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lara [203]
3 years ago
6

Dan factored x^2+121 into (x+1-11)

Mathematics
1 answer:
babunello [35]3 years ago
4 0

Answer:

Your question is a little unclear.  If you are just trying to factor x² + 121, it's prime.  (can't be factored using real numbers).

Step-by-step explanation:

The difference of two squares is a special form.  a² - b² = (a+b)(a-b).  

But, the sum of two squares is prime.  a²+ b² cannot be factored.

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A converging lens of focal length 5 cm is placed at a distance of 20
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The object should be placed 20/cm from the lens so as to form its real image on the screen

<h3>Mirror equation</h3>

The mirror equation is given according to the expression below;

1/f = 1/u + 1/v

where

f is the focal length

u is the object distance

v is the image distance

Given the following parameters

f = 5cm

v = 20cm

Required

object distance u

Substitute

1/5 = 1/u +1/20

1/u = 1/5-1/20
1/u = 3/20

u = 20/3 cm

Hence the object should be placed 20/cm from the lens so as to form its real image on the screen

Learn more on mirror equation here; brainly.com/question/27924393

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2 years ago
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Step-by-step explanation:

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3 years ago
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Sonya is 22 years younger than her mother. the sum of their age is 32. how old are they​
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Sonya is ten her mother is 22

Step-by-step explanation:

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Which property of multiplication is shown? S =s x 1
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soldi70 [24.7K]

Answer:

Jaime's. Interval not centered around the point estimate.

Step-by-step explanation:

When constructing a confidence interval based on a point estimate, the obtained point estimate must be the central value of the interval.

For Jaime's interval

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For a point estimate of 0.12, only Mariya's interval is adequate since Jaime's is not centered around the point estimate.

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