Answer:
<h3> (x-8)²+(y-3)² = 81</h3>
Step-by-step explanation:
The general equation of a circle is expressed as;
(x-a)²+(y-b)² = r² where;
(a, b) is the centre of the circle
r is the radius
Given the centre (8, 3) and the radius of 9, the equation of the circle will be;
(x-a)²+(y-b)² = r²
(x-8)²+(y-3)² = 9²
(x-8)²+(y-3)² = 81
hence the required equation is (x-8)²+(y-3)² = 81
Answer:
Step-by-step explanation:
Let the quadratic function be
The given points must satisfy this function;
Substitute 
.
Substitute (0,-2)
Substitute (1,-4);
Put equation (2) into equation (1)
Put equation (2) into equation (3)
Add equation (4) and (5)
Divide both sides by 3
Put a=3 in equation 5.
The quadratic function is;
Answer:
Surface area = 969mm squared
Step-by-step explanation
Front: 170mm
Back: 170mm
Right side: 170mm
Left side: 170 mm
Bottom: 289mm
Total: 969mm
Hope this helps!
Area = Length x Width
so, 88 = (something) x 8
Can you work out the something using mental math?
