Sarah rode her bike 53 km in 4 hours. what was her average speed per hour? a. 5.3 km/h b. 12.5 km/h c. 13.25 km/h d. 21.2 km/h

the answer really is 13.25 because you going to divide it

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.