Answer:
(x, y) =(-1, - 1)
Step-by-step explanation:
-Substitute the value of x
-solve the equation
-Substitute the value of y
-check the possible solution
-check solution
-simplify
Answer:
60 girls play sports
Step-by-step explanation:
#1- divide 105 by 7=15
#2- multiply 4 by 5= 60
therefore 60 of the 105 girls play sports
For this case we have to by definition:
1 kg equals 1000 grams
Shark 1:
405 kg and 68 grams

Thus, shark 1 weighs 405,068 grams.
Shark 2:
324 kg and 75 grams

Thus, shark 2 weighs 324,075 grams.
Subtracting we have:

Thus, shark 1 weighs 80,993 grams more than the second.
Answer:
Shark 1 weighs 80,993 grams more than the second.