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2 years ago

Please help I can’t remember how to do it

Mathematics

1 answer:

mr_godi [17]2 years ago

6 0

Answer:

1. She's probalaly going to use that one.

2. Her glass marble is problay going to break.

Step-by-step explanation:

She's picking random marbles right?

So we need to figure out which ones she picked out.

It says that she picked out 9 plasic marbles,

7 wooden marbles, 14 glass marbles,

and 10 wooden marbles. So she then, She put ONE

plasic marble on the table and then replaced

it with another one. Thinksmarter, And if you DID Thinksmarter,

you would know that answer one would be, she would use the other marble and probally not use the one on the table.

lets move on to answer 2. this one is very easy! sheputs a glass marble on the table and then pick/holds the medal one. therefore, the glass marble is round, so it will roll of the table and most likely break.

i hope this helps you and please mark me brainlieist

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The table below provides the values of the functions Flx) and gbx) for several values of z.

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Step-by-step explanation:

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2 years ago

Given A = {x | x < 1}, B = {x | x ≥ 5}, and C = {x | x = 5}, match the following items. 1. A B Ø 2. A C {x | x ≥ 5} 3. B C {x

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Answer:

The matching is shown below.

Step-by-step explanation:

The given sets are defined as

A = {x | x < 1}

It means all the values of x which are less than 1.

B = {x | x ≥ 5}

It means all the values of x which are greater than or equal to 5.

C = {x | x = 5}

It means all the value of x is 5.

Union of two sets contains all the elements of both sets.

Intersection of two sets contains only common elements of both sets.

The matching is shown below.

Sets Correct value

1. A ∪ B {x | x < 1 or x ≥ 5}

2. A ∪ C {x | x < 1 or x = 5}

3. B ∪ C {x | x ≥ 5}

4. A ∩ B Ø

5. B ∩ C {x | x = 5}

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2 years ago

WILL MARK BRANLIEST, FOLLOW YOU, AND SAY UR THE BEST ON UR PROFILE

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2 years ago

In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsibl

ziro4ka [17]

Answer:

The hippocampus volumes in the alcoholic adolescents are less than the normal volume of 9.02 cm³

Step-by-step explanation:

Let x= the hippocampus volumes in the alcoholic adolescents

We'll conduct a hypothesis test at the 0.01 significance level with

Null hypothesis: x = 9.02 cm³

Alternate hypothesis: x < 9.02 cm³

A sample of 13 alcoholic adolescents gives the parameters

size=N= 13

mean=M= 8.12 cm³

standard deviation= s= 0.8 cm³

According to the sample, with 99% confidence, t statistic for the value X=9.02 can be found using the formula:

t= $\frac{X-M}{\frac{s}{\sqrt{N} } }$ where

M is the sample mean (8.12)
s is the standard deviation of the sample (0.8)
N is the sample size (13)

If we put these numbers in the formula:

t= $\frac{9.02-8.12}{\frac{0.8}{\sqrt{13} } }$ =4.056

One tailed critical value for the sample with 12 degrees of freedom (sample size-1) in 99% confidence level is 2.681.

Since t value (4.056) is bigger than the critical value, we fail to reject the alternate hypothesis, therefore reject the null hypothesis and accept alternate hypothesis.

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2 years ago

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