4. Cindy is saving for a trip to Hawaii. Each

Mathematics

1 answer:

Phoenix [80]3 years ago

6 0

Answer:

Step-by-step explanation:

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For f(x)=2x + 1 and g(x)= x^2 - 7, find (f + g)(x)

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You need a 50% solution. On hand, you have a 200 mL of a 35% alcohol mixture. You also have 70% alcohol mixture. How much of the

CaHeK987 [17]

Answer:

150 mL

Step-by-step explanation:

We need a mixture that is at 50%, now we have 200 mL at 35% and another mixture that is at 70%, that is, we must calculate how much of this mixture is added, by the following equation

200 * 35% + x * 70% = 50% (x + 200)

70 + 0.7 * x = 0.5 * x + 100

0.7 * x - 0.5 * x = 100 - 70

0.2 * x = 30

x = 30 / 0.2

x = 150

150 mL must be added so that the mixture is 50%.

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3 years ago

What’s this question

yKpoI14uk [10]

<h3>Hm ok, so the correct answer here would be (0,3) and heres why:</h3>

If the y would be equal to 0, everything would then just depend if you add or subtract the x:

$y-x=-3\\\\y+x=3\\\\y= 0\\x=3\\\\then:\\\\0-3=3\\and\\0+3=3$

Now the first answer could be correct for:

$y-x=-3\\because\ if\\\\y=-3 \ and \ x=0 \ then\\-3-0=-3$

However, this answer is not correct for the other equation. the same true for all the other answers except (0,3)

<h3>Now if you like this answer and want to see more, please punch that Like button, Comment, and Rate this answer! Also, make sure to send me a friend request. I'm always up for a challenge!</h3><h2>Thanks!</h2>

ps. could you please mark me Brainlyest if you can? I kinda need it to help maintain and reach my next rank... thx

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Write the number 0.5 in the form mc003-1.jpg, using integers, to show that it is a rational number.

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