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sveta [45]
3 years ago
10

What is the product? (9t − 4)(−9t − 4) −81t2 − 16 −81t2 16 −81t2 − 72t 16 −81t2 72t 16

Mathematics
1 answer:
Alexxandr [17]3 years ago
5 0
<span>We have to find the product : ( 9 t - 4 ) ( - 9 t - 4 ) = - ( 9 t - 4 ) ( 9 t + 4 ) After that we can use the difference of squares. The formula is: ( a + b ) ( a - b ) = a^2 - b^2. In this case: - ( 9 t - 4 ) ( 9 t + 4 ) = - ( 81 t^2 - 16 ) = - 81 t^2 + 16 . Answer: B ) - 81 t^2 + 16.</span>
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8_murik_8 [283]

Divide the sale price by the original price:

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Multiply by 100:

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4 0
3 years ago
Please explain your answer as well. Thx!!!
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Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

8 0
3 years ago
En un estudio estadistico se van a usar unicamente variables cuantitativas discretas para ingresarlas a un programa de analisis
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5 0
2 years ago
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