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Brilliant_brown [7]
3 years ago
7

At about what age does the brain begin "pruning"? a. 1 b. 5 c. 10 d. 70

Mathematics
2 answers:
Aloiza [94]3 years ago
7 0
Correct Answer: Option A

Pruning is a natural process that occurs within our brains. It occurs during the phase when the child has to pass from childhood to adulthood. In simple words it can be said that during Pruning brain removes the extra connections that are no longer needed in the brain. 

Pruning starts at the very early age but continues for several years. So the correct answer to this question is option A. Brain starts Pruning at the age of 1 but most pruning occurs from age 2 to 10.
ra1l [238]3 years ago
4 0
I believe the correct answer from the choices listed above is option A. It is at about 1 year old that the brain begin "pruning". It is thought to be a process   of removing neurons which may have become damaged or degraded in order to further improve the "networking" capacity of a particular area of the brain.
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Find the value of the expression
MArishka [77]

The value would be -35.357.

8 0
3 years ago
A random sample of 100 automobile owners in thestate of Virginia shows that an automobile is driven onaverage 23,500 kilometers
Anastaziya [24]

Answer:

a) 22497.7 < μ< 24502.3

b)  With 99% confidence the possible error will not exceed 1002.3

Step-by-step explanation:

Given that:

Mean (μ) = 23500 kilometers per year

Standard deviation (σ) = 3900 kilometers

Confidence level (c) = 99% = 0.99

number of samples (n) = 100

a) α = 1 - c = 1 - 0.99 = 0.01

\frac{\alpha }{2} =\frac{0.01}{2}=0.005\\ z_{\frac{\alpha }{2}}=z_{0.005}=2.57

Using normal distribution table, z_{0.005 is the z value of 1 - 0.005 = 0.995 of the area to the right which is 2.57.

The margin of error (e) is given as:

e= z_{0.005}\frac{\sigma}{\sqrt{n} }  = 2.57*\frac{3900}{\sqrt{100} } =1002.3

The 99% confidence interval = (μ - e, μ + e) = (23500 - 1002.3, 23500 + 1002.3) =  (22497.7, 24502.3)

Confidence interval = 22497.7 < μ< 24502.3

b) With 99% confidence the possible error will not exceed 1002.3

5 0
3 years ago
Can somebody please help me? :(
Natasha2012 [34]

Answer:

143 square meters

Step-by-step explanation:

The surface has a width of 11 meters and a length of 13 meters.

13 x 11 = 143.

Is this correct?

5 0
2 years ago
Help please and hurry
yKpoI14uk [10]

Answer:ok here u go

Step-by-step explanation  the reason its no solutions is because there is no x and that makes the problem no solution

3 0
3 years ago
Help me please. Im giving brainliest!!!!!!
grigory [225]

Answer:

Option (d).

.

.

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{\bold{\red{HOPE\:IT\:HELPS!}}}

\color{yellow}\boxed{\colorbox{black}{MARK\: BRAINLIEST!❤}}

6 0
3 years ago
Read 2 more answers
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