They vary directly so y = kx (if they varied INdirectly it would be y = k/x)
y = kx divide both sides by x
y/x = k Now sub in the values given to find k
16/4 = k = 4
Second part: y = kx y = 4x y = 4(7) = 28 when x = 7
From -1 to 1 is a 'distance ' of 2
at -1 value is 3
at 1 value is 27 for a change of 24 over a distance of 2 = 24/2 = 12 avg rate of change per unit
Maybe......but he has posted a lot of statistics problems over the last week or so......He should have an IDEA of how to proceed after seeing the other postings...... We are not here to just do someone's homework....ya need to at least try to answer your own questions and then ask for help
Simple interest 400 (.08 x 4)=......
Compounded annualy interest 400( 1.08)^4 - 400 =.......
Did you try any of these? What answer did you find for the first one?
18 cm is (18 - 15.2)/3.3 = .8485 (rounded to .85) HIGHER than the mean......look at your POSITIVE z-score table under .85 to find the number .8023 this represents the corn cob fraction that is less than 18 cm
.8023 x 250 =~ 200 corn cobs < 18cm
Answer woud be 'C'
If the number is 'b' then b-8 would be 8 less than some number 'b'
LCM (least common multiple) of 2 3 and 5 is 30 seconds.....so each 30 seconds 2 times per minute), all of the lights will be on
......including the initial 'all on' time of zero seconds....that would be 15 times in 7 minutes.
Please don't post questions multiple times, siem !