Answer:
223.5
Step-by-step explanation:
1/2*12=18 18*12=216 7+216+1/2=
Answer:
There are 44 yellow slabs.
Step-by-step explanation:
Multiply 1/5 x 55. This gives you 11. 55 - 11 = 44.
Answer:
4/9
Step-by-step explanation:
You're welcome i worked it out on a piece of paper
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