Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats b
1 answer:
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Answer:
a)
b)
c)
d) E(3X + 2) = 21.35
e)
f) V(3X+2) = 140.832
g) E(X+1) = 7.45
h) V(X+1) = 15.648
Step-by-step explanation:
a)
b)
c)
d)
e)
f)
g)
h)
Let r be a radius of a given circle and α be an angle, that corresponds to a sector.
The circle area is
and denote the sector area as 
.
Then
(the ratio between area is the same as the ratio between coresponding angles).
.
The circle area is
Then
75 divided by 15.00 is 20 because of you put 75 into 150 you can put it in 2 times evenly then you take down the 0 and 00 - 0 = 0 so answer is 20 games.
