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e-lub [12.9K]
3 years ago
10

4(x^2 - 5) + 2(3x^2 + 6)

Mathematics
2 answers:
Leona [35]3 years ago
7 0
= 10x^2 - 8


The process is in the picture down below.

Dmitriy789 [7]3 years ago
5 0

Answer:

=10x2−8

Step-by-step explanation:

4(x2−5)+2(3x2+6)

Distribute:

=(4)(x2)+(4)(−5)+(2)(3x2)+(2)(6)

=4x2+−20+6x2+12

Combine Like Terms:

=4x2+−20+6x2+12

=(4x2+6x2)+(−20+12)

=10x2+−8

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A regular hexagon is inscribed in a circle with a diameter of 8 inches.
love history [14]

Answer:

b) 41.6 square inches

Step-by-step explanation:

A regular hexagon is inscribed in a circle with a diameter of 8 inches.

Step 1

We find the radius

Radius = Diameter/2

= 8 inches/2 = 4 inches

a. What is the perimeter of the hexagon?

b. What is the area of the hexagon?

An hexagon has 6 sides

The number of angles in an hexagon is calculated as:

[(Number of sides - 2) x 180]

= (6 - 2) x 180 = 720 ÷ 6 = 120°

The hexagon into 6 equilateral triangles with 4 for each of its sides.

The area of one of the triangles:

Height = 2√3

- one triangle's area = (1/2)bh = (1/2)(4)(2√3) = 4√3

The area of the hexagon by multiplying the one triangle's area by 6:

6 x 4√3 = 24√3 square inches

= 41.569219382 square inches

Approximately = 41.6 square inches

3 0
2 years ago
Find the area hurry plss
erica [24]

Answer:

114m^2

Step-by-step explanation:

At first it looks like you can split this into 3 rectangles, but the easier way is to subtract the area that is cut out from the larger rectangle. In this image, we have an outer rectangle that measures 12m x 14m. In the middle, there is a 9x6 rectangular hole. Subtract the area of the hole from the total area of the rectangle.

Total area = 12 * 14 = 168

Area of hole = 6 * 9 = 54

Area left = Total area - Area of hole

              = 168 - 54

              = 114m^2

7 0
2 years ago
Read 2 more answers
What's 43.396 divided by 57.1? Still confused for this one :(
Anton [14]
0.76 is what my calculator said
4 0
3 years ago
Read 2 more answers
Which function represents g(x), a reflection of f(x) = 6across the y-axis?
Otrada [13]

Answer: D.) g(x) = 6(3)^{-x}


Step-by-step explanation: We are given an exponential function f(x).

g(x) is an exponential function that is being reflected across y-axis.

According to rules of transformations y=f(-x).

That is variable x is being multiplied by a negative sign.

In the given options g(x) = 6(3)^{-x}, the variable x is being multiplied by a negative sign.

Therefore, correct option is D option.


4 0
3 years ago
Read 2 more answers
Solve Systems of Equations Algebracallyy=x+2 y=-3x
Sphinxa [80]

y = x + 2

y = -3x

Do y = -3x in y = x + 2

y = x + 2

-3x = x + 2

-3x - x = 2

-4x = 2

x = -2/4

x = -1/2

Now put x = -1/2 in y = -3x

y = -3x

y = -3.(-1/2)

y = 3/2

5 0
3 years ago
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