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Irina18 [472]
4 years ago
14

A triangle is rotated 90 abput the origin. which rule describe the transformation

Mathematics
1 answer:
Usimov [2.4K]4 years ago
3 0
Rotation 90 degree around the origin counterclockwise is  formula is (x,y) changes to (-y,x) but rotation 90 degree clockwise is (y,-x)
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HELP!!!!
OverLord2011 [107]

Answer:

Step-by-step explanation:

You just need the distance formula here.  It's very simple to follow:

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

which, for us, looks like this:

d=\sqrt{(13-4)^2+(19-7)^2} and

d=\sqrt{9^2+12^2} and

d=\sqrt{81+144} and

d=\sqrt{225} so

d = 15

4 0
3 years ago
a meter is a unit of length approximately equal to 39.37 inches. if someone is 1.98 meters tall what is their approximate height
galina1969 [7]
78 inches is the correct answer.

5 0
3 years ago
Read 2 more answers
What is the value of the expression?<br><br> 25+310−79
Liula [17]
256 is the value


REMEMBER PEMDAS
4 0
3 years ago
Read 2 more answers
Evaluat the exression when <br> X is equal to3<br><br> X+1
Gemiola [76]
Just substitute 3 for x, and it’s 3+1=4. Your answer is 4!
4 0
3 years ago
Simplify expressions
charle [14.2K]
<h3>a) \frac{2}{5}  \div (  - \frac{3}{4} )</h3><h3>■Dividing a positive and a negative equals a negative: (+)÷(-)=(-)</h3>

<h2>-  \frac{2}{5}  \div  \frac{3}{4}</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>

<h2>-  \frac{2}{5}  \times  \frac{4}{3}</h2><h3>■Multiply the fractions</h3>

<h2>-  \frac{8}{15}</h2>

<h3>Hence, Quotient =-  \frac{8}{15}</h3>

<h3>b) 0.4 \div  ( - 0.75)</h3><h3>■Convert the decimals into a fractions</h3>

<h2>\frac{2}{5}  \div ( -  \frac{3}{4} )</h2><h3>■Dividing a positive and a negative equals a negative: (+)÷(-)=(-)</h3>

<h2>-  \frac{2}{5}  \div  \frac{3}{4}</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>

<h2>-  \frac{2}{5}  \times  \frac{4}{3}</h2><h3>■Multiply the fractions</h3>

<h2>-  \frac{8}{15}</h2><h3>Hence, Quotient is -  \frac{8}{15}</h3>

<h3>c)-  \frac{2}{5}  \div  \frac{3}{4}</h3><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>

<h2>-  \frac{2}{5}  \times  \frac{4}{3}</h2><h3>■Multiply the fractions</h3>

<h2>-  \frac{8}{15}</h2><h3>Hence, The Quotient is -  \frac{8}{15}</h3>
4 0
3 years ago
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