I know it’s a lot but 23 points and will make brainliest!!! Please do 5-10

Mathematics

1 answer:

hodyreva [135]2 years ago

5 0

Answer:

5, 20 - 52 = x

6, x - 27 = 5

7, 4 + x = 6

8, 14 - x = 29

9, x - 54 = 12

10, x + 25 = 40

Step-by-step explanation:

hope this is what u wanted.

brainiest please

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The function f is defined by f(x)=5x+k, where k is a constant. Find k, if the value of f at x=2 is equal to 14.

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Answer:

20 gallons of the 40% solution, 60 gallons of the 80% solution

Step-by-step explanation:

Let x = the gallons of the 40% solution, and y = the gallons of a 80% solution. The first thing we want to do here is to convert each percentage into decimal form - including the 70% solution mixture.

40% = 0.40,

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As you can tell, 0.40 is associated with x gallons, 0.80 is associated with y gallons, and the mixture contains 0.70 $*$ 80 solution, as 0.70 is associated with 80. Therefore we can formulate the following expression,

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At the same time x + y = 80, as the solution ( mixture ) is present with 80 gallons. Isolating x, x = 80 - y. Let us plug that into our expression, solving for y, following by x gallons.

$0.40\left(\:80\:-\:y\:\right)\:+\:0.80y\:=\:0.70\:\cdot \:80$