Арифметическая и геометрическая прогрессия

Quiz
•
Mathematics
•
9th Grade
•
Hard
Юлия Безрукова
Used 22+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найдите восьмой член арифметической прогрессии, если a1 = 2/3, d = -1/3
3
-3
-2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найдите девятый член арифметической прогрессии, если a1 = -1/4, d = 3/4
7
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найдите разность арифметической прогрессии, если a1 = 21, a8 = 49
4
10
-4
3,5
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найдите разность арифметической прогрессии, если a1 = -18, a10 = 18
0
4
-4
3,6
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найдите первый член арифметической прогрессии, если a18 = -9,6; d = 0,8
4
-23,2
-24
4,8
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Арифметическая прогрессия задана формулой n-го члена an = -0,5n + 5. Найдите a14 - a5
0,5
-9,5
-4,5
-2,7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3
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