3 years ago

Please Help! (Image below)

Mathematics

1 answer:

Ivan3 years ago

7 0

Answer:

A is the correct answer

Step-by-step explanation:

I just did this problem

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(4 - 1+ 3/3) 15

ANEK [815]

Solve for what expresssion don’t

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3 years ago

jarptica [38.1K]

Answer:

3 gallons

Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

$100\%=100/100=1$

$20\%=20/100=0.20$

$60\%=60/100=0.60$

we know that

$(1)(x)+(0.20)(3)=(0.60)(x+3)$

solve for x

$x+0.60=0.60x+1.80$

$x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal$

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in order to get a 60% acid solution

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notsponge [240]

Answer:

Step-by-step explanation:

8/16=8:16

2/4=2:4

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Answer:

240 minutes

Step-by-step explanation:

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step 2 - 2:4×60=240

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The slope of p is 3
the slope of q is -3

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