, 21.06.2019mucciak8356

# Ateacher wants to see if a new unit on taking square roots is students learn. she has five randomly selected students take a pre-test and a post test on the material. the scores are out of 20. has there been improvement? (pre-post) find the standard error. meralysss

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is = ← substitute values = ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2 needhelp9627

hi im bob : l

step-by-step explanation: Tyrant4life
Ithink it is b and d nevecronin

answer: it is 1: 47 pm  ### Other questions on the subject: Mathematics Mathematics, 21.06.2019, karinagramirezp072gb Mathematics, 21.06.2019, lekepius3715
2x + 4y = 144x + y = 20multiply by -42x + 4y = 14-16x - 4y = -80 (result of multiplying by -4)add-14x = -66as u can see, ur y's cancel outso ur answer is : 1st answer choice <==...Read More Mathematics, 21.06.2019, versaceblooper
explanation: previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and...Read More  Mathematics, 22.06.2019, daphnevlogs11
The answer is the first diagram.Step-by-step explanation:  We are given two diagrams out of which we are to select the one which shows lines must be parallel lines cut by a transv...Read More   