Rachel used 4.5 cups of apple juice in fruit punch that serves 12. Andy used 4.75 in his that serves 10. How much more apple jui
1 answer:
Answer:
Andy's punch contains 0.1 of a cup of apple juice more than what Rachel's serve of punch contains.
Step-by-step explanation:
Given:
Rachel uses 4.5 cups of apple juice in fruit punch that serves 12.
Andy uses 4.75 cups of apple juice in fruit punch that serves 10.
To compare the unit cups of apple juice per serving
Solution:
Using unitary method to find the unit prices:
For Rachel 12 servings contain 4.5 cups of apple juice.
∴ 1 serving would contain = cup of apple juice
∴ Per serve content of apple juice = 0.375 of cup
For Andy 10 servings contain 4.75 cups of apple juice.
∴ 1 serving would contain = cup of apple juice
∴ Per serve content of apple juice = 0.475 of cup
Difference in unit cups per serve of apple juice for Andy and Rachel =
On comparing the the unit cups of apple juice per serve for Andy and Rachel we see that unit cup per serve for Andy is more than Rachel by 0.1 of a cup of apple juice.
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Answer:
a) False b) False c) True d) True e) True
Step-by-step explanation:
a) If A is a subset of B, and x∈B, then x∈A. False
Suppose A is Z (Set of Integers), and B is R (Set of Real Numbers). Then A is a subset of B. x ∈ B, let's say x equals π. If x ∈ B (B = Real Numbers) and x=π then x ∉ A (Z).
We could call A, any other subset of Real numbers (Q, I,..) and we both would come up to the same conclusion when it comes to Real numbers the Set.
So this conclusion is False. Not always an element of a subset is an element of a set.
b) False
For this one, I've drawn some lines, and it is useful to work with them.
Given the set {(x,y) ∈ R²| 0<x<0} then all negative and positive numbers but zero belong to this set.
c) If A and B are square matrices, then AB is also square. True
Taking into account the rules for multiplying matrices. The number of columns of A must be the same number of lines of B to there can be a matrix product.
Whenever we multiply square matrices, we'll always get square matrices. Then this conclusion is true.
d) A and B are subsets of a set S, then A∩B and A∪B are also subsets of S. True
Suppose A= Z (Integer Numbers) and B=Q (Rational Numbers) and S= R (Real Numbers)
A∩B = Z∩Q=∅ and A∪B =Z∪Q = subset
Since the ∅ empty set ⊂ in every set and ZUQ is another Subset of R this is a True conclusion.
e) True. For a matrix A, we define A²= AA
For any Power of Matrices, all we have to do is multiply any given matrix by itself for a given number of times.
M²=M*M
M³=M*M*M
