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Anna007 [38]
3 years ago
14

How do i simplify this answer (x+2)(x+1)

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
5 0

Answer:

x^2+3x+2

Step-by-step explanation:

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Which expression is a difference of squares with a factor of 2x + 5? 4x2 + 10 4x2 – 10 4x2 + 25 4x2 – 25
Shtirlitz [24]

Answer:

  4x^2 -25

Step-by-step explanation:

The other factor of the difference of squares is the "conjugate" of the given one: (2x -5). Then their product is ...

  (2x +5)(2x -5) = (2x)^2 -(5)^2 = 4x^2 -25

5 0
3 years ago
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A recent survey found that 70% of all adults over 50 wear
lubasha [3.4K]

Answer:

There is an 84.97% probability that at least six wear glasses.

Step-by-step explanation:

For each adult over 50, there are only two possible outcomes. Either they wear glasses, or they do not. This means that we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 10, p = 0.7

What is the probability that at least six wear glasses?

P(X \geq 6) = P(X = 6) + `P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10) = 0.8497

There is an 84.97% probability that at least six wear glasses.

5 0
3 years ago
A linear function has a slope of 3 and crosses the y- axis at 7. What is the equation of the line?
Anarel [89]

Answer:

y=3x+7

Step-by-step explanation:

cause bla bla bla and bing bong bang thats how

6 0
2 years ago
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Which statement correctly describes the relationship between the graph of f(x)=4x and the graph of g(x)=f(x)+3
Leya [2.2K]
<span>The graph of g(x) is the graph of f(x)translated 3 units up.</span>
3 0
3 years ago
2a+b=15.7 what’s the possible values of b
Fiesta28 [93]

Answer:

b = 15.7 -2a

Step-by-step explanation:

You are asking us to solve for b

2a +b = 15.7

Subtract 2a from each side

2a-2a+b = 15.7 -2a

b = 15.7 -2a

4 0
3 years ago
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