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3 years ago

He __________ is the only Australian river to flow year-round.

2 answers:

9 0

The A.) MURRAY RIVER is the only Australian river to flow year-round.

It is the longest river in Australia. Its length is 2,508 kilometer or 1,558 miles.
It borders the states of Australia; namely, New South Wales,Victoria, and South Australia.

kirza4 [7]3 years ago

7 0

The a. Murray River is the only Australian river to flow year-round.

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Jerry started a used parts establishment. He marked up the items 30 percent of the purchase price. If one item sold for $715, wh

jek_recluse [69]

Answer:

Jerry paid $500.50.

Step-by-step explanation:

30 / 100 = 0.3

0.3 x 715 = 214.5

715 - 214.5 = 500.5

round to the nearest hundredth

3 0

2 years ago

The speeds of vehicles traveling on a highway are normally distributed with a population standard deviation of 7 miles per hour

True [87]

Answer: $(56.03\ ,63.97)$

Step-by-step explanation:

Given : The speeds of vehicles traveling on a highway are normally distributed .

Standard deviation: $\sigma: 7$

Since , sample size : $n=20$ , which is small sample (n<30) so the test applied here is a t-test.

Degree of freedom= $n-1=20-1=19$

Sample mean : $\overline{x}=60$

Level of significance : $1-\alpha:0.98$

Then , significance level : $\alpha: 1-0.98=0.02$

Using t-distribution table , Critical value : $\text{t-score}=t_{n-1, \alpha/2}= 2.539483$

The confidence interval for population mean is given by :-

$\overline{x}\pm t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$60\pm( 2.539483)\dfrac{7}{\sqrt{20}}\approx60\pm3.97=(56.03\ ,63.97)$

Hence, a 98% confidence interval for the population mean= $(56.03\ ,63.97)$

4 0

3 years ago

Eight more than three times a number is equal to the sum of the number and 10. find the number

Afina-wow [57]

Answer:

8+3x=x+10

2x=2

x=1

The number is 1

6 0

3 years ago

What is the smallest number you should subtract from 456 to make it divisible by 9?

Tanzania [10]

Answer:

<h2>Add up all the digits</h2><h2 /><h2>4+5+6=15</h2><h2 /><h2>The sum of the digits must be equal to 9 so,</h2><h2 /><h2>15=9</h2><h2 /><h2>15–9=0</h2><h2 /><h2>So,it is equal to 6.If we subtract 6 from 456 i.e.,</h2><h2 /><h2>=456–6</h2><h2 /><h2>=450</h2><h2 /><h2>Which is divisible by 9 so,the answer is 6.But if we subtract any digit less than 6 it will not be divisible by 9.</h2>

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the sum of 5*5+3000

Butoxors [25]

3025 because 5*5 is 25 and 25+3000 is 3025

6 0

4 years ago