Answer:
s = 6, r = 8 or s = 4, r = 7
Step-by-step explanation:
2r - s = 10
2r = 10 + s
r = 5 + s/2 --(1)
rs - s^2 = 12 --(2)
sub (1) into (2):
(5 + s/2)s - s^2 = 12
5s + 0.5s^2 - s^2 = 12
-0.5s^2 + 5s - 12 = 0
s^2 - 10s + 24 = 0
(s - 6)(s - 4) = 0
therefore s = 6 or s = 4
when s = 6, r = 8 and when s = 4, r = 7
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Answer:
y = 1/2x - 3
Step-by-step explanation:
the slope:
the equation:
with the point (4, -1)
I hope this help you
Answer:
Theory
Step-by-step explanation:
Take any 18 objects
For example in this case
Take 18 chocolates
means one sixth , which practically means how many groups of 6 can be formed
So, Try to divide 18 into groups of 6
Count how many such groups are formed(it will be 3)
So one sixth of 18 is 3
That is, 18 comprises of 3 groups, each group containing 6 chocolates
I hope this helps you
10m+4n= -10
5m+2n= -5
-5m-2n= 5
7m+2n-5m-2n= 21+5
5m=26 m= 26/5
5.26/5+2n= -5
26+2n= -5
2n= -31
n= -31/2
