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ryzh [129]
3 years ago
8

I'll give brainliest if you answer it, also 25 points.

Mathematics
2 answers:
zimovet [89]3 years ago
8 0

Answer:

my best guess would be use a calculater

Step-by-step explanation:

PilotLPTM [1.2K]3 years ago
8 0

Answer:

The first one is 6

The second one is 15

the third one is 5

the last one is 200

Step-by-step explanation:

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If an exam is 75 questions long, a 100% being the highest grade, and 79% and below is failing, how many questions can you miss i
natita [175]
It's a C + 

You did a well! 

Hope this helped!
6 0
4 years ago
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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
HURRY I NEED HELP <br><br> 1. IS 1/4 and 1/3 equivalent HURRY
icang [17]

Answer:

no

Step-by-step explanation:

7 0
2 years ago
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What is the surface area of a cylinder whose radius is 3 inches and whose height is 10 inches? round to the nearest tenth
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2 x [pi] x r^2+ (2 x [pi] x r x h)
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Please help it’s hard
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The answer is 1/2 due to the slope
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