Mathematics, 15.12.2020 14:00 zaikam81
Two customers went to the post office to buy postcards and large envelopes. Each postcard costs the same amount and each large envelope costs the same amount.
● The first customer paid $12 for 14 postcards and 5 large envelopes.
● The second customer paid $24.80 for 10 postcards and 15 large envelopes.
What was the cost in dollars of each large envelope?
1. $1.42
2. $1.15
3. $0.63
Answers: 3
Mathematics, 21.06.2019 16:00
5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000
Answers: 2
Mathematics, 21.06.2019 17:20
Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?
Answers: 3
Mathematics, 21.06.2019 17:20
Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?
Answers: 2
Mathematics, 21.06.2019 19:30
Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.
Answers: 1
Two customers went to the post office to buy postcards and large envelopes. Each postcard costs the...
Mathematics, 02.04.2021 01:00
Mathematics, 02.04.2021 01:00
Mathematics, 02.04.2021 01:00
Mathematics, 02.04.2021 01:00
Mathematics, 02.04.2021 01:00
Mathematics, 02.04.2021 01:00
History, 02.04.2021 01:00
Biology, 02.04.2021 01:00
Mathematics, 02.04.2021 01:00
Geography, 02.04.2021 01:00