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ziro4ka [17]
3 years ago
6

What is a simple way to rotate a shapes or points

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
3 0

When rotating points and shapes on a coordinate plane, you can use these simple methods:

90 degree rotation clockwise: convert (x, y) to (y, -x).

Example: (2, -4) --> (4, 2)

180 degree rotation clockwise: convert (x, y) to (-x, -y).

Example: (2, 4) --> (-2, -4).

270 degree rotation clockwise: convert (x, y) to (-y, x).

Example: (4, 2) --> (-2, 4)

360 degree rotation: This changes nothing. This basically means that the figure spins in a full circle only to return to its previous position.

Notes:

-Don't be spooked whenever you see a question that says to rotate an object 90 degrees counterclockwise. This is the exact same thing as a 270 degree rotation clockwise.

Example: (4, 2) rotated 270 degrees clockwise = (2, -4). (4, 2) rotated 90 degrees counterclockwise = (2, -4).

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alukav5142 [94]
3 4/10 is my answer



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3 years ago
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Can someone please help me with this question and show the steps?
Katena32 [7]
<h2>Answer:</h2>

D. \ 408in^2

<h2>Step-by-step explanation:</h2>

This is a square pyramid because it's a solid having a square base. The point up the pyramid is called the apex and is directly above the middle of the square base. The surface area of a solid is the total area of its outer surface. If we unfold this pyramid, we'll get one square and four identical triangles. So the surface are can be calculated as follows:

s=s_{square}+4s_{triangle}

FOR THE SQUARE:

s_{square}=L^2 \\ \\ L=12in \\ \\ s_{square}=12^2=144in^2

FOR THE TRIANGLE:

s_{triangle}=\frac{bh}{2} \\ \\ b=12in \\ h=11in \\ \\ s_{triangle}=\frac{12\times 11}{2}=66in^2

Finally:

s=s_{square}+4s_{triangle} \\ \\ s=144+4(66) \\ \\ s=144+264 \\ \\ \boxed{s=408in^2}

7 0
3 years ago
12x-6&gt;14x-2 graph it
Jet001 [13]

Answer: 12x-6=14x-2

We move all terms to the left:

12x-6-(14x-2)=0

We get rid of parentheses

12x-14x+2-6=0

We add all the numbers together, and all the variables

-2x-4=0

We move all terms containing x to the left, all other terms to the right

-2x=4

x=4/-2

x=-2

Step-by-step explanation:

7 0
3 years ago
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CAN SOMEONE PLEASE HELP MEEEE!!!!
pantera1 [17]

<u>Question</u><u>:</u>

In triangle JKL, the measure of angle L = 90°, KJ = 37, LK = 12, and JL = 35. What ratio represents the cosine of angle J?

__________________________________________________

<u>Solution</u><u>:</u>

The triangle JKL should look like that in the attachment.

Cosine of J = adjacent side/hypotenuse

= LJ/KJ

= 35/37

7 0
3 years ago
Please me help with this question!ASAP!
Sloan [31]

$110,000

Marketers = 50000

Engineers = 80000

Managers = X

Average = sum/number of values

Sum = 50000 + 80000 + X

Number of values = 3

80000 = (50000 + 80000 + X)/3

Solve to find X

Multiply both sides by 3

240000 = 50000 + 80000 + X

Get X on its own by subtracting the salaries.

240000 - 80000 - 50000 = X = 110000

7 0
3 years ago
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