(B) 16.5π
<u>Explanation:</u>
The shape given is a cylinder
The height, h of the cylinder = 4cm
Diameter of the cylinder = 3cm
Radius, r = 1.5 cm
Surface area of cylinder, A = ?
We know:
Surface area of cylinder = 2πrh + 2πr²
Therefore, the surface area would be 16.5π
Answer: B) one solution
Reason: if we solve for the sides of the equation by putting like terms together we get that x = 3
There is no solution when the numbers don’t equal each other, take for instance 1 = 2
It has infinite solutions when the numbers are equal to each other like
1 = 1
It has one solution when the x value is equal to something like x = 9
I also worked out the equation on paper, so you could get a more visual way of how I solved it.
Hope this helps
The
formula 
, where r! is 1*2*3*...r
is the
formula which gives us the total number of ways of forming groups of r objects out of n objects.
for
example, given 10 objects, there are C(10,6) ways of forming groups of 6, out
of the 10 objects.
<span>Thus, there are C(6, 3) many ways of forming different triples out of 6.</span>
Answer: A.20
<span> y = a(x – h)2 + k, where (h, k) is the vertex. in y = ax2 + bx + c (that is, both a's have exactly the same value). The sign on "a" tells you whether the quadratic opens up or opens down.</span>
