The Answer: 7.25/25
Hope this helps!
If -2i is a root, then 2i is also a root. If √10 is a root, then -√10 is also a root. Convert all four of these roots into factors using the factor theorem (which says that if R is a root, then (x - R) is a factor).
(x + 2i) (x - 2i) (x - √10) (x + √10)
Multiply these factors together. (It's easiest to multiply the conjugate pairs together first.):
x^4 - 6x^2 - 40
Answer:
7.He borrowed $1853.33
8.She received $28990.936
Step-by-step explanation:
7.Let x be the amount borrowed by Tyson
Rate of interest = 7.5%
Time = 2.5 years
Simple Interest = 347.50
Formula : 
Where SI = simple interest
P = Principal
T = Time
R = Rate of interest
Substitute the values in the formula :

Hence he borrowed $1853.33
8) Principal = 20000
Rate of interest = 9.5%
No. of compounds per year = 2
Time = 4 years
Formula : 
Where A= amount
r = Rate of interest
n = no. of compounds
t = time
Substitute the values in the formula :
So, 
A=28990.936
Hence she received $28990.936
Answer:
5
Step-by-step explanation:
-75 divided (-15) = 5
15x30= 450 sq ft
450/2.25= 200
so 200 people can fit in an area of 15x30