The boardman family walked 2/5 of a mile in 2/7 of an hour. what is their unit rate in miles per hour?

Their unit rate is 1.4 miles per hour.

Step-by-step explanation:

The family can walk miles in of an hour.

Thus, their unit rate in miles per hour can be calculated by:

mile divided by hour

÷

×

=

=

This gives 7 miles in 5 hours.

To show the miles per hour,

1.4 miles in 1 hour.

So the family walked 1.4 miles in an hour.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.