Mathematics, 06.10.2019 17:00 76KamLan
Maria and edwin have $23.00 each to spend at a book fair, where all students receive a 25% discount. they both want to purchase a copy of the same book, which normally sells for $26.50 plus 10% sales tax. to check if she has enough to purchase the book, maria takes 25% of $26.50 and subtracts that amount from the normal price. she takes 10% of the discounted selling price and adds it back to find the purchase amount. edwin takes 75% of the normal purchase price and then computes 110% of the reduced price. is maria correct? is edwin correct? do they have enough money to purchase the book? explain your answer using complete sentences and show your work plzz
Answers: 1
Mathematics, 21.06.2019 15:00
12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?
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Mathematics, 21.06.2019 20:30
Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.
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Mathematics, 21.06.2019 23:30
Solve the following: 12(x^2–x–1)+13(x^2–x–1)=25(x^2–x–1) 364x–64x=300x
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Mathematics, 22.06.2019 00:00
Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
Maria and edwin have $23.00 each to spend at a book fair, where all students receive a 25% discount....
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