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AysviL [449]
3 years ago
8

PLEASE HELP! I have a deadline tonight ,I have to get this done! thank you!! Two questions (:

Mathematics
1 answer:
Viktor [21]3 years ago
3 0
Both of your answers are correct. In the first equation, if you were to substitute 3 for x, because you have to do exponents first, you have 3^2, which is 9, and 9*6 =54. If you were to substitute -3 for x again you would have to do the exponents first which would be -3^2 which is 9, and 9*6 = 54. 

For the second question, if I substitute 0.75 for t, I get -9 + 18 + 7. This is equal to 16, and therefore the answer would be D. Hope this helps! :D. Let me know if you have questions about my explanation, and feel free to post more questions.
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Factor this expression.
Sindrei [870]

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D

Step-by-step explanation:

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3 years ago
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While shopping at the school bookstore Ric purchased 4 book covers for $1.25 each and a pen that cost 2/5 as much as a book cove
Anvisha [2.4K]

Answer: Ric will get $4.50 back in change

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2 years ago
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kirza4 [7]

Answer:

d is the ans

Step-by-step explanation:

D is the answer

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3 years ago
What is the mean absolute deviation for the data set
motikmotik

Answer:

Mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean.

Step-by-step explanation:

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2 years ago
Según la reacción de abajo, ?Cuantos gramos ácido sulfhídrico se desprenden, cuando reaccionan completamente 5 moles de sulfuro
lisov135 [29]

Answer:

510g H2S

Step-by-step explanation:

En esta pregunta, se nos pide calcular la masa de H2S emitida cuando 5 moles de sulfuro de níquel reaccionan completamente con el agua.

De la ecuación equilibrada, podemos ver que 1 mol de sulfuro de níquel produjo 3 moles de sulfuro de hidrógeno Por lo tanto, 5 moles de sulfuro de níquel producirán = 5 * 3 moles = 15 moles de sulfuro de hidrógeno

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5 0
3 years ago
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