Glenn receives 6 birthday cards. If he is equally likely to read the cards in any order. What is the probablitiy that her reads the cards from his parents and his sister before he reads other cards

1:2

Step-by-step explanation:

his parents + sister = 3 people

there fore the ratio is 3:6 but that can be simplified to 1:2 because 3:6 = .5

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.