Айару казак тілі ден 7ші тапсымадан 1 жұмбақты 2ші жұмбақты айтшы казак тілі ден 7ші тапсымадан 1 жұмбақты 2ші жұмбақты айтшы казак тілі ден 7ші тапсымадан 1 жұмбақты 2ші жұмбақты айтшы апай Саламатсызба апай Саламатсызба апай Саламатсызба апай Саламатсызба апай
5 см и 12 см
Объяснение:
пусть стороны прямоугольника равны х и у (х,у>0).
тогда по условию:
х² + у² = 13²,х*у = 60.Решаем:
х² + у²=169,
ху=60;
х² + у²=169,
у=60/х;
х²+(60/х)²=169, (1)
у=60/х;. (2)
1. х² + 3600/х² = 169 |*х²
х⁴ + 3600 = 169х²
х⁴ - 169х² + 3600 = 0
пусть х²=t≥0
тогда t² - 169t +3600 = 0
D = (-169)² - 4*1*3600 = 28561 - 14400 =
= 14161 = 119²
t1 = (-(-169)+119) / (2*1) = (169+119)/2 = 288/2 = 144
t2 = (-(-169)-119) / (2*1) = (169-119)/2 = 50/2 = 25
выход из замены:
t=x², x>0
t1 = 144 = x², x1=√144 = 12,
t2 = 25 = x², x2=√25 = 5;
2. y=60/x
y1 = 60/x1 = 60/12=5
5y2 = 60/x2 = 60/5=12
То есть стороны прямоугольника: 5 и 12 см.
0 және не знаю как гOTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
Write the correct preposition, then complete the
sentences for you.
Write the correct preposition, then complete the
sentences for you.
Write the correct preposition, then complete the
sentences for you.
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
OTBET:
the afternoon, learn work
in lunchtime, I eat pizza and drink juice
in night, I watch TV or play mobile games
in weekend, I go to picnicin
Write the correct preposition, then complete the
sentences for you.
Write the correct preposition, then complete the
sentences for you.
Write the correct preposition, then complete the
sentences for you.
Write the correct preposition, then complete the
sentences for you.
Айару казак тілі ден 7ші тапсымадан 1 жұмбақты 2ші жұмбақты айтшы казак тілі ден 7ші тапсымадан 1 жұмбақты 2ші жұмбақты айтшы казак тілі ден 7ші тапсымадан 1 жұмбақты 2ші жұмбақты айтшы апай Саламатсызба апай Саламатсызба апай Саламатсызба апай Саламатсызба апай