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3 years ago

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arcus had 8/9 of a pack of construction paper. he used 1/5 of the paper to make paper airplanes. what fraction of the original p

ack did Arcus use to make paper airplanes?

1 answer:

vovikov84 [41]3 years ago

4 0

Take and do 8/9 - 1/5 which gives u 40/9which equals 4 4/9.

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

Anton [14]

Answer:

We do not reject the Null Hypothesis

Step-by-step explanation:

From the question we are told that:

Sample size $n=23$

Population mean $\mu=9.02cm^3$

Sample mean $\=x=8.16$

Standard deviation $\sigma=0.7cm^3$

Significance level $\alpha =0.01$

Generally the Null and and alternative Hypothesis are as follows

$H_0:\mu=9.02cm^3$

$H_a:\mu$

Therefore t critical Value is

$t\ critical\ Value=(\alpha,df)$

$t\ critical\ Value=(0.01,22)$

Where

$df=n-1\\\\df=23-1=>22$

Therefore

From t Table

$t value=-2.8$

Generally the equation for Z Critical is mathematically given by

$t=\frac{\=x-\mu}{\frac{\sigma}{\sqrt{n} } }$

$t=\frac{8.16-9.02}{\frac{0.7}{\sqrt{23} } }$

$t=-5.89$

Therefore

Since the t test statistics is greater than the Critical value

Hence,we do not reject the Null Hypothesis

4 0

3 years ago

Mrs. Carpenter received a bill for a car repairs. :Car repairs $134.00: About how much was the oil change if the other repairs w

Kaylis [27]

Answer:

About $32

Step-by-step explanation:

134-102

4 0

3 years ago

The equation of line r is y = -12 1 2 x - 4. If line s runs perpendicular to line r and passes through (4, -3), what would be th

N76 [4]

Can you please retype the equation for line r? I don’t understand

3 0

3 years ago

Read 2 more answers

A seal has 1,500 nerves per whisker. That is 101010 times as many as a rat has. How many nerves per whisker does a rat have?

GREYUIT [131]

Answer:

0.01485...

Step-by-step explanation:

<u>Given:</u>

A seal has 1,500 nerves per whisker
This is 101,010 times as much as a rat has per whisker

<u>We will:</u>

Divide the number 1,500 by 101,010

1,500 ÷ 101,010 = 0.0148500149

0.0148500149 ⇒ 0.01485 when rounded

Your answer: 0.0148500149, 0.01485 when rounded

<h3>Carry on Learning!</h3>

6 0

3 years ago

Ecuaciones <br> 5/3+2/4x=1/2

liubo4ka [24]

I don't get what you meant

5 0

4 years ago