W pewnej klasie liczba chłopców stanowi 75% liczby dziewcząt. Chłopców w tej klasie jest o 4 mniej niż dziewcząt. Ile osób liczy ta klasa?

1. Wyznacz niewiadomą.
2. Ułóż równanie.
3. Rozwiąż równanie.
4. Wykonaj sprawdzenie.
5. Napisz odpowiedź.

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step-by-step explanation:

step-by-step explanation: the answer is 27. first multiply .32 by 25 which equals 8. then add 8 to 25 which gives you 33. then you subtract that from 6 since she gave 6 to her brother.

,, add !

the exponential expression to find the value of the cd, in dollars, after t years will be:  

step-by-step explanation:

formula of compound interest:   , where final value after years,   initial value, rate of interest in decimal and number of compounding in a year.

oliver plans to purchase a $1,500 certificate of deposit (cd) at his bank. that means,  

the cd will earn 2.3% interest, compounded semi-annually.

so,   and  

now, plugging these values into the above formula, we will

(rounded to the nearest ten-thousandth)

so, the exponential expression to find the value of the cd, in dollars, after t years will be: