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Marianna [84]
2 years ago
5

9. Preschoolers were asked to assemble a plastic toy several times in a row and were timed as

Mathematics
1 answer:
GuDViN [60]2 years ago
8 0

Answer:

The researchers considered the before and after design of the study. They concluded that since the P-value was greater than the significance level, they had to fail to reject the null hypothesis.

Step-by-step explanation

test says is correct

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The expression sin 80 cos 70 + cos 80 sin 70 is equivalent to
vekshin1
Sin(70+80) = sin 150.......................
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3 years ago
16x2 + 10x – 27 = -6x + 5<br> What are the solutions to this equation ?<br> X<br> x=
bonufazy [111]

Answer:

x=-2              x=1

Step-by-step explanation:

16x2 + 10x – 27 = -6x + 5

Add 6x to each side

16x^2+6x + 10x – 27 = -6x+6x + 5

16x^2 +16x -27 = 5

Subtract 5 from each side

16x^2 + 16x – 27-5 = 5 - 5

16x^2 +16x -32 = 0

Factor out 16

16 (x^2 +x-2)=0

Factor

16 (x+2) (x-1) =0

Using the zero product property

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3 years ago
11points HELP PLZ!!!
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Answer: 0.00215

Step-by-step explanation:

10^-3 =0.001

2.8 • 0.001 - 0.00065

=0.00215

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According to the graph, the system of linear equations has how many solutions?
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