a boy scout troop is selling christmas trees at a local tree lot. in the morning, they sold 20 douglas fir trees and 23 noble fir trees, earning a total of $2,417. in the afternoon, they sold 20 douglas fir trees and 18 noble fir trees, earning a total of $2,022. how much does each type of tree cost?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

In this problem, we explore the effect on the standard deviation of multiplying each data value in a data set by the same constant. consider the data set 14, 6, 8, 15, 15. (a) use the defining formula, the computation formula, or a calculator to compute s. (round your answer to one decimal place.) s = 4.28 (b) multiply each data value by 3 to obtain the new data set 42, 18, 24, 45, 45. compute s. (round your answer to one decimal place.) s = 12.83 (c) compare the results of parts (a) and (b). in general, how does the standard deviation change if each data value is multiplied by a constant c? multiplying each data value by the same constant c results in the standard deviation remaining the same. multiplying each data value by the same constant c results in the standard deviation being |c| times as large. multiplying each data value by the same constant c results in the standard deviation increasing by c units. multiplying each data value by the same constant c results in the standard deviation being |c| times smaller. (d) you recorded the weekly distances you bicycled in miles and computed the standard deviation to be s = 3.8 miles. your friend wants to know the standard deviation in kilometers. do you need to redo all the calculations? yes no given 1 mile ≠1.6 kilometers, what is the standard deviation in kilometers? (enter your answer to two decimal places.)

Circle a is intersected by lm and mo 60° 155 what is the measure of lmo enter your answer as a decimal in the box. mlmo =