Mathematics, 30.01.2020 23:53 morgantisch25
Krista was assigned a homework problem that stated there were 45 stamps purchased for $18.75. some stamps were 40 cents, and some stamps were 55 cents. to solve this problem, she wrote the system of equations that is shown below.
mc023-1.jpg
which explains the error that krista made?
krista put 0.40 in the first equation meant for the number of stamps.
krista put 0.55 in the second equation meant for the value of stamps.
krista did not use the correct decimal to represent the total cost of the stamps.
krista mistakenly put 45 in the first equation when it should have been in the second equation.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 14:00, lovelysoul4698
You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣
Answers: 2
You know the right answer?
Krista was assigned a homework problem that stated there were 45 stamps purchased for $18.75. some s...
Questions in other subjects:
Business, 20.02.2020 00:54
Mathematics, 20.02.2020 00:54
Mathematics, 20.02.2020 00:55
