Answer:
I can't explain here since I can't write numbers.
Step-by-step explanation:
45 cookies will serve 15 students.
You would multiply 15 by 2 that would give you 30, therefore you multiply 45 by 2 which will be 90.
90 cookies will serve 30 students
Answer:
Answer:
safe speed for the larger radius track u= √2 v
Explanation:
The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.
Also given that r_1= smaller radius
r_2= larger radius curve
r_2= 2r_1..............i
let u be the speed of larger radius curve
now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=
r
1
mv
2
=
r
2
mu
2
................ii
form i and ii we can write
v^2= \frac{1}{2} u^2v
2
=
2
1
u
2
⇒u= √2 v
therefore, safe speed for the larger radius track u= √2 v
X/7 = 6/4.2
4.2x = 42
x= 10
Answer: 1/12
Step-by-step explanation:
It asked for 6 yellow roses to 6.
Then it asked for the total so 6+10+12=72
6/72.
Then simplify it 6/6= 1
72/6= 12
So the answer is 1/12