All categories

2 years ago

a train travels 16 miles in 20 minutes. at this rate how many minutes will it take to travel 12 miles

Mathematics

1 answer:

Lady_Fox [76]2 years ago

6 0

Answer:

9.6 min

Step-by-step explanation:

16/20 = 0.8 mpm

12(0.8) = 9.6 min

You might be interested in

Hurry !!!! I need help

Anna [14]

Answer:

x = 66

Step-by-step explanation:

m<5 + m<6 = 180

2x + 48 = 180

2x = 132

x = 66

4 0

2 years ago

Help on geometry plzzzz find b

Nikitich [7]

Answer:

5.5 cm

Step-by-step explanation:

3 0

2 years ago

Please help with explanation if you can

sertanlavr [38]

Answer:

Step-by-step explanation:

The answer is b

8 0

2 years ago

Read 2 more answers

In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2455 subjects randomly select

Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : $\alpha=1-0.99=0.01$

Number of subjects (n) = 2455

Number of surveys returned = 931

The probability of surveys get return will be :-

$p=\dfrac{931}{2455}=0.379226069246\approx0.38$

The confidence interval for proportion is given by :-

$p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}$

$0.38\pm z_{0.005}\times\sqrt{\dfrac{0.38(1-0.38)}{2455}}\\\\=0.38\pm(2.576)0.0098\\\approx0.38\pm0.025=(0.355,0.405)$

Hence, the 99% confidence interval for the proportion of returned surveys : (0.355,0.405)

5 0

3 years ago

Guided Practice

aliina [53]

Answer:

Explanation:

4 goes up 2 to 6. 6 goes up 3 to 9. 9 goes up 4 to 13. Therefore, you can expect 13 to go up 5 to 18, and 18 to go up by 6 to 24.

7 0

3 years ago

a train travels 16 miles in 20 minutes. at this rate how many minutes will it take to travel 12 miles​

a train travels 16 miles in 20 minutes. at this rate how many minutes will it take to travel 12 miles