The swimming pool is open when the high temperature is higher than 2 0 ∘ c 20 ∘ c. lainey tried to swim on monday and thursday (which was 3 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 3 0 ∘ c 30 ∘ c on monday, but decreased at a constant rate in the next 3 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d d, from monday to thursday.

Step-by-step explanation:  

Let d represent the rate of temperature decrease in degrees Celsius per day from Monday to Thursday.  

As temperature decreased at a constant rate in the next 3 days, so the rate of temperature will decrease 3d degree Celsius in 3 days.  

We are told that the pool was open on Monday. The high temperature was on Monday. So the decrease in temperature from Monday to Thursday will be .

We have been given that the swimming pool is open when the high temperature is higher than .

As the pool was closed on Thursday. This means that temperature on Thursday was less than or equal to 20 degree Celsius. We can represent this information in an inequality as:

Therefore, the inequality can be used to determine the rate of temperature decrease in degrees Celsius per day, d, from Monday to Thursday.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

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