Real coefients
if a+bi is a root then a-bi is also a root
since 3-i is a root then 3+i s also a root
also the √7, so if √7 is a root then -√7 is also a root
so
f roots are r1 and r2 then the factored form is
f(x)=(x-r1)(x-r2)
roots are 3-i, 3+i and √7 and -√7
f(x)=(x-(3-i))(x-(3+i))(x-√7)(x-(-√7))
expanded
f(x)=x⁴-6x³+3x²+42x-70
The ratio of the triangle is 55/1.1, which is 50/1.
This means that the building is 50/1 = x/5
x = 250
The office building is 250 m tall.
A. 30% is the correct. .30 is 30%
9514 1404 393
Answer:
17 > x+1
Step-by-step explanation:
You can add or subtract any number from both sides to get an equality with the same meaning:
17 > x+1
0 > x-16
You can multiply or divide by any number (except division by 0) to get an equality with the same meaning. If the multiplier (or divisor) is negative, the comparison changes direction.
-16 < -x
48 > 3x
