Use the variation of parameters formula to find the general solution of the system x' (t) = ax(t) +f(t), where a and f(t) are given:
a = [ 8 -4 ] f(t) = [ t^-2 / 2 ]
[ 4 -2 ] [ t^-2 ]
fyi: a and f(t) are both matrices

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Which statements are true about box plots? check all that apply. they describe sets of data. they include the mean. they show the data split into four parts. they show outliers through really short “whiskers.” each section of a box plot represents 25% of the data.

Type the correct answer in the box. use numerals instead of words. if necessary use / for the fraction bar.