A dolphin is 40 feet below sea level. It swims up and jumps out of the water to a height of 10 feet above sea level. How many feet did the dolphin change it's position?

50 feet

Step-by-step explanation: it went 40 feet to get to the surface of the water then it went and extra 10 feet above water so 40+10=50

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%