Answer:
C ≈ 11.71 cm
Step-by-step explanation:
using the ratio arc AC : circumference C = angle at centre of sector : 360°
=
, that is
=
( cross- multiply )
123 × C = 4 × 360 = 1440 ( divide both sides by 123 )
C =
≈ 11.71 cm ( to the nearest hundredth )
Answer:
10
Step-by-step explanation:
2000/ 2x = 10
Multiply each side by 2x
2000/ 2x = 10 *2x
2000 = 20x
Divide by 20
2000/20 = 20x/20
100 = x
Take the square root of each side
sqrt(100) = sqrt(x)
10 = sqrt(x)
Answer:
A
Step-by-step explanation:
The axis of symmetry for the figure is the y- axis
The y- axis has equation x = 0
S=k, a=4k-2
Annika rides her bike so she must travel some positive distance, ie a>0 so:
4k-2>0
4k>2
k>1/2 and that k is how far Sam rode, so Sam must ride his bike more than 1/2 kilometer.