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notsponge [240]
3 years ago
12

Identify the resulting probability as theoretical or experimental. One-half of the people in a chess club are adults 21 years ol

d or older. The other half are younger. What is the probability that a club member chosen at random will be under 21 years old?
A. The experimental probability is 50%.
B. The experimental probability is 75%.
C. The theoretical probability is 75%.
D. The theoretical probability is 50%.
Mathematics
2 answers:
Alborosie3 years ago
8 0
The correct answer is <span>D. The theoretical probability is 50%.

Hope this helps!
</span>
IrinaVladis [17]3 years ago
5 0

D. The theoretical probability is 50%.

theoretical cuz' no experiment done yet. the prob is 1-50%=50%.

so D is the ans.

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6.75$

Step-by-step explanation:

because 15% of 45$ is 6.75$

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2 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
What is the simplest version of 9/16×4/18​
Masja [62]

Answer:

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Step-by-step explanation:

9/16 * 4/18

Rewriting

9/18 * 4/16

9/18 = 1/2   and 4/16 = 1/4

1/2 * 1/4

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6 0
3 years ago
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