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Artyom0805 [142]
3 years ago
8

Finding the work done in stretching or compressing a spring.

Mathematics
1 answer:
k0ka [10]3 years ago
4 0

Answer:

Check the explanation

Step-by-step explanation:

Kindly check the attached images below to see the step by step explanation to the question above.

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Dr. Park is interested in how the functioning of the brain changes with age and how this, in turn, affects older individuals’ me
a_sh-v [17]

Answer:

Option C.  No, because the two populations from which the samples are selected do not appear to have equal variances.

Step-by-step explanation:

The variance measures how far a set of (random) numbers are spread out from their average value.

The fact that the younger adults show diversity in their brain activity while the older adults produce similar activities show that there are no equal variances in the two populations from which the samples are selected.

Therefore it would not be valid for Dr. Park to use the independent-measures t-test to test whether the brain activity of younger adults is different from that of older adults during a visual recognition task

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3 years ago
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Emily has 2 cups. Amilia has 26 cups. Amilia has how many times as many cups as Emily?​
serious [3.7K]

Answer:

13

Step-by-step explanation:

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2 years ago
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Find a function that models the area A of an equilateral triangle in terms of the length x of one of its sides.
creativ13 [48]
A(x)=\frac{x^2\sqrt3}{4}
3 0
3 years ago
What is the value of -4D^2+15D^2÷5 for D=1
lutik1710 [3]

Plug in D:

-4(1)^2 + 15(1)^2/5

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-4 + 3 = -1

6 0
3 years ago
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Use the three steps to solve the problem.
Oksana_A [137]

Answer:

If the second of the three numbers is  

n

, then the first and third are  

n-  1 and  n + 1 , so we find: 117 = ( n − 1 ) + n + ( n + 1 ) = 3n  

Dividing both ends by  

3  we find: n = 117/  3   = 39

So the three numbers are:

38 , 39 , 40

Step-by-step explanation : I hope it helps please don't forget to mark me brainliest  .  :)

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3 years ago
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