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2 years ago

K12 I will mark Brainlest

Mathematics

1 answer:

kupik [55]2 years ago

8 0

The area of the given triangle is: 480 m².

<h3>What is the Area of a Triangle?</h3>

Area = 1/2(base × height)

Given:

Base = 64 m

Height = 15 m

Plug in the values into the area formula for triangle:

Area = 1/2(64 × 15)

Area = 1/2(960)

Area = 480 m²

Thus, the area of the given triangle is: 480 m².

Learn more about area of triangle on:

brainly.com/question/21735282

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Simplify 8c- 4d + 8d +9c - 18c

neonofarm [45]

-c +4d

Step-by-step explanation:

$8c - 4d + 8d + 9c - 18c$

Group like terms and simplify

$8c + 9c - 18c - 4d + 8d \\ - c + 4d$

4 0

3 years ago

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Help quick ❗️❗️ Which sequence of transformations will change did your PQRS to figure P’Q’R’S’?

babymother [125]

Answer:

Counterclockwise rotation about the origin by 90° followed by reflection over the Y-axis ⇒ answer (D)

Step-by-step explanation:

* Lets revise the reflection and the rotation of a point

- If point (x , y) reflected across the x-axis

∴ Its image is (x , -y)

- If point (x , y) reflected across the y-axis

∴ Its image is (-x , y)

- If point (x , y) rotated about the origin by angle 90° counter clockwise

∴ Its image is (-y , x)

- If point (x , y) rotated about the origin by angle 90° clockwise

∴ Its image is (y , -x)

- If point (x , y) rotated about the origin by angle 180°

∴ Its image is (-x , -y)

* There is no difference between rotating 180° clockwise or

anti-clockwise around the origin

- In our problem

# The vertices of the original figure are:

P(1 , -3) , Q (3 , -2) , R (3 ,-3) , S (2 , -4)

# The vertices of the image are:

P' (-3 , 1) , Q' (-2 , 3) , R' (-3 , 3) , S' (-4 , 2)

∵ x and y are switched

∴ The figure is rotated about origin by 90°

∵ The signs of the x-coordinates and the y-coordinates

didn't change

∴ The rotation is followed by reflection, to know about which

axis we must to find the images after the rotation

∵ P (1 , -3) ⇒ after rotation 90° counter clockwise is (3 , 1)

∵ Q (3 , -2) ⇒ after rotation 90° counter clockwise is (2 , 3)

∵ R (3 , -3) ⇒ after rotation 90° counter clockwise is (3 , 3)

∵ S (2 , -4) ⇒ after rotation 90° counter clockwise is (4 , 2)

* The images are P' (-3 , 1) , Q' (-2 , 3) , R' (-3 , 3) , S' (-4 , 2)

- The sign of x-coordinates of all of them changed

∴ The rotation followed by reflection over the y-axis

* The answer is ⇒ Counterclockwise rotation about the origin

by 90° followed by reflection over the Y-axis

7 0

3 years ago

Find the area of each figure. round to the hundredths place when necessary

notsponge [240]

Answer:

115.48 $m^{2}$

Step-by-step explanation:

This shape can be split into two distinct shapes

Two halves of a semi circle, and a rectangle in between

Circle:

Putting both halves of the semi circle together will give you a full circle. The diameter of the circle is given (7m).

The area of a circle is A = π $r^{2}$

The radius, r, is half of the diameter, so 7 / 2 = 3.5m

A = π $r^{2}$

A = π * $3.5^{2}$

A = 38.38 $m^{2}$

Rectangle:

The area of a rectangle is A = h b

The height, h, is known at 7m

The base, b, can be found by removing the length from the dot to the end of the semi circles. This length is the radius of the semi circles, 3.5m

Removing the radius from the total length given

18 - 3.5 - 3.5 = 11m

The base is 11m

A = h b

A = 7 * 11 = 77 $m^{2}$

Total Area = Circle area + Rectangle area

Total Area = 38.38 + 77 = 115.48 $m^{2}$

6 0

3 years ago

Equivalent fraction of 9/11

quester [9]

Answer:

1822

Step-by-step explanation:

The fraction 1822 is equal to 911 when reduced to lowest terms.

is equivalent to 9

because 9 x 2 = 18 and 11 x 2 = 22

is equivalent to 9

because 9 x 3 = 27 and 11 x 3 = 33

is equivalent to 9

because 9 x 4 = 36 and 11 x 4 = 44

8 0

3 years ago

Read 2 more answers

How many hundredths are in 45.972

dsp73

For this case we have the following number:

45.972

By definition we have to:

hundredths place: place located two digits to the right of the decimal point.

We have then that for this case the number located in hundredths place is:

Answer:

there are 7 hundredths in 45.972

6 0

2 years ago

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