Answer:
x=5
Step-by-step explanation:
write x - 4 as a fraction with denominator = 1
5/x = (x - 4)/1
Now cross multiply
x(x - 4) = 5 multiply out and collect all terms on the left side of the equal sign
x2 - 4x - 5 = 0 factor the quadratic into two binomials
(x - 5)(x + 1) = 0 the product of two numbers = 0 when either number is zero
Therefore x = 5 or x = -1
Answer and Step-by-step explanation:
1. square and 20 ft because each side is 5 ft and 5+5+5+5=20
2. triangle and 25 ft because 12+5+8=25 ft
3. trapezoid but Im not sure what the side lengths are for that one so i dont know what the perimeter is
4. Parallelagram and the same as what happened with number three
5. hexagon and 8+8+8+8+8+8= 48 ft
Answer:
Step-by-step explanation:
-0.8078217663
Answer:
Step-by-step explanation:
I assume you are talking about square roots when you say root...
Sqrt(-9) = 3i
Sqrt(-12) = 2Sqrt(3)i
Complex number is 3 + 2Sqrt(3) i
Answer:
Step-by-step explanation:
In order to convert kilometers to miles, we can use a formula, assuming 
is miles and 
is kilometers.
.
Since we know the kilometer reading (7), we can divide this by 1.609 to get our total miles.
Hope this helped!
