Answer:
8
Step-by-step explanation:
x=average
(x+x+x+x)/4=average
to increase x by 2 you add 2
x+2=average
(x+2+x+2+x+2+x+2)=4=(4x+8)/4=x+2
you'd have to increase the sum by 8 to make the numbers' averages' go up by 2
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
=
mu
................ii
form i and ii we can write
v^2= \frac{1}{2} u^2v
u
⇒u= √2 v
therefore, safe speed for the larger radius track u= √2 v
a) A n (B' n C') = {3, 9}.
b) (AUB) n (BUC) = {2,4,5,6,7,8}
a) Rewriting C ; C = {4,5,6,7,8}
B' = {3,5,7,9} and C' = {2, 3, 9}
so (B' n C') = {3, 9}
and A n (B' n C') = {3, 9}.
b) {A U B} = { 2,3,4,5,6,7,8,9} and {B U C} = {2,4,5,6,7,8}
so (AUB) n (BUC) = {2,4,5,6,7,8}
Hey there!
On the horizontal axis, the x-axis, find the point where it says 8.
Then move up to where the y-coordinate is 5.
That is the point (5, 8)
(This basically means- 8 units right and 5 units up)
Let me know if this helps :)
