student #1

Popular questions and responses by student #1
  1. Math

    A pizza shop is considering increasing the diameter of its family pizza tray from 32 cm to 34 cm. Find the percentage increase in area, correct to two decimal places, from the 32 cm tray to the 34 cm tray.

    asked on September 7, 2019
  2. Math

    A photo 12 cm wide and 20 cm long is surrounded with a picture frame 3 cm wide. Find the outside perimeter of the framed picture.

    asked on September 3, 2019
  3. Algebra

    Carrie has 27 coins in her purse. All the coins are 5 cent or 20 cent coins. If the total value of the coins is $3.75, how many of each type does she have?

    asked on August 17, 2019
  4. Algebra

    Solve these simultaneous equations by eliminating: 1) 7x - y = 9 2x + 3y = 19 2) x - 3y = 0 3x + y = 30 3) 7x - y = 19 2x + 3y = 12

    asked on August 22, 2019
  5. Algebra

    Expand and collect like terms: 5 + (3x - 4)

    asked on July 23, 2019
  6. Math

    A lion enclosure is made up of five straight fence sections. Three sections are 20 m in length and the other two sections are 15.5 and 32.5 m. Find the perimeter of the enclosure.

    asked on September 3, 2019
  7. math

    How much air space is contained inside a rectangular cardboard box that has the dimensions 85 cm by 62 cm by 36 cm. Answer using cubic metres (m^3), correct to two decimal places.

    asked on September 18, 2019
  8. Algebra

    Malcolm’s mother is 27 years older than he is and their ages are both two digit numbers. If Malcolm swaps the digits in his age he gets his mother’s age. a) How old is Malcolm if the sum o the digits in his age is 5? b) What is the relationship between

    asked on August 18, 2019
  9. Algebra

    Jill pays tax at 20c in the dollar for every dollar earned over $10 000. If Jill earns $x and x > 10 000, write an expression for Jill's tax in expanded form.

    asked on July 23, 2019
  10. Math

    Six square windows of side length 2 m are to be placed into 12 m wide by 8.5 m high wall as shown. The windows are to be positioned so that the vertical spacing between the windows and the wall edges are equal. Similarly, the horizontal spacings are also

    asked on September 8, 2019
  11. Algebra

    Wilfred and Wendy have a long distance bike race. Wilfred rides at 20km/h and has a 2 hour head start. Wendy travels at 28 km’h. How long does it take for Wendy to catch up to Wilfred? To work this problem out, use algebraic form.

    asked on August 18, 2019
  12. Algebra

    Mal bought 3 bottles of milk and 4 bags of chips for a total of $17. At the same shop, Barbara bought 1 bottle of milk and 5 bags of chips for $13. Find how much each bottle of milk and each bag of chips cost by completing the following steps: a) Define

    asked on August 17, 2019
  13. Algebra

    Use substitution to solve each of the following pairs of simultaneous equations for x and y in terms of a and b: a) ax + y = b y = bx b) ax + by = b x = by

    asked on August 13, 2019
  14. Math

    I know this isn't an ACTUAL learning question but this is urgent for I have an upcoming test... how do you establish the formulas for areas of rectangles, triangles and parallelograms, and use these in problem-solving?

    asked on October 5, 2019
  15. Math

    what is the formula to calculate two cylinders, one of them inside the big cylinder?

    asked on September 30, 2019
  16. Math

    Two wooden boxes, both with dimensions 8080 cm, 11 m and 25 cm, are placed on the ground, one on top of the other as shown. The entire outside surface is then painted. Find the area of the painted surface.

    asked on September 16, 2019
  17. Math

    A pool is surrounded by paving blocks which are 1 metre square. There are 16 blocks are used to surround the pool. a) What is the perimeter of the pool? b) What are the area of the various pools which could be surrounded by these 16 blocks?

    asked on September 3, 2019
  18. Math

    The Play Park runs between Happy Street and Sad Street. Some drivers are using the park as a short cut. A fencing contractor has been asked to put chains across both ends of the park to stop the cars driving through, but he has not been told how wide the

    asked on September 2, 2019
  19. Math

    The length of the paving block will determine the perimeter. While there could be a number of different rectangles formed using the same number of blocks the perimeters will not vary; only the area inside the path could vary. Complete the following table.

    asked on September 2, 2019
  20. Math

    Peter kept his pony in a rectangular paddock the perimeter of which was 240 metres and the area was 3200 square metres. What were the dimensions of the paddock?

    asked on September 2, 2019
  21. Math

    A builder is to build a staircase up to a landing which is 3 metres from the floor level. Each step rises 20 cm, and the horizontal part of the step goes 25 cm. a) How many steps will he need to build? b) How far from the wall will he need to move to be

    asked on September 2, 2019
  22. Math

    The area around the rectangular pool is to be paved for a distance of three metres out from the edge of the pool. Each paving block is a square with sides of 0.5 metres. How many blocks needed? In my hw book, the diagram has a rectangle, and the width is

    asked on August 31, 2019
  23. Math

    Major car park has y levels. Each level has n rows and each row has n spaces. The charge for each space is $x per day. The maximum total revenue for each day is therefore...

    asked on August 30, 2019
  24. Math

    A memorial lawn at the crematorium is square and has an area of 81 square metres. The path around the lawn is 1 metre wide. What is the area of the concrete path which surrounds the lawn?

    asked on August 30, 2019
  25. Math

    What conclusion are you able to draw about the relationship between perimeter of rectangles and the area, which they enclose?

    asked on August 29, 2019
  26. Math

    Farmer Giles has 36 sections of portable fence which are used to make pens for the sheep. Each of these sections is 1 metre long. Each night he arranges the sections into a rectangle. Sometimes he makes it long and narrow and sometimes he makes it more

    asked on August 29, 2019
  27. algebra

    When new, a factory cost $c, but it loses value at the rate of $p a year. Find its value, $V, after n years.

    asked on August 24, 2019
  28. Algebra

    Five times a certain number exceeds 19 by 6. How do I solve this in algebraic form?

    asked on August 23, 2019
  29. Algebra

    yy + 12 = 28

    asked on August 23, 2019
  30. Algebra

    I think of two numbers, which I represent by x and y. If I add three times to y to three times x, the result is 7 1/2, while if I subtract three times y from three times x the result is 22 1/2. What numbers do x and y represent? 3x + 3y = 7 1/2 - Equation

    asked on August 23, 2019
  31. Algebra

    I think of two numbers. If I double the first and add three times the second, the result is zero. If I subtract three times the second from twice the first, the result is -12. Find the two numbers.

    asked on August 23, 2019
  32. Algebra

    Solve this simultaneous equations by substitution: 1) a = 4b + 1 a = 3b - 1

    asked on August 22, 2019
  33. Algebra

    Solve each of the following equations by first expanding the brackets. a) 4(5 - b) = 18 b) 2(1 - m) = 13 c) 5(3 - x) = 19

    asked on July 28, 2019
  34. Algebra

    subtract x from both sides: 3x + 1 = x - 6 subtract 2x from both sides: 4x - 3 = 2x + 1

    asked on July 28, 2019
  35. Algebra

    A rectangle's length is 4 more than its width, x. Find an expanded expression for its area.

    asked on July 23, 2019
  36. ALGEBRA

    When expanded form, what should -2(x + 3) equal?

    asked on July 22, 2019
  37. Algebra

    6xy + xy + 4y My answer is 6xy + 4y Is that correct?

    asked on July 21, 2019
  38. Algebra

    The sum of half of the square of n and half of n. Write the expression for this description. This is MY answer: (1/n)^2 + 1/n Is this correct?

    asked on July 21, 2019
  39. math

    Farah made a drink for a party by mixing syrup and water in the ratio 1 : 8. If she made 4.5L of drink, how much syrup did she use?

    asked on July 10, 2019
  40. math

    The ratio of the volume of water in cups A and B is 10 : 7. Express the volume in Cup B as a fraction of the total volume of water in both cups.

    asked on July 10, 2019
  41. math

    Hannah is (3/7) as heavy as Irna and (3/4) as heavy as Jiahui. What is the ratio of Hannah's mass to the total mass of the 3 girls?

    asked on July 10, 2019
  42. Math

    A class has 42 pupils. The ratio of the number of boys to the number of girls is 5 : 2. Find the number of boys in the class. My understanding is that in order to find the number of boys, you need to find BOTH genders first, and so I could only get up to

    asked on July 9, 2019
  43. Math

    A bag of durian is (9/5) as heavy as a bag of rambutans. Express the ratio of the mass of rambutans to the mass of durians. The part that I don't understand in this question is: all the question gives out is the fraction amount. That's the only information

    asked on July 9, 2019
  44. Math

    Alvin, Brian and Charlie shared some comics among themselves. Alvin received (2/5) of them while Brian received (5/6) of what he and Charlie received altogether. If Alvin received 180 more comics than Charlie, how many comics did Brian receive?

    asked on July 4, 2019
  45. Math

    Joel bought a bag with (2/9) of his money and a pair of shoes which cost $40 more than the bag. He had (1/3) of his money left. a) How much did the bag cost? b) how much did he have at first?

    asked on July 4, 2019
  1. Math

    yes I have the diagram in my hw book I'm just not sure how to find the perimeter and area the diagram has 4 blocks on each side... so 4 blocks on the top, 4 blocks on both sides, and 4 blocks on the bottom

    posted on September 3, 2019
  2. Math

    wait.. where did 120metres come from? sorry my head is a bit muddle up today... I would've been able to solve it

    posted on September 2, 2019
  3. Math

    The factors of 32 are 8 and 4, since they add up to 12 anyways.. And so... the factors for 3200 are both 100 and 20 AND 40 and 80

    posted on September 2, 2019
  4. Math

    add the extra 75cm for the top landing (25cm included by thinking of it as a step) what does that mean?

    posted on September 2, 2019
  5. Math

    I just understood that a day ago... thanks to the example you gave me

    posted on August 31, 2019
  6. Math

    what original problem?

    posted on August 31, 2019
  7. Math

    So basically... there are different ways to answer this problem? Like... it's an open-ended question?

    posted on August 30, 2019
  8. Math

    9m isn't a variable. It represents "metres" not some variable.

    posted on August 30, 2019
  9. Math

    For the 9m... is it 9m^2? or just leave it like that?

    posted on August 30, 2019
  10. Math

    nevermind... solved it already

    posted on August 29, 2019
  11. Algebra

    Can you please put this in algebraic form? I don't understand how to put it into algebraic form.

    posted on August 17, 2019
  12. Algebra

    The working out has to be in algebraic form

    posted on August 17, 2019
  13. English

    Yes B should be correct because the question is asking WHAT'S the meaning of the speech

    posted on August 17, 2019
  14. English

    This sentence is correct, but you need to add 2 commas: "France, as well as Russia, produces oil."

    posted on July 18, 2019
  15. English

    B. The runaway truck which had been parked on a steep hill swerved and teetered before jumping a curb and slamming into a tree.

    posted on July 15, 2019
  16. chemistry IB

    blue-violet

    posted on July 10, 2019
  17. Math

    Ohhhh I get it So 5x = 5 x 6 = 30 (BOYS) And 2x = 2 x 6 = 12 (GIRLS) So the number of boys is 30 yes?

    posted on July 10, 2019
  18. english

    "Musa's arms SWUNG as he walked to school."

    posted on July 10, 2019
  19. Math

    Oh oops.. sorry.. wrong answer CORRECT ANSWER: -2048v^29

    posted on July 10, 2019
  20. Math

    So basically the number of boys is 6? And so is girls??

    posted on July 10, 2019
  21. Math

    -2^11v^29

    posted on July 10, 2019
  22. Science

    It is easier because the arch structure at either end of the egg is stronger than it's sides. Pressure is distributed up or down (but most commonly down) so that the arches has less pressure that can act on any one point

    posted on July 10, 2019
  23. Math

    Yes, I believe that works... for you... but I still don't understand the concept Please help... thank you very much

    posted on July 10, 2019
  24. Math

    5/6 - Brian (1 half from what BOTH Brian and Charlie received) 2/5 - Alvin Alvin got 180 MORE comics than Charlie To find Charlie's and Brian's amount of comics: 5/6 x 2 = 5/3 So BOTH Charlie's and Brian's amount of comics is 5/3 Alvin received 180 MORE

    posted on July 10, 2019
  25. Math

    Hi, sorry got your response late I didn't get pretty far. I didn't understand how to apply the same formula to this question

    posted on July 10, 2019