Refer to the comparison of the daily adult intake of selenium in two different regions of the united states, in exercise 8.61. suppose that you wish to estimate the difference in the mean daily intake between the two regions, correct to within 5 μg, with probability .90. if you plan to select an equal number of adults from the two regions (that is, if μ1 = μ2), how large should n1 and n2 be?

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

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.