a random sample of the grade of 78 students is taken. what is the probability that the average grade will be between 80.3% and 82.3%?
Boric acid is a weak acid with an equilibruim constant(K)of 10-9.3. What is the pH balance of a 0.1 molar solution of boric acid?
The technical management team is ready to review your proposed design for BeT. The Banking e-Teller system allows bank customers to perform ATM transactions from their cell phone. This first generation system will allow customers to check balances, make remote capture deposits...
why is (NH4)2Cr2O7 >> N2 + Cr2O3 + 4 H2O balanced like this.
If you were going to solve 0.7 divided by 0.0035 what would you write down on paper step by step?
How long does it take a motor cyclist to come to rest?which travels at 12m/s decelerates at 3m/s^2
Q: Convert 4x^2 + 4y^2 -8x -16y -29 = 0 into standard form. I first started by pairing the like terms together, getting: 4x^2 -8x + 4y^2 -16y = 29 The next step, I'm a little confused. I know I need to complete the square, but I'm not sure how to fully factor out the a...
Working on my online math homework, I encountered this problem: Solve: (3x^-1 y^-2)^-2 (x^2 y^5)^-1 [[Spaces denote the end of the exponent.]] Because of the law of exponents that deals with negative exponents, I did the reciprocal and distributed the exponent, getting (1/3x^2...
how do you work find sin (a-B)beta sign. sin a = 12/13,a lies in quadrant II,and cos B = 15/17, B lies in quadrant I.
in a class of 40 student,18 pass maths, 19 pass account,16 pass economics 5 pass maths and account only, 6 pass maths only, if each student pass at least one of the subject.find the percentage number who fail in at least one of economics and maths. how many student fail in all...