What fractional part of a week is 63 hours

a) 7/24. b) 3/8. c) 24/63

d) 4/7. e) 7/9

Week = 21/56

Step-by-step explanation:

1 week=24×7

1 week =168 hours

? Week =63 hours

By cross multiplying both equations

? Week=63/168

Week=21/56

d

step-by-step explanation:

d

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!