Laura wants to burn a total of 500 calories. so far, she has burned 445.7 calories. how many more calories must laura burn

3 ft

step-by-step explanation:

since the triangle is right use pythagoras' identity to solve for a

the square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

a² + 8² = ( )²

a² + 64 = 73 ( subtract 64 from both sides )

a² = 9 ( take the square root of both sides )

a = = 3

i would say c is the best answer, hope it's right!

good luck! =)

cutie~