No cause if I helmet cost $42 , 7 helmets will be $294.
$42 = 1 helmet
$? = 7 helmets
cross multiply = 42 × 7 = $294
Answer:
33.333...(%)
Step-by-step explanation:
4 divided by 12 gives you 0.333... (3 repeating)
If it's mutiple choice can I see the options :) would make this easier
The graph is a circle, centered at the origin, with radius=4.
We know that we can write the equation of a circle with radius r and center (a,b) as :
![(x-a)^2+(y-b)^2=r^2](https://tex.z-dn.net/?f=%28x-a%29%5E2%2B%28y-b%29%5E2%3Dr%5E2)
.
Thus, substituting (a, b) with (0, 0) and r with 4, we have:
![x^2+y^2=16](https://tex.z-dn.net/?f=x%5E2%2By%5E2%3D16)
.
The solutions of this equation are all the points forming the circle shown in the picture. The solutions of this equation are still the same even if we multiply both sides of the equation by 2, because rewriting the equation as:
![x^2+y^2=16\\\\x^2+y^2-16=0\\\\2(x^2+y^2-16)=0](https://tex.z-dn.net/?f=x%5E2%2By%5E2%3D16%5C%5C%5C%5Cx%5E2%2By%5E2-16%3D0%5C%5C%5C%5C2%28x%5E2%2By%5E2-16%29%3D0)
,
we would still have the same roots.
Thus, the equation of the circle can be written as :
![2x^2+2y^2=32](https://tex.z-dn.net/?f=2x%5E2%2B2y%5E2%3D32)
.
Answer: B
Some examples of geometric constraints include parallelism, perpendicularity, concentricity and symmetry. Parallelism occurs when two or more lines or axes of curves are equidistant from each other. Perpendicularity is a constraint in which lines or axes of curves intersect at right angles.