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Gekata [30.6K]
2 years ago
13

What is the value of the expression below when y=2 6y^2 +8y-9

Mathematics
1 answer:
Annette [7]2 years ago
8 0

Answer:

6y^2+7

Step-by-step explanation:

when you put in the two for y you get tour answer. i tried to simplify it down to the simplest form.

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Prove that tan22° + tan23° + tan22°. tan23° = 1 ​
postnew [5]

Answer:

Hope you got it....

Step-by-step explanation:

1=tan45∘

1=tan(22∘+23∘)

1=tan22∘+tan23∘1−tan22∘tan23∘

1−tan22∘tan23∘=tan22∘+tan23∘

1=tan22∘+tan23∘+tan22∘tan23∘

It will be the same for any two angles that add up to 45∘.

7 0
3 years ago
Read 2 more answers
Which of the following functions is quadratic?
jenyasd209 [6]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
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When our brains store information, complicated chemical changes take place. In trying to understand these changes, researchers b
Rainbow [258]

Answer:

D) P-045 says that a response this small or smaller would be seen in sample data almost half the time when in fact there is no effect in the entire population of rats. That is, a response this size would often happen just by chance.

Step-by-step explanation:

The P-value represents the probability of getting the test sample results given that the null hypothesis is true.

A P-value that is low enough (smaller than the significance level) gives statistical evidence to support that the null hypothesis is not true.

In this case,  a P-value of 0.45 does not represent a strong evidence against the null hypothesis, as there is 45% of chances of getting this sample results if the null hypothesis is true.

In this case, as we talk about differences ("no difference was seen" between the two groups), we know that the sample difference has not been large enough to be proved statistically significant.

So the right answer is Option d).

8 0
2 years ago
What is the result when the following equation is solved?
amm1812

Answer:

Step-by-step explanation:

4/5x = 1

4x = 5

x = 5/4

solution is c

8 0
3 years ago
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19. 15 kilometers is _______.
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15 kilometres = 15,000 metres (C)

1 km = 1,000 m

15 km = 15 × 1,000 = 15,000 m

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