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  1. K

    Financial Question

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    Geometry question, please help

    Please help
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    Please help

    1. What is the sum of the digits in 100 to the power 241? 2. What is the product of the digits in 100 to the power 241? 3. What is the largest two-digit number that is the sum of two different perfect squares?
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    Logic question

    In a certain game you double your score for a correct answer and halve it for an incorrect one. If after 3 questions Joanne has a score of 64, write down all the possible scores she could have had before these 3 questions were asked I have one set 8, 16, 32, what other possible scores could...
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    Factorial question

    Hi can you please help, 10! = 3! x 5! x 7! Can you express the following as products or two or more factorials? a) 10! (different to answer above) b) 48! c) 24!
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    Financial Questions help

    1) Sally makes a cordial drink so that 10% of the drink is cordial concentration.. The rest is water. Sally has 350ml of the drink in a jug. She decided that she wants the concentrate to be only 8% of the drink. How much extra water does she need to add to the jug? 2) A diary farmer found that...
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    Pythagoras Question Any hints will be great

    Please help
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    Measurement Question (Any hints would be great)

    Four balls each with radius of 10 cm are placed on a table so that each one contacts two others. A fifth ball of the same size is placed on top of them so that it contacts all four balls. Find the distance from the top of the fifth ball to the table, expressing the answer in exact form .
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    Is my working out/answer correct?

    Question: Find the surface area of the pyramid below correct to 1 decimal place. SA bottom = 18 x 15 = 270 m^2 SA front +back = (0.5 x 18 x root 156.25) x2 SA RHS +LHS = (0.5 x 15 x root 181) x2 Total SA = 698.6 m^2
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    No clue how to do this question

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    Can someone check where my mistakes are please? Measurement Questions

    Question 1 Find the surface area (to one decimal place) SA top = 1/2 x 9 x 12 = 54 cm^2 SA bottom = 1/2 x 9 x 12 = 54 cm^2 SA front = 1/2 x 12 x 5 = 30 cm^2 SA back = 1/2 x 15 x 5 = 37.5 cm^2 (used Pythagoras to get base of 15 cm) Total SA= 175.5 cm^2 The actual answer says it is...
  12. K

    Another SA of Pyramid Question, please can you check where my mistake/s are:

    SA front = 1/2 x 12 x 5 = 30 cm^2 SA bottom = 1/2 x 9 x 12 = 54 cm^2 SA back = 1/2 x 15 x 5 = 37.5 cm^2 used Pythagoras to get 15 cm SARHS = 1/2 x 9 x root 148.75 = 54.9 cm^2 used Pythagoras h^2 = 13^2 - 4.5^2, h = root 148.75 TOTAL SA = 176.4 cm^2...
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    Please can you look at my solutions and see where I am going wrong? Surface area of pyramids.

    SA bottom = 24 x 16 = 384 cm^2 SA front + back = 1/2 (16 x 29.7) x 2 Used Pythagoras h^2 = 32^2 - 12^2, therefore h = 29.7 = 475.2 cm ^2 SA RHS + LHS = 1/2 (24 x 31) x 2 Used Pythagoras (twice) Slant height of front triangle =...
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    Ratios Question please help

    An antiseptic solution is made by mixing phenol with water in the ratio 2: 25. This solution is then mixed with further water in the ratio of 3: 4. How much water would be contained in 1L of the final solution? (Answer to the nearest mL.)
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    Ratio and rates

    An antiseptic solution is made by mixing phenol with water in the ratio 2: 25. This solution is then mixed with further water in the ratio of 3: 4. How much water would be contained in 1L of the final solution? (Answer to the nearest mL.)
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    Year 9 Measurement Question

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    Year 10 Measurement Question

    Question 1 Question 2 Question 3
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