The average speed of Dolly is 33.33kmph.
Average Speed:
The average speed is defined as the total distance travelled by the object in a particular interval of time. It can be calculated by dividing the total distance travelled by the total time taken.
So, Average Speed = total distance / total time
Here,
Let the total distance is 100 km.
Therefore, consider she will travel 60 km at speed of 60 kmph , 30 km at speed of 30 kmph and 10 km at speed of 10 kmph.
she will required times of 1 hour, 1hour and 1hour
So,
Average speed = 100 / (1 + 1 + 1)
=> 100 / 3 = 33.33
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<h3>
Answer: Choice D. 
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This is because we want to avoid having negative numbers under the square root. So we make the radicand to be 0 or larger.
The +1 at the end doesn't affect the domain.
A prime meridian is a meridian (a line of longitude) in a geographicalcoordinate system at which longitude is defined to be 0°. Together, a primemeridian and its antimeridian (the 180th meridian in a 360°-system) form a great circle.
<span>Answer:
1. AC = AC [Reflexive property]
2. <A = <C [Corresponding angles are congruent]
3. AD = BC [Parallelogram has two congruent opposite legs]
4. Both triangles are congruent by SAS</span>
12*12=144cm^2
I think that’s how it’s done, if not I’m really sorry