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Posted by on Wednesday, June 9, 2010 at 7:46pm.

how do you solve this
plz show me how you do this

1. on her last three quizzes, jane scored 84, 96, and 88. what grade must she get on her next quiz to have an average of 90 for all four quizzes?



2. a square and a equilateral triangle have the same perimeter. what is the perimeter of each shape?

sqaure P = X

equilateral triangle P = x + 2

THANK YOU!!

  • MATH! - , Wednesday, June 9, 2010 at 7:57pm

    1. (84 + 96 + 88 + x)/4 = 90
    Solve for x.

    2. Read the question again. They already told you the perimeters are the same.

    You cannot say what the perimeter is with the information you have provided. All you know is that they are equal.

  • MATH! - , Wednesday, June 9, 2010 at 8:01pm

    how do you do # 1

  • MATH! - , Wednesday, June 9, 2010 at 8:02pm

    the question for # 2 is FIND the perimeter of each shape

  • MATH! - , Wednesday, June 9, 2010 at 8:04pm

    Solve the equation I wrote for you.
    The next step would be to rewrite it as
    268 + x = 4*90 = 360

    Then subtract 268 from sides.

  • MATH! - , Wednesday, June 9, 2010 at 8:11pm

    how do you do number 2 the question is FIND the perimeter of each shape

  • MATH! - , Wednesday, June 9, 2010 at 11:13pm

    EVERYONES COOL!!!!!!!!!!!

  • MATH! - , Wednesday, June 9, 2010 at 11:14pm

    EVERYONES A CRITIC

  • ALGEBRA - , Wednesday, June 9, 2010 at 11:17pm

    IS LETTER x NUMBER it IS SOOOOO!!! EASY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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