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Licemer1 [7]
3 years ago
14

Will give BRAINLIEST if right!

Mathematics
1 answer:
sattari [20]3 years ago
8 0

Answer:

Vertex is (-1, -9)

Step-by-step explanation:

To find the x-value of the vertex, we use the formula

x

=

−

b

2

a

(This is considered the axis of symmetry).

a

=

1

and

b

=

2

with

c

=

−

8

(These are the numbers in order)

By substituting we get

x

=

−

(

2

)

2

⋅

1

, which simplifies to

x

=

−

1

.

Once you find x, substitute back into the equation to find y.

y

=

(

−

1

)

2

+

2

(

−

1

)

−

8

y

=

1

−

2

−

8

y

=

−

9

Putting the two numbers together you get the coordinates

(

−

1

,

−

9

)

.

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Hello,

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Step-by-step explanation:

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3 years ago
The Haynes family is building an addition to their house that includes a new
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Answer:

<u>Part A</u>

 A_{t}=22(12+w)

Applying Distributive property: A_{t}=264+22w

<u>Part B</u>

A_{t}=660\ ft^2

Step-by-step explanation:

<em><u> Attached is the model that belongs to this exercise (The model was missing)</u></em>

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A=lw

Where "l" is the lenght and "w" is the width.

<u>Part A</u>

Notice that the dimensions of the new bathroom are:

l=22\ ft\\w=12\ ft

We do not know the width of the new bathroom, but we know that both rooms will have the same length. Knowing this, we can write an expression for the total area of both rooms by using the Distributive Property:

A_{t}=22(12+w)

Applying Distributive property:

 A_{t}=264+22w

<u>Part B</u>

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6 0
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Two vans leave a campground at the
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Answer:

92 mph

Step-by-step explanation:

Let the speed of the van travelling south  

=

v

mph  

The distance travelled by the car travelling north is

d

1

=

10

⋅

2.5

=

25

The distance travelled by the car travelling south is

d

2

=

v

⋅

2.5

=

2.5

v

The distance between the cars after  

2.5

h

is

d

1

+

d

2

=

255

25

+

2.5

v

=

255

2.5

v

=

255

−

25

=

230

v

=

230

2.5

=

92

mph

The speed is  

=

92

mph

4 0
3 years ago
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