Answer:
D. x. x^7 . x^-4
Step-by-step explanation:
A. X^5 . X^-4 .X^2=X^(5-4+2)= X^3
B. X^-2 .X^9 .x^-4=X^(-2+9-4)= X^3
C.x^0 . x^10 . x^-7=X^(0+10-7)= X^3
D. x. x^7 . x^-4=X^(1+7-4)= X^4
I think this video will help you so much, it's about how to solve it from Khan Academy
https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-scientific-notation/v/scientific-notation-old
2.5 is in decimal form already.
Answer:
Step-by-step explanation:
<em>Hey there!</em>
Cross multiply the given info
60 = 8m
Divide both sides by 8
m = 7.5
<em>Hope this helps :)</em>
