Mathematics, 14.07.2019 11:00 math9878
David needs a 50% solution of antifreeze and water in his radiator. the radiator currently has a 20% solution of antifreeze and water. if the radiator holds 16 quarts, how much of the 20% solution must be drained and replaced with pure antifreeze to create the desired solution?
Answers: 1
Mathematics, 21.06.2019 22:00
Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b
Answers: 1
Mathematics, 21.06.2019 22:30
The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.
Answers: 2
David needs a 50% solution of antifreeze and water in his radiator. the radiator currently has a 20%...
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