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katrin [286]
3 years ago
11

Which statement accurately describes how to perform a 90° counterclockwise rotation of point A (−1, −2) around the origin? Creat

e a circle with point A as its center and a radius of the origin and point A, then locate a point on the circle that is 90° clockwise from point A. Create a circle with point A as its center and a radius of the origin and point A, then locate a point on the circle that is 90° counterclockwise from point A. Create a circle with the origin as its center and a radius of the origin and point A, then locate a point on the circle that is 90° clockwise from point A. Create a circle with the origin as its center and a radius of the origin and point A, then locate a point on the circle that is 90° counterclockwise from point A. ​

Mathematics
2 answers:
Anastaziya [24]3 years ago
8 0

Answer:

last one

Step-by-step explanation:

You are swinging A(-1,-2) around the center which in this case is the origin. Keep in mind that points on a circle all have a equal distance from the origin.  We don't want the distance from the center to change.

We want the center of that circle to be the origin.

So the answer is the last one:

"Create a circle with the origin as its center and a radius of the origin and point A, then locate a point on the circle that is 90° counterclockwise from point A. ​"

SOVA2 [1]3 years ago
5 0

Answer:

Option D.

Step-by-step explanation:

We need to perform a 90° counterclockwise rotation of point A (−1, −2) around the origin.

In rotation, the point and its image are equidistant from the center of rotation.

We know that all the points on a circle are equidistant from the center.

Steps for 90° counterclockwise rotation of point A (−1, −2) around the origin are:

1. Create a circle with the origin as its center and a radius of the origin and point A.

2. Locate a point on the circle that is 90° counterclockwise from point A.

Therefore, the correct option is D.

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A certain chalkboard manufacturer determines that their largest blackboard model has a mean length of 5.00 m and a standard devi
Igoryamba

Answer:

23 chalkboards

Step-by-step explanation:

Given:

Mean length = 5 m

Standard deviation = 0.01

Number of units ordered = 1000

Now,

The z factor = \frac{\textup{x - Mean}}{\textup{standard deviation}}

or

The z factor = \frac{\textup{4.98 - 5}}{\textup{0.01}}

or

Z = - 2

Now, the Probability P( length < 4.98 )

Also, From z table the p-value = 0.0228

therefore,

P( length < 4.98 ) = 0.0228

Hence, out of 1000 chalkboard ordered (0.0228 × 1000) = 23 chalkboard are likely to have lengths of under 4.98 m.

7 0
3 years ago
Please help, thank you!
andrew11 [14]

Answer:

B

Step-by-step explanation:

11 13 18 19 22 25 29 32 37 37 38

find the median (25)

with 11,13,18,19,22 find the middle for that (18) Q1

with 29,32,37,37,38 find the middle for that (37)Q3

Q3-Q1

37-18=19

7 0
3 years ago
Simplify the following by removing the brackets: a (b-c)+d (b-c)<br>​
netineya [11]

Answer:

ab - ac + db - dc

Step-by-step explanation:

you distribute the variables inside the parenthesis

4 0
2 years ago
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jonny [76]
The answer is
C = 4 ÷ 1/5
6 0
3 years ago
The function g(x) = \frac{1}{2}\left| {x} \right|g(x)= 21​ ∣x∣ is a transformation of the absolute value parent function. Which
Alchen [17]

Answer:

A

Step-by-step explanation:

From what we have , it is expected that the parent function is a v-shaped graph that starts from the origin

The expected equation parent function should be;

y = |x|

Now, moving on, the transformed function is 1/2 of the parent function

This shows a direct compression of the initial partner function

So, it is expected that the transformed function is more compressed compared to the initial parent function

so, the correct choice of answer here is first option

6 0
3 years ago
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