Answer:
I think the answer is first one, cost 235 and selling price 329
Answer:
2x + y = 12 x = 9 − 2y x + 2y = 9 2x + 4y = 20 x + 3y = 16 2x − y = 11 y = 11 − 2x 4x − 3y = -13 y = 10 + x -3x + 3y = 30 2x + y = 11 x − 2y = -7 x = 2, y = 7 arrowRight x = 5, y = 2 arrowRight x = 3, y = 5 arrowRight x = 7, y = 6
Step-by-step explanation:
4th
Answer:
Step-by-step explanation:
pls write the question so i can solve
These statements are true:

This is <em>true</em> because of the definition of a rhombus which states that opposite sides are parallel.


This is <em>true </em>because the diagonals of a rhombus bisect each other at right angles.

This is<em> true</em> because the four sides of a rhombus are all equals.

This is also <em>true</em>. Two angles are
supplementary when they add up to 180 degrees. Angles in rhombus are equal two to two. Let's name:
Then it is true that:

Besides, a rhombus is a quadrilateral and it is true that the interior angles of a quadrilateral add up to 360 degrees, thus:
We know that
surface area of cylinder=2*[area of the base]+perimeter of base*height
area of the base=pi*r²
r=3 m
area of the base=pi*3²----> 28.26 m²
perimeter of the base=2*pi*r
r=3 m
perimeter of the base=2*pi*3----> 18.84 m
surface area=226.08 m²
226.08=2*[28.26]+18.84*h----> 18.84*h=226.08-2*28.26
18.84*h=169.56-------> h=169.56/18.84-----> h=9 m
the answer is
9 m