Dina leaves her house driving east at 35 miles per hour. Thirty minute later, her husband John notices she forgot her cell phone and sets off after her. How fast must John travel in order to catch up with Dina 2 hours after he leaves?

John must travel at 43.75 mph

Step-by-step explanation:

Let x represent how fast John should travel in order to catch up with Dina 2 hours after he leaves.

By the time they meet, they would have covered the same distance.

Distance = speed × time

Dina leaves her house driving east at 35 miles per hour. Distance covered by Dina in 2 hrs 30 minutes is

35 × 2.5 = 87.5 miles

Thirty minute later, her husband John notices she forgot her cell phone and sets off after her.

Distance travelled by John in 2 hours is x × 2 = 2x

Since they covered the same distance, then

2x = 87.5

x = 87.5/2 = 43.75

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

step-by-step explanation:

if you want to separate 54 into 6 individual tiers then you need to divide if you want to separate 54 into 6 individual tiers then you need to divide 6 and 54.

if you divide 9 by 6 you will get 54.

- hope i .