3 years ago

Start 7:10 elapsed end 8:30

1 answer:

3 0

It has been 1 hour and 20 minutes.

HOW I FOUND MY ANSWER:

7:10 to 8:10 = 1 hour

8:10 to 8:30 = 20 minutes

(1 hour + 20 minutes = 1 hr and 20 min.)

HOPE THIS HELPED
:)

You might be interested in

-- {(-7, 2), (3,5), (8,4), (-6,5), (-2,3)} Domain:

8090 [49]

Answer:

no solution

Step-by-step explanation:

8 0

3 years ago

The circumference of a circle is 140 cm. What is the radius of the circle?

NikAS [45]

2*22/7*r=140

r=22.27

is the answer

8 0

3 years ago

Read 2 more answers

A used motorcycle is on sale for $3,600. Erik makes an offer equal to 3/4 (fraction) of this sale price. How much does Erik offe

seraphim [82]

$2,700 is the answer.

8 0

3 years ago

The data (1.5.8.5.1) represent a random sample of the number of days absent from school for five students at Monta Vista High. F

lianna [129]

Answer:

$\bar X = \frac{1+5+8+5+1}{5}= \frac{20}{5}= 4$

$\sigma= \sqrt{\frac{(1-4)^2 +(5-4)^2 +(8-4)^2 +(5-4)^2 +(1-4)^2}{5}} =\sqrt{\frac{36}{5}}= 2.68$

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

Step-by-step explanation:

For this case we have the following data given:

1,5,8,5,1

We can find the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = \frac{1+5+8+5+1}{5}= \frac{20}{5}= 4$

And for the deviation (assuming that the correct approximation is the deviation for a population) we can calculate the deviation with the following formula:

$\sigma = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And replacing we got:

$\sigma= \sqrt{\frac{(1-4)^2 +(5-4)^2 +(8-4)^2 +(5-4)^2 +(1-4)^2}{5}} =\sqrt{\frac{36}{5}}= 2.68$

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

3 0

3 years ago

Find the area of the figure shown below and type your result in the empty box.

lianna [129]

Answer:

did u forget to add the actual question

Step-by-step explanation:

5 0

3 years ago