Answer:
$7.56
Step-by-step explanation:
They sell it in $2.25 per kg
Hamburger: cost
1 kg : 2.25
3.4 : 7.56
1 x 3.4= 3.4
so, 2.25 x 3.4= 7.56
Answer:
78.5
Step-by-step explanation:
x3.14 (pie)
so then substitute.
5x5=25
25x3.14=78.5
The number 21/5 is a rational number because it can be simplified down to 4.2, or 21/5
Answer:

Step-by-step explanation:
we know that
The formula to calculate the coordinates of the midpoint between two points is equal to

we have that
The coordinates of diagonal WY are

substitute in the formula to calculate the midpoint



Answer: 6
SOLUTION
∵segment
is tangent to the circle at point C.
∴∠MCA=∠MCB=90°
Suppose 
From the Pythagorean theorem
MA²=9²+
²
MB²=4²+
²
∴MA²+MB²=AB²
i.e. 
We conclude that 