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rodikova [14]
3 years ago
11

Four ingredients costing $320 per kg, $240 per kg, $160 per kg and $80 per kg are mixed so that their masses are in the ratio 4:

1:3:2. Calculate the average cost per kg of the mixture. ​
Mathematics
1 answer:
Mariulka [41]3 years ago
6 0

Answer:

$2160

Step-by-step explanation:

(320*4)+(240*1)+(160*3)+(80*2) = 2160

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Bea orders takeout. she orders a drink that costs $2.50, an appetizer that costs $8.50, and a sandwich that costs $15.30. what w
Over [174]

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%. Bea's total will be $33.40.

<h3>What are Percentages?</h3>

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given that Bea orders a drink that costs $2.50, an appetizer that costs $8.50, and a sandwich that costs $15.30.

Cost of the order

= Cost of a drink + Cost of an appetizer + Cost of a sandwich

= $2.50 + $8.50 + $15.30

= $26.3

Also, she needs to pay 7% sales tax and 20% tip, therefore, in total, we can write,

Total cost

= Cost of the order + 7% of Cost of the order + 20% of Cost of the order

= $26.3 + 0.07($26.3) + 0.20($26.3)

= $26.3 + $1.841 + $5.26

= $33.401 ≈ $33.40

Hence, Bea's total will be $33.40.

Learn more about Percentages here:

brainly.com/question/6972121

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4 0
2 years ago
Select all of the following true statements if R = real numbers, Z = integers, and W = {0, 1, 2, ...}
scoundrel [369]
We can start solving this problem by first identifying what the elements of the sets really are.

R is composed of real numbers. This means that all numbers, whether rational or not, are included in this set.

Z is composed of integers. Integers include all negative and positive numbers as well as zero (it is essentially a set of whole numbers as well as their negated values).

W on the other hand has 0,1,2, and onward as its elements. These numbers are known as whole numbers.

W ⊂ Z: TRUE. As mentioned earlier, Z includes all whole numbers thus W is a subset of it.

R ⊂ W: FALSE. Not all real numbers are whole numbers. Whole numbers must be rational and expressed without fractions. Some real numbers do not meet this criteria.

0 ∈ Z: TRUE. Zero is indeed an integer thus it is an element of Z.

∅ ⊂ R: TRUE. A null set is a subset of R, and in fact every set in general. There are no elements in a null set thus making it automatically a subset of any non-empty set by definition (since NONE of its elements are not an element of R).

{0,1,2,...} ⊆ W: TRUE. The set on the left is exactly what is defined on the problem statement for W. (The bar below the subset symbol just means that the subset is not strict, therefore the set on the left can be equal to the set on the right. Without it, the statement would be false since a strict subset requires that the two sets should not be equal).

-2 ∈ W: FALSE. W is just composed of whole numbers and not of its negated counterparts.
5 0
4 years ago
Read 2 more answers
On the first five performance scores at work, your scores were: 84, 83, 92, 80, and 95. On the average, what was your score?
ser-zykov [4K]

Its C, you have to add all the numbers up and divide by how many numbers there are

4 0
3 years ago
Explain when you would use each method (finding multiples or prime factorization) for finding the LCM and shy
Rudik [331]
For example, the LCM of 10, 30, 45 is 5.
List out the prime factorization of all 3 numbers. 
10=2*5
30=2*3*5
45=3*3*5
As you can see, in all 3 prime factorizations, 5 is the biggest, and the only prime number present in all of the listed prime factorizations. Hope this answers your question! 
3 0
4 years ago
PLEASE HELP!!
AlexFokin [52]

Answer:

20.3?

Step-by-step explanation:

16ft / 52=20.3

please keep in mind that this may not be correct.

7 0
3 years ago
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