 2014*

**math**

U is the set of positive integers less than or equal to 30. A is the set of natural numbers that are multiples of 5 in U. B is the subset of all of the even integers in U. a) Find n(A U B) b) Find n(A intersect B) c) Find n(A U B' ) d Find n(B intersect A') Thank you ...

*January 24, 2014*

**Math**

A is the set of all multiples of 4 that are less than or equal to 20. B is the set of all of factors of 24. Find A U B. Thank you so much for huge help:)))

*January 24, 2014*

**Math**

In a group of 105 students, 70 students passed Mathematics, 60 students passed History and 45 students passed Geography; 30 students passed Mathematics and History, 35 students passed History and Geography, 25 passed Mathematics and Geography, and 15 passed all three subjects...

*January 24, 2014*

**math**

In a group of 105 students, 70 students passed Mathematics, 60 students passed History and 45 students passed Geography; 30 students passed Mathematics and History, 35 students passed History and Geography, 25 passed Mathematics and Geography, and 15 passed all three subjects...

*January 23, 2014*

**Physics**

A bullet whose mass is 0.0015kg leaves a 5kg leaves a 5kg rifle at a muzzle velocity of 800 m/s. It strikes a 7kg block of wood and becomes embedded in it. After the bullet hits the rock, what is the speed of the bullet/ block system?

*January 15, 2014*

**math**

The graph of the function f(x)=2^x/a passes through the points (0,b) and (2,0.8). Calculate the values of a and b. Thank you so much for huge help:)))

*November 10, 2013*

**math**

A rocket follows a parabolic trajectory. After t seconds, the vertical height of the rocket above the ground, in metres, is given by H(t) = 37t – t . Find the length of time the rocket is in the air. Could you please explain me, why answer is 37s? Thank you so, so much:))

*October 24, 2013*

**math**

A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit. Answer: 13531.25 riyals b) the loss for week's holiday period, where no units are sold .Answer:3000 ...

*October 24, 2013*

**math**

A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit. Answer: 13531.25 riyals b) the loss for week's holiday period, where no units are sold .Answer:3000 ...

*October 23, 2013*

**math**

A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit b) the loss for week's holiday period, where no units are sold c) the number of units sold each at ...

*October 22, 2013*

**math**

A farmer has 110 metres of fencing to fence off a rectangular area. Part of one side is a wall of length 15m. Find the dimensions of the ﬁeld that give the maximum area. Answers: length and width = 31,25m Thank you so much for a huge help.

*October 22, 2013*

**math**

A farmer has 110 metres of fencing to fence off a rectangular area. Part of one side is a wall of length 15m. Find the dimensions of the ﬁeld that give the maximum area. Thank you so much for a huge help.

*October 22, 2013*

**physics**

football is kicked off with an initial speed of 66 ft/s at a projection angle of 45 degrees. A receiver on the goal line 63 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in feet/second) if he is to catch ...

*September 30, 2013*

**physics**

Suppose that it takes exactly 17.0 hr to drain a container of 6.20 liters of water. What is the average mass flow rate (in kilograms/second) of water from the container? Assume that the density (mass/volume) of water is exactly 1 g/cm^3.

*September 9, 2013*

**math**

550 GBP x 1.18 Euro = 649 Euro 649 - 629 = 20 Euro 1GBP x 20 Euro / 1.18 Euro = 16.94 Euro

*September 8, 2013*

**math**

Minni travels to Italy. She changes 550 GBP to euros at an exchange rate of 1 GBP = 1.18 euros. The bank charges commission and then gives Minni 629 euros. Find the amout of the commission in GBP. Thank you so much:))

*September 8, 2013*

**Math, HELP!! URGENT!**

Please Simplify: (1/8)(40v−24y)−(1/7)(21v−35y+9)−(1/6) (1/11)(55x−22)−(1/2)(18x−2v)

*August 29, 2013*