Atorsion balance has a sensitivity requirement (sr) of 6.0 mg. what is the mwq of this balance if the maximum error permitted in using it is 4.2%? [round answer to a whole number]

MWQ is 143 mg

Step-by-step explanation:

given data

sensitivity requirement (SR) =  6.0 mg

maximum error = 4.2%

to find out

MWQ

solution

we know here MWQ formula that is

MWQ =     ................1

so here error is 4.2 % = 0.042

put here all these value in equation 1 we get

MWQ =

MWQ =

MWQ = 142.857 mg

so MWQ is 143 mg

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: