Questions 1 to 5 carry 2 marks each. Show your working clearly and write your answers in the spaces provided. For questions which require units, give your answers in the units stated. Jun Yee spent $(9b+7)(9b + 7) on Saturday. He spent $bb more on Sunday than on Saturday. How much did he spend altogether on both days? Ans: $ ___

Letters represent numbers中文
Work through it with AI →

It won't just hand you the answer — it asks where you're stuck.How the checker works

Worked solution

1

1. Find the amount spent on Sunday

Amount spent on Sunday = (9b+7)+b=10b+7(9b + 7) + b = 10b + 7

2. Find the total amount spent on both days

Total amount = (9b+7)+(10b+7)=19b+14(9b + 7) + (10b + 7) = 19b + 14

Answer

19b+1419b + 14

AI analysis — may contain mistakes.

Worked this one out on paper? Snap your steps and Gigle's AI math checker will circle the step where it went wrong.

More questions on this topic

  1. 1Containers X and Y are rectangular containers. The base area of Container X is 30 cm^2 and the base area of Container Y…
  2. 2Andy had $5x. After buying apples at 60c each, he had $2x left. How many apples did Andy buy? Answer: ___
  3. 3n is a positive integer. Explain whether, for all n, (7n+2)2−(7n−1)2(7n+2)^{2}-(7n-1)^{2} is a multiple of 3. Answer ___
  4. 4A bag contains 4 black coins, 7 red coins and 11 white coins. Two coins are drawn from the bag at random, one after anot…
  5. 5给出下列判断：①单项式−12px2-\dfrac{1}{2}px^{2}的系数为−12-\dfrac{1}{2}；②整式x−2xy+1x-2xy+1是二次三项式；③多项式3x2y3−px5+12y3x^{2}y^{3}-px^{5}+\dfrac{1}{2}y的次数…