Answer:
x ∉ R
Step-by-step explanation:
x² = - 21
if x² < 0 => x ∉ R
D because there are 8 outcomes
Answer on the second photo with the numbers 3,4 and 5:
6 square
Step-by-step explanation:
3 times 4 : 2 =
12 : 2 =
12 : 2 = 6 square
6 more
What was the start and end weight
Did they start at the same time maybe