write an inequality that represents each sentence.
1. Rachel's hair is at least as long as Julia's.
2. The wind speeds of tropical storms are at least 40 mi/h, but less than 74mi/h.

Question

write an inequality that represents each sentence.
1. Rachel's hair is at least as long as Julia's.
2. The wind speeds of tropical storms are at least 40 mi/h, but less than 74mi/h.

jim_thompson5910 · Answer

Let 

R = length of Rachel's hair 
J = length of Julia's hair

saying "Rachel's hair is at least as long as Julia's" means that


length of Rachel's hair >=  length of Julia's hair

R >=  J


keep in mind that the ">=" sign means "greater than or equal to"

jim_thompson5910 · Answer

for #2, if w is the unknown wind speed and if "The wind speeds of tropical storms are at least 40 mi/h, but less than 74mi/h", then we know that


w >= 40 and w <= 74

40 <= w  and w <= 74

40 <= w <= 74


basically this is saying that the wind speed w is between 40 and 74 mph

timaashorty · Answer

was about to help but Jim explained it better than I could've. (:

jim_thompson5910 · Answer

sorry about that timaashorty

jim_thompson5910 · Answer

I tend to jump the gun a lot

timaashorty · Answer

LOl it's okay ;p

jim_thompson5910 · Answer

alright then, I'm glad you like my explanations

awkwardpanda · Answer

thank you guys so much! You have no idea how much it means to me, I understand this a lot more.

jim_thompson5910 · Answer

you're welcome and I'm glad it's all making sense now