Answer:
-4
Step-by-step explanation:
bc it is
.......................
12x40=480
You can first multiply 12x4=48 and then you could put a zero next to the 8
4^2+b^2=8^2
16+b^2=64
-16. -16
b^2= 48
Sq root each side
b= sq rt 16 sq rt 3
b= 4 sq rt 3
Answer:
Step-by-step explanation:
1) f(x) =0 : x² +9 =0 means x² = -9 ..no solutions in R
2)g(x) =0 : (x-9)² =0 means x-9= 0 ..... single solution : 9
3) h(x)=0 : (x+1)² - 9 = 0 means (x+1)² = 3² so x+1=3 or x+1 = -3
two solutions : 2 and -4
