If CF = 5, CD = 12, and EF = 5, what is the perimeter of △CDE? Triangle C D E with segment D F drawn perpendicular to side C E creating two congruent segments C F and E F.
Group of answer choices

29

36

30

34

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

3/4 = c/36 i need with this fraction proble.

Which unit rate is the lowest price per ounce? (5 points) choice a: 6 ounces of chocolate chips for $2.49 choice b: 8 ounces of chocolate chips for $3.32