Answer:
hi,
Step-by-step explanation:
A consistent system of equations has at least one solution, and an inconsistent system has no solution.
Here the system has one solution.
X+Y=60kg
X=60-Y
X*0.2+Y*0.7=60*0.5
(60-Y)*0.2+Y*0.7=30
12-0.2*Y+0.7*Y=30
0.5*Y=18
Y=36 kg
X=60-36
X=24 kg
The metal worker should use 24 kilograms of the metal alloy that is 20% copper and 36 kilograms of the metal alloy that is 70% copper.
Answer:
yes
Step-by-step explanation:
A proportional equation is of the form
y = kx where k is the constant of proportionality
y = 150x is proportional
Answer:
Option C
Quantitative, ordinal, discrete
Step-by-step explanation:
The data set will be quantitative because to measure and analyze it, we will have to count the soft drinks of the various sizes.
Once data is counted to determine the quantity that falls into a particular category, the analysis is quantitative.
The data set will also be ordinal, because we are classifying t using a scale of small medium and large. Once scales can be assigned to a data set to quantify it, it becomes ordinal.
The data set is also discrete because only distinct whole numbers can be used to enumerate the cans. The data is not continuous. this means that you can either count one can or two cans; never half a can of the soft drink
