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leonid [27]
3 years ago
15

I need with this question please.

Mathematics
1 answer:
lora16 [44]3 years ago
6 0
.........Phitagors theory

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What is f(x) = 7x2 + 42x written in vertex form?
amid [387]

Answer:

\boxed{\boxed{y = 7(x+3)^2-63}}

Step-by-step explanation:

The general vertex form of parabola is,

y=a(x-h)+k

where,

(h, k) is the vertex of the parabola.

The given function is,

\Rightarrow f(x) = 7x^2 + 42x

\Rightarrow y = 7x^2 + 42x

\Rightarrow y = 7(x^2 + 6x)

\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3)

\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3+3^3-3^2)

\Rightarrow y = 7(x^2 + 2\cdot x\cdot 3+3^3)-7\cdot 3^2

\Rightarrow y = 7(x+3)^2-7\cdot 9

\Rightarrow y = 7(x+3)^2-63

This is vertex form the given function.

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3 years ago
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Natalka [10]

Answer:

B

Step-by-step explanation:

There are no repeating values for x, for different values plugged in for y.

3 0
3 years ago
What is the midpoint of a line segment with the endpoints (8, -3) and (-5, -9)?
ioda
I think is is (-6,1.5) correct me if i am wrong
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3 years ago
Charles can type 675 words in 9 minutes. How many words can Charles type in 13 minutes?
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Super easy to get pointsss!!! HELPPPP
jeyben [28]

Answer:

3x3x12= volume of large prism= 108

1x1x12= volume of hole= 12

(Volume of prism)-(volume of hole)= 96

Step-by-step explanation:

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4 years ago
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