Sandy left downtown durham, and three hours later, mary left going 46 mph faster to catch up. after another two hours, mary caught up. find sandy's average speed.

  30 2/3 mph

Step-by-step explanation:

Going 46 mph faster for 2 hours, Mary closed a (46 mi/h)×(2 h) = 92 mile gap. That gap was created in 3 hours by Sandy going ...

  (92 mi)/(3 h) = 30 2/3 mi/h

Sandy's average speed was 30 2/3 mph.

Comment on the situation

We wonder what sort of road and traffic situation would allow Mary to go 76 2/3 mph in downtown Durham, while Sandy traversed the same route at 30 2/3 mph.

30 2/3 mi/h

Step-by-step explanation:

Going 46 mph faster for 2 hours, Mary closed a (46 mi/h)×(2 h) = 92 mile gap. That gap was created in 3 hours by Sandy going ...

 (92 mi)/(3 h) = 30 2/3 mi/h

Sandy's average speed was 30 2/3 mph.

please mark me as brainliest.

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)