Mario ran 10 miles in 1 hour and 15 minutes (1.25 hours). What was his average speed? 12 miles per hour
six miles per hour
eight miles per hour
10 miles per hour

ASAP PLSS

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7