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harkovskaia [24]
3 years ago
11

Choose the best answer for this length.

Mathematics
1 answer:
Nastasia [14]3 years ago
5 0

Answer:

9 inches

Step-by-step explanation:

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4 raised to power two minus 8u minus 9=0​
coldgirl [10]

Answer:

x can be 3, -3, i, or -i.

Step-by-step explanation:

If you can't find the factoring by looking at this, simplify the equation.

let  

x

2

=

y

to make things easier to see

Now we have  

y

2

−

8

y

−

9

=

0

See it now?

We can factor into  

(

y

−

9

)

(

y

+

1

)

Now substitute back in  

x

2

for  

y

.

(

x

2

−

9

)

(

x

2

+

1

)

Since  

(

x

2

−

9

)

is a difference of two squares,

(

x

−

3

)

(

x

+

3

)

Now we have  

(

x

−

3

)

(

x

+

3

)

(

x

2

+

1

)

x can be 3, -3 for the first two parts

x

2

+

1

=

0

can become  

x

2

=

−

1

Taking the positive and negative root means  

x

=

±

√

−

1

Thus  

x

=

±

i

in addition to 3 and -3.

4 0
3 years ago
Read 2 more answers
ANSWER THIS QUICKLY PLEASE!!!!!!!!!
Vika [28.1K]
It's the second answer.
8 0
2 years ago
Read 2 more answers
Solve for x where xe(0,2pi). state exact answers.
kupik [55]

Answer:

that's the correct answer

6 0
2 years ago
A pentagonal pyramid holds 30 cubic cm of sand. The area of the pentagon equals 9 square cm. Find the pyramid's height.
Aleksandr [31]
Answer =3.333333333 is the answer

30cm divided by 9 cm to get ur answer
In this case it is recurring
3 0
2 years ago
Read 2 more answers
What is equivalent to (x – 8)(x – 6)?
baherus [9]
X^2 - 8x - 6x + 48 i think
6 0
2 years ago
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