Answer:
Prime numbers are whole numbers that has factors of 1 and itself.
Example: 2 is a prime because there is no way you could factor it except 1 and 2.
Composite numbers have more factors which also include 1 and itself.
Example: 50 is composite because it has factors more than 1 and itself.
5 is a factor of 50; 10 is a factor of 50.
So let's begin sorting.
<em>Prime: 7, 11, 31.</em>
Composite: 4, 8, 10, 27.
Hope this helps! :)
The correct answer is 2.86
Since the question is asking how many pencils the teacher will have to give out, we can automatically ignore the 46 erasers from the problem because it is not relevant. The information was most likely put there to confuse you.
Each student is getting 28 pencils, so if we multiply the number of students by 28 pencils, we will find how many pencils the teacher will need to give out.
There are 42 children in the classroom, so multiply 42 by 28.
42 * 28 = 1,176
The teacher will have to give out <u>1,176 pencils</u> to her 42 children in the classroom.
<span>Answer:
K = (1/2) mv² + (1/2) Iω², where m is the ball mass, I is the ball's moment of inertia (2/5)mr², and ω is the angular velocity of the ball. Because the ball rolls without slipping, it is easy to see that v=ωr, or r=v/ω. Then,
K = (1/2)mv² + (1/2)(2/5)mr²ω²
= (1/2)mv² + (1/5)mv²
= (7/10)mv²
Setting potential at the top equal to kinetic at the bottom,
mgh=(7/10)mv²
v=âš{(10/7)(gh)}
= [(10/7)(9.8)(0.51)]^(1/2) = 2.672m/s</span>
