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vaieri [72.5K]
3 years ago
14

I don’t really understand how you figure out the points of a figure on rotation, please explain!

Mathematics
1 answer:
Basile [38]3 years ago
6 0
To rotate a figure
90 degrees(-y,x)
180 degrees(-x,-y)
270 degrees(y,-x)
If your original point is (1,2) or example and you want to rotate it say 270 degrees the final point would be (2,-1)
Hope this helped!!!!!
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Gary wants to buy a bicycle that usually sells for $74.99. The store is having a sale and all merchandise is discounted by 25%.
marusya05 [52]

Answer:

A

Step-by-step explanation:

4 0
3 years ago
The area of a rectangle gets reduced by 9 sq. units,if its length is reduced by 5 units and Breadth is increased by 3 units.If w
Scilla [17]

Let the length and breadth of the rectangle be x and y.

Area of rectangle is A = xy

Therefore, the new length will be = x-5

Therefore, the new breadth will be = y + 3

So new area will be xy-9

Now the new relation will be (x+3)(y+2)=xy+67

.

Cross – multiplication method–

\dfrac{x}{{{b_1}{c_2} - {b_2}{c_1}}} =\dfrac{y}{{{a_2}{c_1} - {c_2}{a_1}}} = \dfrac{1}{{{a_1}{b_2} - {a_2}{b_1}}} || x = \dfrac{{{b_1}{c_2} - {b_2}{c_1}}}{{{a_1} {b_2} - {a_2}{b_1}}} y = \dfrac{{{a_2}{c_1} - (c_2}{a_1}}}{{{a_1}{b_2}-{a_2}{b_1}}}\\

\Rightarrow \dfrac{x}{{305 - ( - 18)}} =\dfrac{y}{{ - 12 - ( - 183)}} = \dfrac{1}{{9 - 10)}}\\\

\Rightarrow \dfrac{x}{{323}} = \dfrac{y}{{171}} = \dfrac{1}{{19}} \\\Rightarrow x = 17, y = 9 \\

Therefore, the length is 17 and breadth is 9.

5 0
3 years ago
a bike wheel is 26 inches in diameter. what is the bike wheel's diameter in millimeters (1 inch = 25.4 millimeters)?
Setler [38]
If you would like to know the bike wheel's diameter in millimeters, you can calculate this using the following steps:

26 inches in diameter
1 inch = 25.4 millimeters
26 inches = 26 * 1 inch = 26 * 25.4 millimeters = 660.4 millimeters

The correct result would be 660.4 millimeters in diameter.
5 0
3 years ago
Read 2 more answers
Evaluate the expression 2(8-4)^2 - 10 divided by 2<br><br> A) 11<br> B)26<br> C)56<br> D)59
const2013 [10]
The answer is A. 11.

\frac{2(8-4) ^{2} -10}{2}
\frac{2(4) ^{2} -10}{2}
\frac{2(16)-10}{2}
\frac{32-10}{2}
\frac{22}{2}
11

I hope this was helpful.
7 0
3 years ago
Read 2 more answers
What is the area of the triangle pls help
OLga [1]

Answer:

Area of a triangle =1/2bh.

1/2×8×10=40cm^2.

8 0
3 years ago
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