(-2-2i)(-4+6i)
=8-12i+8i-12i^2
=8-4i-12i^2
=4(2-i-3i^2)
=4((i-1)(3i+2))
=4(i-1)(3i+2)
102 and 102
72 and 72
142 and 142
Answer:
.
Step-by-step explanation:
Given:
We need to find 
Solution:
First we will find the value of 
.
Now taking 
on both side we get;
Now we will find the 
.
= 
Now we will find we get;
Hence .
Answer:
x=1, -3
Step-by-step explanation:
The width of the cooling tower is 36 meters.
<h3>What is a cooling tower?</h3>
A cooling tower is a vent that is built for the purpose of releasing waste heat back to the atmosphere.
Now we can model the system using; x²/324 - (y² - 90)²/1600. Thus, the width can be obtained from;
2 × ✓324
= 2 × 18
= 36 meters
Learn more about cooling tower:brainly.com/question/26654522
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Missing parts;
Cooling towers are used to remove or expel heat from a process. A cooling tower's walls are modeled by x squared over 324 minus quantity y minus 90 end quantity squared over 1600 equals 1 comma where the measurements are in meters. What is the width of the cooling tower at the base of the structure? Round your answer to the nearest whole number.
36 meters
48 meters
80 meters
89 meters
