Jenna takes a survey of students in her class to determine how many hours they studied for their math exam. the mean of the responses is 5.6 hours. which conclusion must be true?

a) no one in the class studied more than 5 hours.
b) every member of the class studied for the exam.
c) at least one person in the class studied 1 hour.
d) at least one person in the class studied more than 5 hours.

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

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.