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2 years ago

What is the area of this polygon?

Mathematics

2 answers:

Nuetrik [128]2 years ago

8 0

The middle is a square with side length of 12cm

Area of the square = 12 x 12 = 144 cm^2

There are 4 triangles with base of 13cm and height of 8 cm

Area of triangle = 1/2 x base x height

Area = 1/2 x 12 x 8 = 48cm^2 each

48 x 4 = 192 cm^2

Total area = 144 + 192 = 336 cm^2

lisabon 2012 [21]2 years ago

7 0

Answer:

Area of given polygon = 4(1/2 × 8 × 12) + 12²

4 × 48 + 144
192 + 144
336cm²

Hence, The area of the given polygon is 336 sq cm.

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Find the value of X?

daser333 [38]

Because we know the midpoint is in the middle, we know that both sides are equal.
So set both = to each other
4x - 1 = 3x + 3

add 1 to both sides

4x=3x+4

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3 years ago

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How do I write an equation for each parabolas?

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Step-by-step explanation:

In the first parabola it opens on the left and the equation of parabola can be expressed as,

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cause the parabola is horizontal and opens on the right.

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in horizontal component (x²) = (-) a (x-h)² + k

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3 years ago

You need a mean of at least 90 points to advance to the next round of the touch-screen trivia. What score in the fifth game will

lianna [129]

Answer:

At least 98 is needed in the 5th game

Step-by-step explanation:

The missing parameters are:

$Game\ 1 = 95$

$Game\ 2 = 91$

$Game\ 3 = 77$

$Game\ 4 =89$

$Mean = 90$ at least

Required

The score in game 5 to make you advance

Mean is calculated as:

$Mean = \frac{\sum x}{n}$

So, we have:

$Mean = \frac{95 + 91 + 77 + 89 + Game\ 5}{5}$

$Mean = \frac{352 + Game\ 5}{5}$

The mean must be at least 90.

So, we have:

$\frac{352 + Game\ 5}{5} \ge 90$

Multiply both sides by 5

$5 * \frac{352 + Game\ 5}{5} \ge 90 * 5$

$352 + Game\ 5 \ge 450$

Make Game 5 the subject

$Game\ 5 \ge450 - 352$

$Game\ 5 \ge 98$

At least 98 is needed in the 5th game

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3 years ago

George scored 70, 92, 70, 90, and 95 on five physics tests. The mean, median, and mode of his scores are given below. Mean = 83.

oksano4ka [1.4K]

Answer:

mean; the average of George's scores is the mean = 83.4

Step-by-step explanation:

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Answer:

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To start calculating, we first need to make some proof.

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∠BED=∠CFD

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Thus, the measure of CF is approximately 13, alternative D.

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3 years ago