In kickboxing, it is found that the force, f, needed to break a board, varies inversely with the length, l, of the board. If it takes 8 pounds of pressure to break a board that is 3 feet long, how long is a board that requires 5 pounds of pressure to break?

4.8 feet

Step-by-step explanation:

CHECK THE COMMENT, THE EDITOR DOESN'T ALLOW ME TO SUBMIT MY WORKINGS.

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.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7