Answer:
Step-by-step explanation:
d^4-81
(d^2)^2-(9)^2
Using formula
(d^2+9)(d^2-9)
Answer:
b=8
Step-by-step explanation:
b/2+1=5
b/2=5-1
b/2=4
b=4×2
b=8
What u can do is turn the 10% into a decimal like .10 and then multiply it by 83 and then you would get 8.3 . I hope this was helpful
