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jarptica [38.1K]
3 years ago
5

Which of the following graphs is described by the function given below? y = 2x^2 + 8x +3

Mathematics
2 answers:
Masja [62]3 years ago
8 0

Answer:

A

Step-by-step explanation:

y = 2x² + 8x + 3

Complete the square:

y = 2(x² + 4x) + 3

y = 2(x² + 4x + 4) + 3 - 2(4)

y = 2(x + 2)² - 5

So the vertex is at (-2, -5).  The graph must be Graph A.

Alekssandra [29.7K]3 years ago
3 0

Answer:

The answer is Graph (A.)

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Abraham is installing carpet in his bedroom. On the blueprints, Abraham's bedroom is 6 inches wide and 10 inches long. If the sc
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Answer:

240 square feet

Step-by-step explanation:

Hello, I can help you with this

Step one

find the real scale

According to the data

scale is 1 in : 2 ft

also remember  1ft=12 inches

so

scale is 1in: 2(12 inches)

scale is 1 in :24 in

the purpose of use inches a unit in both sides is to eliminate the, the scale must be adimensional

so escales is

1:24  , this means, that a measure on the blueprint must be multiplied by 24 to know its real value

Step 2

with the escale find the real dimensions, you can use a rule of three

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blueprint ⇔ bedroom

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x=(6*24)/1

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x=240 inches=20 ft

Step  3

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Have a good day

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Answer:

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