Solve for x. x² + 6x + 9 = 12 ​​ ​ x=−9±4 √3 ​ ​​ ​ x=−3±4 √3 ​ ​ ​ x=−9±2 √3 ​ x=−3±2 √3

Answers

Answer 1
Answer:

Answer:

9

Step-by-step explanation:

x2+3x+3x+9=12

(x+3)(x+3)=12

x+3=12

x=9


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4x + y =1x + 2y = 9

Which equation can pair with 3x + 4y = 8 to create a consistent and independent system?

Answers

There isn't any choices given in this problem but I can give you a tip to answer these kinds of problem. When you say independent, it means that the equation cannot be algebraically altered to result to 3x + 4y = 8. So the equation 6x + 8y = 16 is not an independent equation since when you divide each side by 2 it will result to 3x + 4y =8. You get the idea. 

Answer:

6x - 3y = 2

Step-by-step explanation:

took  test on edg 2021

How to convert improper fraction to a mixed or whole number (reduce to lowest terms): 24/9 how to convert improper fraction to a mixed number 24/9
how to convert improper fraction to a mixed (reduced to lowest terms)
change to an improper fraction: 4 2/3=?

Answers

How to convert improper fraction to a mixed or whole number (reduce to lowest terms): 24/9

#3 AB and AD are tangent to the circle centered at point C. Find the value of x. *show your work plz i need help

Answers

Answer: x=4

Step-by-step explanation:

tangent lines from the same point to a circle are congruent in length, so we can say that

5x+8 = 8x-4

5x -5x +8 = 8x - 5x -4

8 = 3x - 4

8+4 = 3x -4 + 4

3x = 12

3x/3 = 12/3

x=4

What is tangent in trigonometry?

Tangent Meaning in Trigonometry

In trigonometry, the tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side. In other words, it is the ratio of sine and cosine function of an acute angle such that the value of cosine function should not equal zero.

Learn more about Tangent at brainly.com/question/17040970

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Answer:

x=4

Step-by-step explanation:

tangent lines from the same point to a circle are congruent in length, so we can say that

5x+8 = 8x-4

5x -5x +8 = 8x - 5x -4

8 = 3x - 4

8+4 = 3x -4 + 4

3x = 12

3x/3 = 12/3

x=4

Which graphs represents the compound inequality x<5/4 or x> 5/2?

Answers

Answer: B

Step-by-step explanation:

Looking at the inequalities, both are ≤ and ≥. That means the x is not only greater or less than, but they are also equal to the number. With this fact, we can eliminate D since D has open circles.

Orr problem has 2 separate inequalities. Both are doing in different directions, hence the ≤ and ≥. This makes B automatically our answer. We can check by graphing each of the inequalities on the number line.

x≤5/4

We know that 5/4=1.25. We start at 1.25. Then the inequality tells less than or equal to. Since it is less than, we would travel to the left, where the numbers get smaller and smaller.

x≤5/2

5/2=2.5 We start at 2.5. The inequality tells us greater than or equal to. This means we have to travel to the right, where the number gets larger and larger than 2.5.

Solve the equation. 20 = –d + 16A. 4

B. –10

C. –6

D. –4

Answers

Hello there
The correct answer to this question would be D: negative 4

This is because the negatives from negative 4 and negative d would cancel each other out, to make it a positive 4, resulting in the equation being: 20 = 4 + 16 ,  which is true

I hope this helped ^^

The average reading score on a certain test is given by y=0.150x +255.34 where x is the number of years past 1970 . In what year would the average reading score be 259.24 if this model was accurate

Answers

Answer:

The average was 259.24 in 1996.

Step-by-step explanation:

In order to find the year that the average, "y", is 259.24 we need to apply this value on the given expression, as done below:

259.24 = 0.15*x + 255.34\n0.15*x = 259.24 - 255.34\n0.15*x =3.9\nx = (3.9)/(0.15)\nx = 26

The average was 259.24 after 26 years, therefore it was in 1996.