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Brums [2.3K]
3 years ago
8

Solve for f(3). f(x) = 2x – 4

Mathematics
1 answer:
k0ka [10]3 years ago
4 0

Answer: 2

Step-by-step explanation:

All you need to do is plug in 3 for x

2(3)-4

6-4

=2

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What’s the answer to this question?
xenn [34]

Answer:idk

Step-by-step explanation:

7 0
3 years ago
A circle in the xy-plane has its center at the point (-6,1). If the point (7, 12) lies on the circle,
Delicious77 [7]

Answer:

radius ≈ 17.0 units

Step-by-step explanation:

The radius is the distance from the centre of the circle to a point on it.

Calculate the radius r using the distance formula

r = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = (- 6, 1) and (x₂, y₂ ) = (7, 12)

r = \sqrt{(7+6)^2+(12-1)^2}

  = \sqrt{13^2+11^2}

  = \sqrt{169+121}

   = \sqrt{290} ≈ 17.0 ( to the nearest tenth )

4 0
3 years ago
there are 239 people in the first six rows of a movie theater if the same number of peopkle are in the next six rows about how m
tester [92]

If the same number of people are in 6 rows, and we're asked to find how many people are in 12 rows, we can simply multiply that number by 2.

<h3>239 * 2 = 478</h3>
8 0
3 years ago
3. The area of a rectangular deck, in square meters, is given by the polynomial 40p2 + 24p.
lorasvet [3.4K]

Answer:

Length = 5p + 3

Perimeter = 26p + 6

Step-by-step explanation:

Given

Area = 40p² + 24p

Width = 8p

Solving for the length of deck

Given that the deck is rectangular in shape.

The area will be calculated as thus;

Area = Length * Width

Substitute 40p² + 24p and 8p for Area and Width respectively

The formula becomes

40p² + 24p = Length * 8p

Factorize both sides

p(40p + 24) = Length * 8 * p

Divide both sides by P

40p + 24 = Length * 8

Factorize both sides, again

8(5p + 3) = Length * 8

Multiply both sides by ⅛

⅛ * 8(5p + 3) = Length * 8 * ⅛

5p + 3 = Length

Length = 5p + 3

Solving for the perimeter of the deck

The perimeter of the deck is calculated as thus

Perimeter = 2(Length + Width)

Substitute 5p + 3 and 8p for Length and Width, respectively.

Perimeter = 2(5p + 3 + 8p)

Perimeter = 2(5p + 8p + 3)

Perimeter = 2(13p + 3)

Open bracket

Perimeter = 2 * 13p + 2 * 3

Perimeter = 26p + 6

4 0
4 years ago
What are the zeros for 3x^2 - 17x = -10? Below, you need to choose the correct factors and the correct zeros.
alexandr1967 [171]

Answer:

Step-by-step explanation:

3x²-17x=-10

3x²-17x+10=0

3x²-2x-15x+10=0

x(3x-2)-5(3x-2)=0

(3x-2)(x-5)=0

3x-2=0,x=2/3

x-5=0,x=5

7 0
3 years ago
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