Answer:
16.9 m
Step-by-step explanation:
Start with a half a circle. The central angle of a semicircle is 180 deg.
Now subtract 21 deg on each side.
180 - 21 - 21 = 138
The central angle is 138 deg.
The radius is 7 m.
Now we use the formula for the length of an arc of a circle given the radius of the circle and the central angle of the arc.



Answer:
There will be 4 blue marbles
Step-by-step explanation:
Yellow to blue marbles is in a ratio of:
5:10
the representative sample is:
2:x
simplee cross multiplication can be aplied
5x = 2*10
5x = 20
divide both sides by 5
x = 4
there should be four blue marbles
Answer:
Y
Step-by-step explanation:
The y-axis is the the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
5x - 5 = x + 11
5x = x + 16
4x = 16
x = 4
Answer:
b (2,2)
Step-by-step explanation: