9 + x = 17
17 - 9 = x
x = 8
If I pick n, it becomes 50(2n+5)+1764-2001 this is the expression
13 quarters = 13 *0.25 = 3.25
3.60 - 3.25 = 0.35
0.35 = 0.25 +0.10
he has 1 dime and 14 quarters
Answer is B
<h3>The lateral area for the pyramid with the equilateral base is 144 square units</h3>
<em><u>Solution:</u></em>
The given pyramid has 3 lateral triangular side
The figure is attached below
Base of triangle = 12 unit
<em><u>Find the perpendicular</u></em>
By Pythagoras theorem
Therefore,
<em><u>Find the lateral surface area of 1 triangle</u></em>
<em><u>Thus, lateral surface area of 3 triangle is:</u></em>
3 x 48 = 144
Thus lateral area for the pyramid with the equilateral base is 144 square units