Part a
find ratio a and b if given that
7a=3b
5a+3b=6b
a+b=4a
a+2b/11=b/3
a+3b/5=a-2b/2
part b
if a/3=b/2 what are the following ratios?
a: b
b: a
5a: 3b
a+b/b
a+b/5a
3a-3b/a-b
if completed all of them. first will be awared brainist

Alake near the arctic circle is covered by a sheet of ice during the cold winter months. when spring arrives, the ice starts to melt. s(t) models the ice sheet's thickness (in meters) as a function of time tt (in weeks). s(t)=-0.25t+4

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11