Answer:
7.
I) must be true
II) 1 - 1 < 2 - 4 --> false
III) (-10)*(-10) < 1*1 --> false
IV) 1/2 < 2/10 --> false
So (B) 1 must be true
8.
x!·(x + 1)!/2 = (x + 1)!^2 / (2·(x + 1)) = (17 + 1)!^2 / (2·(17 + 1)) = 18!^2 / 6^2
(D)
9.
2·√3·6 = √((2·√3)^2 + 6^2)·h --> h = 3 --> (C)
slope intercept form
y= mx+b
3x+y =7
subtract 3x from each side
y = -3x+7
I believe the answer is 25% or C). If you flip the half circles around then you get a full circle. When you look at the corners it is about 25%
Hey!
Perimeter=60cm
Let sides be 'x'
Side 1=2x
Side 2=6x
Side 3=7x
Permiter of a triangle= s1+s2+s3 (sum of all sides)
60=2x+6x+7x
60=15x
60/15=x
x=4
Side 1= 2×4=8cm
Side 2=6×4=24cm
Side 3=7×4=28cm
Hope it helps...!!!
