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Jobisdone [24]
3 years ago
14

Factor completely. 21a^2 - 57a + 30

Mathematics
2 answers:
Kryger [21]3 years ago
8 0
The answer is 3(a-2)(7a-5)
hoa [83]3 years ago
5 0
<span><span> 21a2-57a+30</span> </span>Final result : 3 • (a - 2) • (7a - 5) <span>
hope i helped

</span>

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PLZ HELP MARKIN BRAINIEST!!!
Dahasolnce [82]

From the graph, when x = 1, y = 57,000.

Replace x with 1 in the equations and see if any of the Y 's equal 57,000 :

y = -2610.82(1) + 47860.82 = 45,250

y = 219(1)^2 - 6,506.78(1) + 59,385 = 219 - 6506.78 + 59385 = 53,097.22

y = 54041.5(0.9)^1 =  48,637.35

y = 10,504.6 (1.1)^1 = 11,555.06

The second equation is the closest. so try another x value to see if it is close to the Y value:

Let's try x = 14:

y = 219(14)^2 - 6506.78(14) + 59,385 = 42924 - 91094.92 + 59385 = 11,214.08

This is close to Y = 12,00 shown on the graph

SO the closest equitation is y = 219x^2 - 6506.78x + 59385

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Step-by-step explanation:


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