Answer:
4
Step-by-step explanation:
y-7=21
+7 +7
y=21+7
y=28
Answer:
4200
hope helpful <3 !!!!!!!!!!!!!
Answer: 45?
Step-by-step explanation: Sorry If I'm wrong, I haven't learned this yet but I tried my best.
The expected value of the inseam length of the jeans is found as
30% of 30+ 25% of 32+ 10% of 34+ 10% of 36 + 10% of 38 + 15% of 40
= 
= 
Hence, the third option 33.8 is the correct expected value.