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2 years ago

Write the equivalent expression to the sum of the expressions 3a2 + 3a and -3a - 3a2

Mathematics

1 answer:

ASHA 777 [7]2 years ago

7 0

Answer:

$3 {a}^{2} + 3a + (- 3 {a}^{2} - 3a) \\ = 3 {a}^{2} - 3 {a}^{2} + 3a - 3a \\ = 0 \\ thank \: you$

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Which strategies can be used to solve this problem?

vladimir2022 [97]

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A because you need brain for most problems
D works

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3 years ago

Who knows how to do this please i need help I don’t understand

ArbitrLikvidat [17]

Answer:

9,4,0,1

Step-by-step explanation:

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3 years ago

What is csc ( Reduce fractional answers to lowest terms.

harina [27]

Answer:

cscA = $\frac{5}{4}$

Step-by-step explanation:

Using the identity

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3 years ago

A group of 50 New York psychology students got a mean score of 530 on the psychology GRE with a standard deviation of 80. These

lesantik [10]

Answer: No, New York students are not truly more nerdy than the California students.

Step-by-step explanation:

Since we have given that

Number of students in a group = 50

Mean score of New York psychology = 530

Mean score of California psychology = 515

Standard deviation = 80

So, we will find t-distribution first.

$t=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\t=\dfrac{530-515}{\dfrac{80}{\sqrt{50}}}\\\\t=1.32$

Let α = 5% = 0.05

So, $t_{\alpha,2}=2.920$

Since t < t(critical value)

No, New York students are not truly more nerdy than the California students.

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3 years ago

The sum of three consecutive numbers is -12. Find the sum of the integers?

777dan777 [17]

Answer: -3, -4, -5 are the integers

Step-by-step explanation: I don't get what you mean in this problem. You said the sum was -12 but then you are asking for the sum again? Do you want the integers? If so they are -3 -4 and -5 and if you want the sum then it is -12

I hope this helps and brainliest would be appreciated

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2 years ago