Asked by joy

1. you toss three coins. what is the probability P that all are heads?

2. write and simplify an expression for the perimeter of a triangle with these lengths: 1/2x, x, 5/4x

for number one, i think it might be 1/8
i'm not sure..

please help!!
Answered by bobpursley
yes on the first.

On the second, add the lengths. What is 5/4 + 2/4 + 4/4 ?
Answered by joy
2 3/4

so is this (5/4 + 2/4 + 4/4) the expression?

Answered by bobpursley
The expression is...

Perimeter=5/4 x + 1/2 x + x
simplifying, you get
Perimeter= 2 3/4 x
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