Answer:A-1/2h(b1+b2)
A-1/2*(10.1)*(30.5+21.4)
A-3296.135 i think
Step-by-step explanation:
We'll use Cramer's rule for 2 equations:
ax + by = e
cx + dy = f
5x -3y = 18 a=5 b=-3 e=18
2x + 7y = -1 c=2 d=7 f=-1
denominator determinant (dn) = (a * d) - (c * b) = 5 * 7 - (2 * -3) = 41
x = [(e * d) - (f * b)] / dn
[18 * 7 - (-1 * -3)] / 41 =
123 / 41 = 3
y = [(a * f) - (c * e)] / dn
= (5 * -1) -(2 * 18) / 41 =
-41 / 41 = -1
Source:
1728.com/cramer.htm
So their age can be no more than 22. And Martin is 6 years younger, which means you subtract.
22 ≥ x + x - 6
<span>C side EF=18 cm; side GH = 30 ; height = 6 cm </span>
Answer:
500
Step-by-step explanation:
