Sam left his school at 3: 05. he walked at a speed of 3.2 mph. 15 minutes later, al started running after him, and he caught up with sam 10 minutes later. what was al’s speed?

8 mph

explanation:  

Time Sam left his school = 3:05  ( 1/4 hr )

Walked at a speed of 3.2 mph

Al’s speed?

AI caught up with Sam 10 minutes later

Time AI ran for = 1/6 hr

Speed = distance /time

Sam’s distance  

3.2 x 1/4 = 0.8 miles

Simultaneous in the same 10 minutes, Sam walks 3.2 x 1/6 =0.53 miles.

AI ran the total distance of -> 0.8+ 0.53 = 1.3 miles  

Speed = distance /time

1/3 divided by 1/6 = 4/3  

4/3 * 6 = 24/3 = 8 mph

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

the answer would be 484

step-by-step explanation:

just multiply 0.484 times 1,000 (formula)