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solmaris [256]
3 years ago
5

7n - 5 (Write a polynomial that represents the area of the square.)

Mathematics
1 answer:
zalisa [80]3 years ago
8 0

Answer:

49n² - 70n + 25

Step-by-step explanation:

Area of a square = s²

Where,

s = side length = 7n - 5

Area of the square = (7n - 5)²

= (7n - 5)(7n - 5)

= 7n(7n - 5) -5(7n - 5)

= 49n² - 35n - 35n + 25 (distributive property of equality)

Add like terms

Area = 49n² - 70n + 25

Step-by-step explanation:

i might be wrong sorry x

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To get the answer you multiply giving the answer of 10,120.
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4 years ago
Read 2 more answers
I NEED HELP PLEASE ?!!
Fittoniya [83]
The circle equation is in the format (x – h)² + (y – k)² = r², with the center being at the point (h, k) and the radius being "r".

QUESTION 11.
Equation x²+y²+10x-14y-7 =0 can be rewritten as: x²+10x+25 + y² -14y + 49 -7 - 25 - 49=0
It can be factories as (x + 5)² + (y – 7)² = 9²

Therefore the radius equals 9 and the center is (-5,7)

QUESTION 12.
From equation (x + 4)² + y² = 121

The radius equals √121 = 11 and the center is (-4,0)

QUESTION 13.
As there are missing information in the question, I can't assist. However, you can use the general circle equation (x – h)² + (y – k)² = r² to solve the question.

Finally equations 14 & 15 aren't linear.

Hope that helps you :)
5 0
3 years ago
For several years, Graham has gathered data on students who own a computer and on their performance on a typing-speed test. He c
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
Data collected at Toronto Pearson International Airport suggest that an exponential distribution with mean value 2,725 hours is
Rzqust [24]

Answer:

P(X >2)

And we can calculate this with the complement rule like this:

P(X>2) = 1-P(X

And using the cdf we got:

P(X>2) = 1- [1- e^{-\lambda x}] = e^{-\lambda x} = e^{-\frac{1}{2.725} *2}= 0.480

Step-by-step explanation:

Previous concepts

The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate). It is a particular case of the gamma distribution". The probability density function is given by:

P(X=x)=\lambda e^{-\lambda x}, x>0

And 0 for other case. Let X the random variable of interest:

X \sim Exp(\lambda=\frac{1}{2.725})

Solution to the problem

We want to calculate this probability:

P(X >2)

And we can calculate this with the complement rule like this:

P(X>2) = 1-P(X

And using the cdf we got:

P(X>2) = 1- [1- e^{-\lambda x}] = e^{-\lambda x} = e^{-\frac{1}{2.725} *2}= 0.480

8 0
3 years ago
Por favor me pueden ayudar
scoray [572]
It is 10 because you subtract 10 from 36 then you get 20 the the half of 20 is 10. the answer is 10. la respuesta es 10.(diez)
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4 years ago
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