Answer:
Step-by-step explanation:
A) rational because it’s a fraction
B) rational because it’s a fraction
C) irrational because it’s never ending
We're given pairs (A,B) and asked if we have
enough calcium,
5A + 4B >= 24
enough iron
4A + 6B >= 15
and enough vitamins
7A + 4B >= 15
We check each constraint on each pair; if we find any false we can stop for that pair.
(A,B)=(1,4)
5(1)+4(4)=21 under 24, NO CHECK
(A,B)=(1,5)
5(1) + 4(5) = 25, bigger than 24, good
4(1) + 6(5) = 34, bigger than 15, good
7(1) + 4(5) = 27, bigger than 15, good CHECK
(A,B)=(2,3)
5(2)+4(3)=22, NO CHECK
(A,B)=(3,2)
5(3)+4(2)=23, NO CHECK
(A,B)=(4,1)
5(4) + 4(1) = 24, ok
4(4) + 6(1) = 22, ok
7(4) + 4(1) = 32, ok, CHECK
Hello!
Since the decimal 0.4 is in tenths, you can put it over ten. 4/10. But, it can be simplified,
2/5 is your final answer.
Hope this helps! ☺♥