Answer:
A
Step-by-step explanation:
ANSWER
B. x=3,y=2
EXPLANATION
The given equations are

and

We add the two equations to eliminate y.
This implies that that:

Simplify:

Divide both sides by 2.

We put x=3 into any of the equations to find y.
Let us substitute x=3 into equation (1) to get:



Divide both sides by -3 to get;

The solution is therefore x=,y=2.
Answer:
AB=8cm
Step-by-step explanation:
Since ABC is a right angled triangle,
Using pythagoras theorem,
h²=p²+b²
or, BC²=AC²+AB²
or, 17²=15²+AB²
or, 289=225+AB²
or, 289-225=AB²
or, AB² = 64
so, AB=8 cm
Answer:
Step-by-step explanation:
c(25) = 85(25) + 600 = 2725