math
The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a gallon of gas costs less than $3.00 is 15%?
math statistic
The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.
Chemistry
5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value correct? Explain why or why not.
Chemistry
5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value correct? Explain why or why not.
Chemistry
What is the symbol for the element whose electron configuration ends with 4p6?
Chemistry
How many total atoms of all elements are present in an acetate ion?
Chemistry
What is the term given to different forms of any element that only vary in their number of neutrons?
Chemistry
What is the term given to different forms of any element that only vary in their number of neutrons?
chemistry
How many moles of sodium are equal to 5.72 x 1025 atoms?
physics
the mass of the boy is 70kg. calculate the force in newtons acting on the boy due to his deceleration. how do i work this out
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