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suter [353]
3 years ago
9

PLEASE ANSWER RIGHT AWAY!!!

Mathematics
1 answer:
artcher [175]3 years ago
4 0

Answer: option 3

is correct

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Rafael Drive 405 miles using 20 gallons of gas. At that rate, how many gallons of gas would he need to drive 243 miles?
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This is how I'd set it up:
405/20 = 243/x 
this means the mpg (miles / gallons) for 1 situation is the same as the mpg for the other situation (because the rate is the same)
then just cross multiply and solve:
405x=243*20 or 405x=4860 or x = 12
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Write the fraction 6/6 as a sum of fractions three different ways
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What number multiples to -12 and adds to 4 (factoring: diamond method)
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Step-by-step explanation:

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The graph of a quadratic function contains (4,-64) and it's vertex is at the origin.write an equation for this function.
lesya692 [45]

Answer:

Step-by-step explanation:

Not sure what form you need this in, but it really doesn't matter, as you'll see in the final equation.  I used the vertex form and solved for a:

y=a(x-h)^2+k

We are given the vertex (h, k) as the origin (0, 0), and we have a point that the graph goes through as (4, -64).  That's our x and y.  Plugging in what we have:

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