Chloe drives from her house to her grandma's house 48 miles away in an hour and 12 minutes. how fast was she driving on average? 4 mph 67 mph 90 mph 40 mph

To find a speed in miles per hour, we need to divide a number of miles by a number of hours.

We are given 48 miles, so we already have a number of miles.

We are given the time as 1 hour and 12 minutes. We need to convert this time into hours.

1 hour + 12 minutes = 1 hour + 12/60 hour = 1.2 hours

speed = distance/time = 48 miles / 1.2 hours = 40 mph

The fourth choice, 40 mph.

Working in minutes might give us a little more flexibility here, so we can start by converting 1 hour and 12 minutes, giving us 60 + 12 = 72 minutes for Chloe to drive 48 miles.

We can write her Chloe's rate then as 48 mi/72 min; since 48 and 72 have the factor 12 in common, we can reduce this to a rate of 4 mi/6 min. We want to find how many miles Chloe would travel in 60 minutes at that rate. Since 60 = 6 x 10, we can scale the rate up by a factor of 10, getting us a rate of 4 x 10 = 40 mi/60 min, or 40 mph.

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.