zadanie w załaczniku, błagam pomuszcie!
zadanie 1
x-czas podany w sekundach
720= 5x + 4x720 = 9x / :9x = 80
80s czyli 1minuta 20sekund
sprawdzamy w taki sposób:
80 * 5 = 40080 * 4 = 320400+320=720 m.
zadanie 2
60m * 50m = 3000m²0,6=60%
60% * 3000m² = 60/100 *3000= 6 * 300 = 1800 m²3000 - 1800 = 1200 m² = 12a
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
zadanie 1
x-czas podany w sekundach
720= 5x + 4x
720 = 9x / :9
x = 80
80s czyli 1minuta 20sekund
sprawdzamy w taki sposób:
80 * 5 = 400
80 * 4 = 320
400+320=720 m.
zadanie 2
60m * 50m = 3000m²
0,6=60%
60% * 3000m² = 60/100 *3000= 6 * 300 = 1800 m²
3000 - 1800 = 1200 m² = 12a