Answer:
i think its just the last one
Step-by-step explanation:
because the first two are all real numbers and the thrid equals one
Answer: The missing length is 40 m.
Step-by-step explanation:
30^2 + b^2 = 50^2
900 + b^2 = 2500
-900 -900
b^2 = 1600
b= 40
Captain has $30 money
Flame has $20 +$5 =$25
difference =30-25=5
Captain has $5 more money
ANSWER
C) (6,-8)
EXPLANATION
The equations are:

and

We substitute the first equation into the second equation to get:

We multiply through by 3 to get:

Group similar terms,


Divide both sides by 7 to get,

Put this value of x into the first equation to get;

