Easiest method solving 2 unknowns is Substitution.
So there will normally be 2(ormore)equations given.
Say
X+Y= a
bX=cY + d
a b c d are numbers they give
So first we rearrange the first equation
X = a - Y
No we substitute this into the 2nd equation so that we can get Y
since we know X = a-Y,
b(a-Y) = cY + d
we rearrange and we can find Y for this, it is just Y and numbers
hence finding Y, we sub the value for Y into X = a-Y and we get X also .
Answer:
The answer is 4/5
Step-by-step explanation:
#Hope it helps uh.....
Im pretty sure it’s All students in each grade because it says she wants the sample from the ^entire^school
Answer:
Radius = 8 mm
Slant Height = 14 mm
Step-by-step explanation:
Base of a cone is a circle.
Area of circle is given as 
Where 
is the radius.
Given that
Hence, radius is 8 mm.
Formula for Lateral Surface Area of a cone:
Where is the radius and
is the slant height of cone
Given that 
Hence, slant height is 14 mm
