Write these numbers in standard form. a) six thousand ,
b) four hundred million
c) seventy thousand

Here are the answers I got I hope this is correct!! :)

Step-by-step explanation:

                                     A)  6 x 10^3

                                     B) 4 x 10^8

                                     C) 70 x 10^3

                                                        I hope this helped you sorry for the first try c:

46.2+112.3

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.