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Scrat [10]
3 years ago
15

Simplify completely quantity 2 x squared plus 20 x plus 32 all over x squared minus 2 x minus 80

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
4 0

Answer:  Simplified form will be

\frac{2(x+2)}{(x-10}

Explanation:

Since we have given that

\frac{2x^2+20x+32}{x^2-2x-80}

and we need to simplify it,

First we take 2 as common factor from the numerator,

So, it becomes,

\frac{2(x^2+10x+16)}{x^2-2x-80}

By using splitting the middle terms, we get

\frac{2(x^2+8x+2x+16)}{x^2-10x+8x-80}\\\\=\frac{2[(x(x+8)+2(x+8)]}{x(x-10)+8(x-10)}\frac{2(x+8)(x+2)}{(x-10)(x+8)}\\\\=\frac{2(x+2)}{(x-10}

Hence, Simplified form will be

\frac{2(x+2)}{(x-10}



erastovalidia [21]3 years ago
3 0
The answer is 2(x+2)/x-10
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Answer:

a)  P(2)=0.270

b) P(X>3)=0.605

c)  P=0.410

Step-by-step explanation:

We know that customers arrive at a grocery store at an average of 2.1 per minute. We use the  Poisson distribution:

\boxed{P(k)=\frac{\lambda^k \cdot e^{-\lambda}}{k!}}

a)  In this case: \lambda=2.1

P(2)=\frac{2.1^2 \cdot e^{-2.1}}{2}\\\\P(2)=0.270

Therefore, the probability is P(2)=0.270.

b)  In this case: \lambda=2\cdot 2.1=4.2

P(X>3)=1-P(X\leq 3)\\\\P(X>3)=1-\sum_{x=0}^3 \frac{4.2^x \cdot e^{-4.2}}{x!}\\\\P(X>3)=1-0.395\\\\P(X>3)=0.605

Therefore, the probability is P(X>3)=0.605.

c)  We know that two customers came in in the first minute. That is why we calculate the probability of at least 5 customers entering the other 2 minutes.

In this case: \lambda=2\cdot 2.1=4.2

P(X\geq 5)=1-P(X

Therefore, the probability is P=0.410.

4 0
3 years ago
Nicole is playing a video game where each round lasts 3/44 of an hour. She has scheduled 3 3/4 hours to play the game. How many
Marrrta [24]
Let's not think about the problem, let's think about the fractions and dividing. We're are trying to find how many sets of 3/44 are in 3 3/4. We need to divide. Using keep change and flip, we can divide successfully.
Let's make sure the first fraction is improper.
15/4÷3/44=?
Keep, Change, and Flip.
15/4×44/3
660/12
Let's simplify.
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aleksandrvk [35]

Answer: Tigers = 46     Bears = 44

<u>Step-by-step explanation:</u>

Let x represent the numbers of points scored by the Bears.

then x + 2 is the number of points scored by the Tigers.

Bears + Tigers = Total

  x      +  x + 2  =   90

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3 years ago
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Answer:

since the sum of all angles of a triangle is 180°

Step-by-step explanation:

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7y=35°

y=5°

4 0
2 years ago
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