Answer:
x=7cm.
Step-by-step explanation:
A=1/2(a+b)h.
63=1/2(6+12)x.
63=1/2(18)x.
63=9×x.
63/9=9×x/9.
7cm=x.
x=7cm.
Answer:
The measure of angle z is 59°.
Step-by-step explanation:
Answer:
The equation is y=-6x+3
Step-by-step explanation:
the y-intercept is 3 and the slope is 6
Answer:
It a simultaneous equation so the solution is 2
Step-by-step explanation: