Since there are two cards that have at least one green side, the chance of the other side being green is 1/2.
Result, Rachel can be certain that the temperature is suitable for her cake.
Answer:
164
Step-by-step explanation:
2x+7+5x+12=180
7x+19=180
7x+180-19
7x=171
---- ----
7 7
x=164
175 red squares out of 1000 squares = 175/1000 = 0.175 of the design is red.