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3 years ago

Please help I don’t understand

Mathematics

1 answer:

S_A_V [24]3 years ago

7 0

Answer:

QS is a triangle. Because QS are connected and split down the middle which made a triangle.

Step-by-step explanation:

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Why can you use cross products to solve the proportion 18/5 = x/100 for x ?

Tcecarenko [31]

Answer:

Yes, you can use cross products to solve for x in this proportion. Also, x is 360.

Step-by-step explanation:

Yes, you can use cross products to solve for x in that proportion.

Here's how you do it :

$\frac{18}{5} = \frac{x}{100}$

We cross product, getting :

18 * 100 = 5 * x

1800 = 5x

Divide by 5 on both sides to get x by itself.

360 = x

Yes, you can use cross products to solve for x in this proportion. Also, x is 360.

Hope this helps, please mark brainliest if possible. Have a great day.

4 0

3 years ago

1. ADEA has vertices D(8,4), E(2, 6), and F(3, 1). What are the vertices of the image after a dilation with a scale factor of 5

lubasha [3.4K]

Answer:

The vertices of the image are D' (40, 20), E' (10, 30), F' (15, 5)

Step-by-step explanation:

If the point (x, y) dilated by a scale factor k using the origin as a center of dilation, then its image is (kx, ky)

Let us use this rule to solve our question

∵ The vertices of ΔDEF are D (8, 4), E (2, 6), and F (3, 1)

∵ ΔDEF dilated by a scale factor 5

∴ k = 5

∵ The origin as the center of dilation

→ That means, multiply the coordinates of every point by 5

∴ D' = (8 × 5, 4 × 5)

∴ D' = (40, 20)

∴ E' = (2 × 5, 6 × 5)

∴ E' = (10, 30)

∴ F' = (3 × 5, 1 × 5)

∴ D' = (15, 5)

∴ The vertices of the image are D' (40, 20), E' (10, 30), F' (15, 5)

3 0

3 years ago

Twice the sum of a number and three

Kruka [31]

The answer will be 2(x+3)

8 0

3 years ago

The sum of two complementary angle

Goryan [66]

Complimentary are 90 °. Supplementary are 180°

8 0

3 years ago

A Web site defines a regular polygon as “a polygon with all sides the same length.” Is this definition valid?

olchik [2.2K]

In geometry, a polygon is called a regular polygon whose sides and interior angles are equal to each other.
The regular polygons of three and four sides are called equilateral triangle and square, respectively. For polygons of more sides, the regular term is added (regular pentagon, regular hexagon, regular octagon, etc).
Answer:
A. Yes, because all regular polygons fit this definition.

4 0

3 years ago

Read 2 more answers