Answer:
B) 72 cm²
Step-by-step explanation:
<u>Area of a trapezoid formula:</u>

<u>Given:</u>
a = 15
b = 9
h = 6
Work:

Answer:
Step-by-step explanation:
a) 3x^2-12x-11=3*x^2-3*2*2*x+3*4-23=3*(x^2-2*2x+2^2)-23=3*(x-2)^2-23
so a= -2 ,b= -23
b) x1=[12+V(12^2-4*3* -11)]/6=12/6+V(144+132)/6=2+2/6V69=2+1/3V69=
2+V69/9=2+V23/3
c=2, d= 23/3
Answer:
w= -2h
Step-by-step explanation:
Answer:
The amount Sandy earns from babysitting is proportional to the number of hours she works. The graph represents this proportional relationship.
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
The square root of 169 is 13