math

manfred mouse fell inside a box of toy blocks. to escape, he needs to build a stairway with the blocks. for manfred to escape, the stairway must be 8 blocks high. he starts with 8 blocks for the bottom step. for the next step, he lays 7 blocks atop the first set of blocks. if he continues this pattern how many blocks will he need in all to build the staiway?

asked by Cortez
  1. Wont the average be(8-1)*8/2=28 blocks.

    Count them to check.

    posted by bobpursley
  2. 6+5+4+3+2+1=21 blocks

    posted by Emily

Respond to this Question

First Name

Your Response

Similar Questions

  1. English

    1. There is a toy near the box. 2. There is a toy by the box. 3. There is a toy beside the box. 4. There is a toy next to the box. 5. There is a toy at the box. [Are they all the same in meaning? Can we use #5? Is #5 the same as
  2. math

    A maker of cubic number blocks packs a rectangular box so that there are 11 blocks along one edge, 8 blocks along the second edge and 2 blocks along the third edge. How many blocks will be shipped in this box. If each block has a
  3. Math

    Finneas plays with his toy mouse for 1/10 hour. then he chases a fly for 1/6 hour. How much longer does he spend chasing a fly than playing with his toy mouse?
  4. math

    Mighty Mouse (who flies at a constant speed of 600mph) was standing by a cannon that was pointed straight up. A cannonball was shot vertically into the air with an initial velocity of 300 mph. Exactly one second after the cannon
  5. Math

    Mighty Mouse (who flies at a constant speed of 1400 ft/sec) was standing next to a cannon that was pointed straight up. A cannonball was shot vertically into the air with an initial velocity of 880 ft/sec. Exactly one second after
  6. Math

    Kimmy's toy box is 3 feet tall, 6 feet long and the width is half of what it is tall. How many cubic feet of space are inside Kimmy's toy box?
  7. algebra2

    you are creating a window display at a toy store using wooden blocks. the display involves stacking blocks in triangular forms. you begin to display with 1 block, which is your first "triangle," and then stack three blocks, two on
  8. Math

    A maker of a cubic number blocks packs a rectangular box so that there are 8 blocks along one edge, 10 blocks along the second edge, and 4 blocks along the third edge. How many blocks will be shipped in this box
  9. Guidance and Discipline

    In Ms.Edwards' two-year-old room,Brenden is working hard to build a block tower. The tower falls each time Brenden tries to stack the third block onto the second block. After three tries, Brenden throws the blocks wildly and
  10. Math

    I think this is geometry: There is a small box with a black frame around it. Inside the box, at the bottom, is an 8. Inside the box, to the right, is a 2. It looks like they are showing Length & Height. On the outside of the box,

More Similar Questions