Stu trained for a triathlon for 5 hours yesterday. he ran 5 miles and then biked 80 miles. his biking speed is 15 mph faster than his running speed. what is his running speed?

Step-by-step explanation:

Given as :

The distance cover while running = = 5 miles

Let The speed for running =

The distance cover with bike = = 80 miles

The speed for biking = = 15 mph +  

Total Time taken = 5 hours

Now Time =

∴ 5 hour = +  

Or,  5 hour = +  

Or, 5 hour =

or,  5 × () =

Or, -   = 0

or, = 0

or,   = 0

Or, = 0

Or, = 0

Or, = 0

∴ = 3 , - 5

So, the running speed = 3 mile per hour

And the biking speed = 15 mph + 3 mph = 18 mile per hour

Hence The running speed of Stu is 3 mile per hour  .  Answer

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)