Can someone please answer this question correctly please show work and please answer it correctly please I need it help me please

3. C.

6. A.

7. B. 7.8 hours

8. B. 44

Step-by-step explanation:

3. A. In order of 1st q., median, 3rd q.:

1.5, 3, 7.5

B. 2, 4, 6

C. 2, 4, 7

D. 2.5, 4, 6.5

6. A. Only asking students that are eating pizza is biased.

B-D. These are all random.

7. Add and divide all numbers.

5 + 6 + 7(5) + 8(9) + 9(2) + 10(2) = 156.

156 ÷ 20 = 7.8

8. Add and divide all numbers.

20 + 25 + 35 + 45(3) + 50(2) + 60(2) = 435.

435 ÷ 10 = 43.5

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

angle addition postulate

2x=56

step-by-step explanation: