Complete the square for x and y.
(x² +42x +21²) + (y² +38y +19²) = 47 + 21² + 19²
The equation of this circle in standard form is (x +21)² + (y +19)² = 849The center of the circle is at the point (-21, -19)Its radius is √849
The general form of a circle centered at the origin with the same radius is
x² + y² - 849 = 0
Don’t really know if you still need help
70*300
=70(100+100+100)
=7,000+7,000+7,000
=21,000
ANSWER:
you multiply the meters by 100 to get to centimetres
you divide the centimetres by 100 to get to metres
REASONING:
100 centimetres= 1 metre
Complete Question
The relationship between altitude and the boiling point is linear. At an altitude of 8300ft, the liquid boils at 194.23 ° F
At an altitude of 4200 ft , the liquid boils at 202.02° F.
Write an equation giving the boiling point b of the liquid, in terms of altitude a in feet . feet . What is the boiling point of the liquid at 2600ft
Answer:
The equation is 
At 2600ft the temperature is 
Step-by-step explanation:
From the question we are told that
The temperature at 8300ft is 194.23 ° F
The temperature at 4200 ft is 202.02° F
Generally the slope for this relationship is mathematically represented as
=> 
Generally the according to the point slope formula is
=> 
=> 
=>
Now we are given from the question that x = 2600 ft
Then
=>
