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Leona [35]
3 years ago
10

Three students sit in the first row. In the second row, 3 students sit behind each of those students, and so on. Write an expres

sion with exponents to show how many students sit in the third row? How many total students are seated?
Please help, I don't understand this. You get 65 points!
Mathematics
1 answer:
musickatia [10]3 years ago
6 0

Answer:

15

Step-by-step explanation:

Dont need an explanation really, but if there are 5 rows, with 3 each in them, all you need to do is 3x5.

15.

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In the x-y plane, what is the y- intercept of the graph of the equation y=6 (x-1/2) (x+3)
Ivenika [448]

The y-intercept on the x-y plane is (0, -9).

<h3 /><h3>How to get the y-intercept?</h3>

To get the y-intercept we just need to evaluate in x = 0.

Here we have:

y = 6*(x - 1/2)*(x + 3)

Evaluating the given equation in x = 0 we get:

y = 6*(0 - 1/2)*(0 + 3) = -9

Then the y-intercept on the x-y plane is (0, -9).

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6 0
2 years ago
Which number could be added to
Arturiano [62]

The number which could be added to both sides of the equation to complete the square is; -2.25.

<h3>Which number could be added to both sides of this quadratic equation to complete the square?</h3>

The quadratic equations give in the task content is; 1=x²-3x. Hence, to express the equation by completing the square method; we have;

1 - 2.25 = (x -3/2)² - 2.25

Hence, the number which should be added to both sides of the equation is; -2.25.

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3 0
2 years ago
If Ill m, solve for x.<br> (8x - 71)<br> (5x + 7)<br> x =
horsena [70]

Answer:

x=26

Step-by-step explanation:

by definition of alternate exterior angle rule 8x -71 = 5x +7

What you want to do is get your X's on one side I recommend subtracting 5x so that you don't have to deal with negative values.

8x-5x-71=5x-5x+7

3x-71=7

add 71 to both sides the goal now is trying to get by itself

3x-71+71=7+71

3x=78

now divide both sides by 3

3x/3=78/3

x=26

8 0
3 years ago
Read 2 more answers
You bought a 5 pound turkey for $14.45. What is the cost for one pound?
sweet-ann [11.9K]

Answer:

$2.89

Step-by-step explanation:

$14.45/ 5= 2.89

3 0
3 years ago
Help please and thanks! I always give brainliest!
Tju [1.3M]

Answer:

x=18, y=9

Step-by-step explanation:

The lines of y+3 and 12 look equal to each other. So do x-3 and 15. Because of this, we set each equal to each other and solve.

solving for x:

x-3 = 15

+ 3     +3

x=18

solving for y:

y+3=12

- 3    -3

y=9

hope this helps!!!

6 0
2 years ago
Read 2 more answers
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