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lesantik [10]
3 years ago
8

Help! Best/Correct answer = Brainiest.

Mathematics
1 answer:
zubka84 [21]3 years ago
5 0

Answer:

Step-by-step explanation:

looking at the graph,

when x = 3, y = -10

-10 = 2(3)^2 + 3b + 8

-10 = 18 + 3b + 8

-10 = 26 + 3b

3b = -36

b = -36/3

b = -12

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Whats wrong in this equation ?
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The second step is wrong. What should've been done is to find greatest common factor (gcf) of 1/6 and -2. This is because you cannont add together a number with a variable to a number without a variable. So get the variable by itself by subtracting 1/6 from both sides.

1/5x + 1/6 = -2
___— 1/6_— 1/6
____________


Turn -2 into a fraction and find the gcf of -2 and 6:

1/5x + 1/6 = -2
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1/5x = -2/1 — 1/6 ——> 1/5x = -12/6 — 1/6
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Then divide each side by 1/5 to get the variable by itself; remeber: when dividing a fraction by a fraction, you multiply by the reciprocal.

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6 0
3 years ago
Which postulate proves that the triangles below are similar?
Molodets [167]

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AA~

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