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3 years ago

Charlotte is running a rate of 9 km per hour. What is her rate at meters per second?

1 answer:

8 0

1 km = 1000 meters and 1 hour = 3600 seconds.

9x1000= 9000

9000/3600= 2.5

Your answer would be 2.5 meters per second.

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Refer to the accompanying TI-83/84 Plus calculator display of a 95% confidence interval. The sample display results from using a

nikklg [1K]

Answer:

The confidence interval is $22.805$

Step-by-step explanation:

We have given,

The Z interval (23.305,25.075)

Mean $\bar{x}=23.69$

Sample n=30

To find : The confidence interval?

Solution :

We know, The confidence interval is in the format of

$\bar{x}-E$

E denotes the margin of error,

$E=\frac{U-L}{2}$

Where, U is the upper limit U=25.075

L is the lower limit L=23.305

$E=\frac{25.075-23.305}{2}$

$E=\frac{1.77}{2}$

$E=0.885$

Substitute the value of E and $\bar{x}$ in the formula,

$23.69-0.885$

$22.805$

Therefore, The confidence interval is $22.805$

8 0

3 years ago

All radical expressions that are equivalent to 3 2/5

SCORPION-xisa [38]

Answer:

Step-by-step explanation:

√15 (3√5)^2 3√5^2 3√10

4 0

3 years ago

Ill give Brainliest. please explain your answers. im so confused on these questions :((

Katen [24]

Answer:

I'll answer the first one. Neither vehicles are crossing the speed limit since both are under 40mph.

Step-by-step explanation:

6 miles every 10 minutes = 36 miles every hour.

15 miles every 25 minutes = 36 miles every hour.

Speed limit = 40 mph

Neither vehicles are crossing the speed limit since both are under 40mph.

Hope this helped! :))

8 0

2 years ago

-8+20 use the number line to justify your answer

Nana76 [90]

Answer:

Step-by-step explanation:

Start at negative 8 on the number line than move to positive 20

7 0

3 years ago

What is the slant height ?

LekaFEV [45]

Answer:

32 or 34 I multiply 18 by 4 to get it

6 0

3 years ago