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Karo-lina-s [1.5K]
3 years ago
7

(b) Factorise fully 9b-3b squared

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

Answer:

Step-by-step explanation:

b(9-3)

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Gragh the image of the figure after a dilation with a scale factor of 1/4 centered at (5, -5) please help
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Answer:

See attached diagram

Step-by-step explanation:

Triangle ABC has vertices A(9,3), B(-7,-5) and C(-3,7).

The dilation with a scale factor of 1/4 centered at (5, -5) has the rule

(x,y)\rightarrow \left(\dfrac{1}{4}x+\dfrac{15}{4},\dfrac{1}{4}y-\dfrac{15}{4}\right)

Then

A(9,3)\rightarrow A'\left(\dfrac{1}{4}\cdot 9+\dfrac{15}{4},\dfrac{1}{4}\cdot 3-\dfrac{15}{4}\right)=A'(6,-3);

B(-7,-5)\rightarrow B'\left(\dfrac{1}{4}\cdot (-7)+\dfrac{15}{4},\dfrac{1}{4}\cdot (-5)-\dfrac{15}{4}\right)=B'(2,-5);

C(-3,7)\rightarrow C'\left(\dfrac{1}{4}\cdot (-3)+\dfrac{15}{4},\dfrac{1}{4}\cdot 7-\dfrac{15}{4}\right)=C'(3,-2).

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Solve the equation for the y-value and choose whether it is a direct variation or inverse variation.
Leona [35]

\\ \sf\longmapsto xy=7

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Inverse variation

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Answer:

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