The first answer
-40y3/x5
Set up a ratio of the height and distances:
Let X equal the height of the tower.
1.92 / 0.4 = X / 87.6
Cross multiply:
(1.92 * 87.6) = 0.4x
Simplify:
168.192 = 0.4x
Divide both sides by 0.4:
x = 168.192 / 0.4
x = 420.48 meters tall.
Round answer as needed.
Answer:
19
Step-by-step explanation:
Julia + 3 + 12 - 5 + 8 = 19
Answer:
b) 1
Step-by-step explanation:
First, bring the -3 to the right side.
x²+4x + 4
now use b²-4ac.
4²-4(1)(4)
16-16
0
If discriminant < 0 there are 2 imaginary solutions
if discriminant > 0 there are 2 real solutions
if discriminant = 0 there is 1 real solution
The discriminant here is 0 so it has one real solution