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bogdanovich [222]

3 years ago

12

How many gallons of a 90% antifreeze solution must be mixed with 100 gallons of 30% antifreeze to get a mixture that is 80% anti

freeze?

1 answer:

Grace [21]3 years ago

7 0

The answer for this question would be 30%

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Blizzard [7]

Step-by-step explanation:

$y = \sqrt{x + 7} - 1$

Replace x and y.

$x = \sqrt{y + 7} - 1$

Solve for y.

$x + 1 = \sqrt{y + 7}$

Square both sides.

$(x + 1) {}^{2} = y + 7$

$(x + 1) {}^{2} - 7 = y$

This is the inverse function or you can also say

${x}^{2} + 2x - 6 = y$

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Please help quick i will give brainlist!!!!!!

ipn [44]

Answer:

a) 75/3=25/1

Step-by-step explanation:

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Step-by-step explanation:

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Expand and simplify 4x + 2 (x - 5)

iragen [17]

Step-by-step explanation:

4x+2x-10

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