You want to estimate the average weight in tons of loads carried by trucks through a particular stretch of road. From previous information the standard deviation is expected to be σ=19.2 tons. How many trucks must be weighed to estimate the the tons per truck to within 3 tons at a 90% level of confidence. Round your answer up to the largest whole number.

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

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.

/

step-by-step explanation: