Answer:
they are asking u if the antibiotic is working the answer is b
108 is the answer for this question
Answer:
yes it is!!
Step-by-step explanation:
Part a: For variable X using z score you have (x-30)/10, replace X for this expression in (a), i mean Z=2+10((x-30)/10) = 2+x-30= put this in the way of z score = (x-18)/1, so the mean is 18 and standard deviation is 1.
Part b: Z=X+Y= (x-30)/10 + (x-20)/8 = solve adding fractions = (18x-440)/80 now divide all the numbers between 18 (because you need to show as z score way) = (x-24.4)/4.4, so the mean is 24.4 and standard deviation is 4.4.
For part c,do the same.
Answer:
8 apples for $10.24 as your getting more apples for almost the same price.
Step-by-step explanation:
$6.25 divided by 5 is $1.25 so that would be $1.25 per apple
$10.24 divided by 8 is $1.28 so that would be $1.28 per apple
