Yes, -9 can be written as a fraction over 1, meaning it is a rational number

Answer:
7×6×5×4×3×2×1+5 can be written as 5*[7*6*5*4*3*2*+1] or 5*(1009). So, other than the number and 1, it has 5 and 1009 as its factors too. So it is a composite number.
Step-by-step explanation:
A composite number is a positive integer that has a factor other than 1 and itself.
Answer: if you're asking how to write it then it would be 7:21
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Here,BC=1/2FH
BC=8/2
BC=4
This is the required answer
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Answer:
4x^2 and 5x or 4 and 5, not sure how it goes, but it's for sure 4 and 5
Step-by-step explanation:
a factor is something which is multiplied by something else soooo I'd say it's 4x^2 and 5x because they are supposed to be multiplied by whatever x is