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3 years ago

I'm stuck on this question, please help. Thank you!!!

Mathematics

2 answers:

anastassius [24]3 years ago

6 0

Let's multiply each of the four squares, one by one.

In blue, we see the dimensions are x by x. x times x = x^2

In pink, we see the dimensions are 9 by x. x times 9 = 9x

In green, the dimensions are x by 3. 3 times x = 3x

And finally, yellow's dimensions are 3 by 9. 3 times 9 = 27

We can now just add all these areas to find the total area:

x^2 + 12x + 27

lord [1]3 years ago

4 0

Answer:

x²+12x+27

hope it helps. ......

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If 12+15=7 11+14=5 18+25=13 what is 28+36 =?

Furkat [3]

Answer:

Step-by-step explanation:

you only add the last numbers

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3 years ago

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Henry counted units to find the distance between two points. For which pair of points could he have done this ? Select all that

Flura [38]

Options:

(–3, 5) and (–2, 5) (–3, 5) and (–9, 3)

(5, 3) and (9, 3) (5, –9) and (3, –5)

(2, 3) and (7, 3)

Answer:

(–3, 5) and (–2, 5)

(5, 3) and (9, 3)

(2, 3) and (7, 3)

Step-by-step explanation:

To do this, have to compare the both x and both y coordinates of the points.

If the x coordinates are equal or the y coordinates are equal, then that option is true

For (a): (-3,5) and (-2,5)

The y coordinates are the same:

i.e.

$y_1 = y_2 = 5$

This option is true

For (b): (-3, 5) and (-9, 3)

None of the coordinates are the same;

i.e.

$x_1 \ne x_2$

$y_1 \ne y_2$

Hence, this option is false.

For (c): (5, 3) and (9, 3)

The y coordinates are the same:

i.e.

$y_1 = y_2 = 3$

This option is true

For (d): (5, -9) and (3, -5)

None of the coordinates are the same;

i.e.

$x_1 \ne x_2$

$y_1 \ne y_2$

Hence, this option is false.

(2, 3) and (7, 3)

The y coordinates are the same:

i.e.

$y_1 = y_2 = 3$

This option is true

3 0

3 years ago

1 - (9 – 4) : 5 = Please someone help

Norma-Jean [14]

Answer:

-4 = 5

Step-by-step explanation:

9-4=5

1-5=-4

-4:5

3 0

4 years ago

Find the surface area of a regualar pyramid that is a pentagonal pyramid with the area of a base is is 440.4mm and a height of 2

Inessa [10]

Answer:

1240.4 mm²

Step-by-step explanation:

The surface area of a pyramid = Area of the all sides + Area of base

Each side is a triangle.

With a regular pentagonal pyramid, the area of each triangle is

$A = \frac{1}{2}\times\text{base}\times\text{slant height}$

For the 5 triangles,

$A = 5\times\frac{1}{2}\times\text{base}\times\text{slant height} = \frac{1}{2}\times5\times\text{base}\times\text{slant height}$

Substituting given values,

$A = 5\times\frac{1}{2}\times16\ \text{mm}\times20\ \text{mm} = 800 \text{mm}^2$

Area of base = 440.4 mm²

Surface area of a pyramid = 800 + 440.4 mm² = 1240.4 mm²

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3 years ago

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Vaselesa [24]

It’s A. 9 the equation is y=9x+0

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3 years ago

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I'm stuck on this question, please help. Thank you!!! ​

I'm stuck on this question, please help. Thank you!!!