Circle the equivalent expressions 6x+18-3x-9 6x-3(3x-3) -3(x-3) -6x+3(3+3x)-6x
1 answer:
Equivalent expressions are:
6x-3(3x-3)
-3(x-3)
-6x+3(3+3x)-6x
Step-by-step explanation:
We have to simplify each expression for comparison
Expression 1:
Expression 2:
Expression 3:
Expression 4:
Hence,
Equivalent expressions are:
6x-3(3x-3)
-3(x-3)
-6x+3(3+3x)-6x
Keywords: Polynomials, expressions
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Answer:
a = 7.2
Step-by-step explanation:
The figure has been re-labelled and attached to this response.
From the figure, the larger right triangle DAB and the small right triangle BCA are similar. This is because;
i. They have two corresponding congruent angles which are<em> the right angle</em>
and <em>angle B</em>
Therefore, we can say that;
<em>Cross multiply</em>
a x a = 13 x 4
a² = 52
a = √52
a = 7.2
Note: The figure showing the similar triangles has also been attached to this response.
