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vladimir1956 [14]
4 years ago
9

4x + 8 = 12 what does variable x equal

Mathematics
2 answers:
IgorC [24]4 years ago
8 0
4x + 8 = 12

4x = 12 - 8

4x = 4

x = \frac{4}{4}

x = 1
ANEK [815]4 years ago
6 0
×=1

4× + 8 = 12
- 8 = -8

4× =4
--- ---
4 4
× = 1
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The two box-and-whisker plots below show the scores on a math exam for two classes. What do the interquartile ranges tell you ab
Neko [114]
The interquartile range is a measure that indicates the extent to which the central 50% of values within the data set are dispersed.
The interquartile range: Upper quartile - Lower quartile
As we can see in the box-and-whisker plots:
Class A:  89-66 = 23
Class B: 94-79 = 15
This shows that the spread in the scores of class A within the central 50% of values is higher than the spread of the scores of the class B.
5 0
3 years ago
An animal feed to be mixed from soybean meal and oats must contain at least 168 lb of protein, 27 lb of fat, and 14 lb of minera
atroni [7]

Answer:

The animal farm should buy 1.775 bags of soybeans and 1.575 bags of oats

Cost = 51.275

Step-by-step explanation:

The given parameters can be summarized as:

\begin{array}{cccc}{} & {x} & {y} & {Total} & {Protein} & {70} & {21} & {168} &{Fats}& {9} & {7} & {27} & {Minerals} & {7} & {1} & {14}& {Cost} & {21} & {7} & {} \ \end{array}

Where: x = Soybeans and y = Oats.

So, the system of equations are:

70x + 21y = 168

9x +7y = 27

7x + y = 14

Cost = 21x + 7y

The best way to solve this, is using graph

Plot the following equations on a graph, and get the points of intersection:

70x + 21y = 168

9x +7y = 27

7x + y = 14

From the attached graph, we have:

(x_1,y_1) = (1.636,2.545)

(x_2,y_2) = (1.775,1.575)

(x_3,y_3) = (2.023,1.256)

Substitute each of the values of x's and y's in the cost function to get the minimum cost:

Cost = 21x + 7y

(x_1,y_1) = (1.636,2.545)

Cost = 21 * 1.636 + 7 * 2.545

Cost = 52.171

(x_2,y_2) = (1.775,1.575)

Cost = 21 * 1.775 + 7 * 1.575

Cost = 48.3

(x_3,y_3) = (2.023,1.256)

Cost = 21 * 2.023 + 7 * 1.256

Cost = 51.275

The values of x and y that gives the minimum cost is:

(x_2,y_2) = (1.775,1.575)

and the minimum cost is:

Cost = 48.3

Hence, the animal farm should buy 1.775 bags of soybeans and 1.575 bags of oats

5 0
3 years ago
Calculate 1/3+-5/6+-3/4
Umnica [9.8K]
9/12 is the answer to your question
5 0
3 years ago
Read 2 more answers
Please help is for now
omeli [17]
V(t)= 5000 - 500t I think
4 0
3 years ago
Write the sentence as an equation:<br> 30 is 369 more than w
OverLord2011 [107]

Answer:

30 = w + 369

Step-by-step explanation:

or

w + 369 = 30

8 0
3 years ago
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