Sarah is training for a bike race. she rides her bike 5 3/4 miles in 1/3 hour. what is sarah's rate miles per hour?

Step-by-step explanation:

Sarah's rate is 17 miles per hour.

Step-by-step explanation:

we can use proportion to solve this;

Let x represent sarah's rate miles per hour

5 3/4 miles = 1/3 hour

    x             = 1 hour

cross-multiply

5 3/4  = 1/3 x

but 5 3/4 =

 =  

cross- multiply

4x = 23× 3

4x =69

Divide both-side of the equation by 4

=

(On the left-hand side of the equation, 4 at the numerator will cancel-out 4 at the denominator while on the right-side of the equation 69 will be divided by 4)

x  =  17 miles

Therefore Sarah's rate is 17 miles per hour.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: