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AlexFokin [52]
3 years ago
6

Simplify the expression (-3+4k) - (-2+ 7k)

Mathematics
1 answer:
DedPeter [7]3 years ago
4 0

Answer: −1−3k

Step-by-step explanation:

Distribute:

(−3+4k)−1(−2+7k)

(-3+4k)+{2-7k}

Eliminate redundant parentheses:

(−3+4k)+2−7k

-3+4k+2-7k

Add the numbers:

−3+4k+2−7k

−1+4k−7k

Add the same term to both sides of the equation:

−1+4k−7k

−1−3k

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Answer:

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Step-by-step explanation:

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2 years ago
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Write a series of rigid motions that transform pentagon ABCDE to pentagon A′B′C′D′E′
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Answer:

We need the following three rigid motions:

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Step-by-step explanation:

We need to perform three operations on pentagon ABCDE to create pentagon A'B'C'D'E':

i) Reflection around y-axis:

(x',y') = (-x,y) (Eq. 1)

ii) Translation three units in the -y direction:

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iii) Translation four units in the -x direction:

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We proceed to proof the effectiveness of operations defined above by testing point D:

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2 years ago
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