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pishuonlain [190]

2 years ago

15

x^2+6x+4 Which of the following is equivalent to the expression above? Justify your answer. A) (x+3)^2+5 B) (x+3)^2-5 C) (x-3)^2

+5 D) (x-3)^2-5

1 answer:

vaieri [72.5K]2 years ago

4 0

Answer:

B) ( x+3)² - 5

Step-by-step explanation:

Given expression

x²+6x+4

Adding '9' and subtracting '9' of given expression

⇒ x² + 2 (3) (x) +(3)² -(3)² +4

(a + b)² = a² + 2 a b + b²

⇒ ( x+3)² - 9 +4

⇒ ( x+3)² -5

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rosijanka [135]

Answer:

(-3,3).

Step-by-step explanation:

The given points are (-6,-3) and (-1,7).

We need to find the coordinates of the point, which divides the line segment in 3:2.

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$\left(\dfrac{mx_2+nx_1}{m+n},\dfrac{my_2+ny_1}{m+n}\right)$

Using this formula, we get

$\left(\dfrac{3(-1)+2(-6)}{3+2},\dfrac{3(7)+2(-3)}{3+2}\right)$

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3 years ago

In a large Introductory Statistics lecture hall, the professor reports that 55% of the students enrolled have never taken a Calc

Anna35 [415]

Answer:

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Step-by-step explanation:

We have these following probabilities:

A 55% that a student hast never taken a Calculus course.

A 32% probability that a student has taken one semester of a Calculus course.

A 100-(55+32) = 13% probability that a student has taken 2 or more semesters of Calculus.

a) two or more semesters of Calculus?

There is a 13% probability that a student has taken 2 or more semesters of Calculus.

b) some Calculus?

At least one semester.

So there is a 32+13 = 45% probability that a student has taken some calculus.

c) no more than one semester of Calculus?

At most one semester.

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5 0

3 years ago

Read 2 more answers

For brainiest:):):)):):):):):):):)

Effectus [21]

Answer:

1/7

Step-by-step explanation:

There is a 1/7 chance because out of all 7 letters and times you could have chosen a different letter, you chose x which occurs once in the problem.

Hope this helps!

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2 years ago

A factory used 99.19 kilograms of tomatoes to make 7 batches of pasta sauce. What quantity of tomatoes did the factory put in ea

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Answer:

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99.19/7

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2 years ago

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jeka57 [31]

Answer:

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2 years ago