The first option is your answer.
Sigma notation is just a fancy way to shorten a sum of a series of numbers using a set equation. The "n =" tells you where to start in the sequence and the top number tells you where to stop.
Answer:qjs
Step-by-step explanation:
A
X= -7 to 1
Y= -8 to 9
B
X= -40 to 20
Y= -30 to 10
Thee answer is 25. 25 is a square number as it is 5 times 5. The sum of the digits 2+5 is 7.
Answer:either c or b
Step-by-step explanation: to be honest I searched up
Step-by-step explanation:
- 7p-9= -22
- 8p=-22+9
- 8p= -13
- p=-13/7
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