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4 years ago

Factor k 2 + 8k + 15. (k + 1)(k + 15) (k + 8)(k + 7) (k + 3)(k + 5)

1 answer:

4 0

K² + 8k + 15
k² + 5k + 3k + 15
k(k) + k(5) + 3(k) + 3(5)
k(k + 5) + 3(k + 5)
(k + 3)(k + 5)
The answer is D.

      3x +   4
2x + 5|6x² + 23x + 20
   6x² + 15x
      8x + 20
      8x + 20
      0
The answer is C.

(5d² + 4d - 3) - (3d² - 2d + 4)
(5d² - 3d²) + (4d + 2d) + (-3 - 4)
2d² + 6d - 7
The answer is B.

4b² - 9
4b² + 6b - 6b - 9
2b(2b) + 2b(3) - 3(2b) - 3(3)
2b(2b + 3) - 3(2b + 3)
(2b - 3)(2b + 3)
The answer is C.

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Given M is the midpoint ABA. The coordinate of A are (-4,2) and the cordinates of M are (1,1). Find the coordinate of B. Choose

4vir4ik [10]

Answer:

The coordinate of B is (6,0)

Step-by-step explanation:

Given;

coordinate of A = (-4,2) = (x₁, y₁)

coordinate of M = (1,1)

let coordinate of B = (x₂, y₂)

Mid-point is given by;

$M = \frac{X_1 + X_2}{2} , \frac{Y_1 + Y_2}{2}\\\\M= (1,1)\\\\1,1 =\frac{X_1 + X_2}{2} , \frac{Y_1 + Y_2}{2}\\\\ \frac{X_1 + X_2}{2} = 1 ----equation (1)\\\\\frac{Y_1 + Y_2}{2} = 1 -----equation(2)\\\\Solving \ equation(1)\\\\\frac{-4+ X_2}{2} = 1\\\\-4+ X_2 = 2\\\\X_2 = 2+4\\\\X_2 = 6\\\\Solving \ equation(2)\\\\\frac{Y_1 + Y_2}{2} = 1\\\\\frac{2+ Y_2}{2} = 1\\\\2+Y_2 = 2\\\\Y_2 = 2-2\\\\Y_2 = 0\\\\B = (X_2, \ Y_2)\\\\B = (6, \ 0)$

Therefore, the coordinate of B is (6,0)

5 0

3 years ago

The difference between an open circle and a closed circle on a graph of an inequality.

Ilia_Sergeevich [38]

A closed circle means that value is included, and an open circle means that value is excluded.

Example:

x > 2 ---- Graphed with an open circle, everything greater than but not including 2

x ≤ 3 ------ Graphed with a closed circle, everything less than and including 3

3 0

3 years ago

kate buys 10 ticket to show. She also pays a 5$ parking fee. she spent $35 to see the show. What equation is this

Over [174]

Answer:

35 = 5 + 10x

Step-by-step explanation:

x = the ticket price.

Each ticket was $3

hope this helps :)

5 0

3 years ago

Read 2 more answers

The access code for a car's security system consists of sixsix digits. the first digit cannot be zerozero and the last digit mu

shutvik [7]

There are six digits. The first can be anything but 0. There are 9 other choices.
Are repetitions allowed? Is 999999 permitted.

Repetitions allowed.
9 * 10 * 10 * 10 * 10 * 5 The last digit must be odd.
450,000 <<<< answer.

No repetitions
Sorry this requires more thought.

7 0

3 years ago

What is the measure of the base in the triangle below?

lesantik [10]

Step-by-step explanation:

AC+CB+BA=180

2x+23+3x-8+4x+1=180

9x+16=180

9x=180-16

9x=164

x=164/9

x=18.2

5 0

2 years ago