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Ad libitum [116K]
3 years ago
10

What is f(x) = 2x2 + 28x – 5 written in vertex form? f(x) = 2(x + 7)2 – 19 f(x) = 2(x + 7)2 – 103 f(x) = 2(x + 14)2 – 14 f(x) =

2(x + 14)2 – 98
Mathematics
2 answers:
lesantik [10]3 years ago
7 0

Answer: B. f(x) = 2(x + 7)² - 103

<u>Step-by-step explanation:</u>

y=2x^2+28x-5\\\\\\y+5=2x^2+28x\\\\\\y+5=2(x^2+14x+\underline{\quad}\ )\\.\qquad \qquad \qquad \ \ \downarrow\\.\qquad \qquad \qquad \bigg(\dfrac{14}{2}\bigg)^2=7^2 \\\\\\y + 5 + 2(7)^2=2(x^2+14x+\underline{7^2} )\\\\\\y + 5 + 98 = 2(x + 7)^2\\\\\\y+103=2(x+7)^2\\\\\\y=2(x+7)^2-103

padilas [110]3 years ago
6 0

Answer:

f(x)=2(x+7)^2-103

Step-by-step explanation:

f(x)=2x^{2} +28x-5\\=2(x^2+14x)-5\\=2(x^2+2(7)x+7^2-7^2)-5\\=2(x+7)^2-2(49)-5\\=2(x+7)^2-103

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Please answer asap thanks.
Hitman42 [59]

Answer:

94cm²

Step-by-step explanation:

S = 2(lw + lh + wh)

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Hope this helps! Can u give me brainliest, please:)

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1 year ago
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Leona [35]

Answer:

5

Step-by-step explanation:

\triangle CDE \sim\triangle FGH...(given)

\therefore \frac{CD}{FG}=\frac{CE}{FH}...(csst)

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\therefore x=\frac{7\times 5}{7}

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8 0
2 years ago
n a drawing, a jar holds the numbers 1 to 8. If you draw three numbers to form a three-digit number (without replacement), what
Butoxors [25]

good evening ,

Answer:

p = (1÷8)×(1÷7)×(1÷6)

Step-by-step explanation

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2 years ago
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5 0
2 years ago
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Agata [3.3K]

Answer:

5 and 6

Step-by-step explanation:

The square root of 27 is 5.19615242271  , which is more than 5 but less then 6, therefore is between 5 and 6.

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<em>Hope this helped (: Can you please mark as brainliest?</em>

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