All categories

3 years ago

Jamil traveled 210 miles, which is 70% of the total

Mathematics

1 answer:

Sergio039 [100]3 years ago

7 0

Answer: The correct answer is B because 0.7x=210, x=300

Step-by-step explanation:

210= 70% of the total distance to his grandfather's house, lets take that total distance for x.

So if:

210=0.7x

x=210/0.7

x=300

You might be interested in

Find the slope and the Y-intercept of the graph of y-6=3/8x

balandron [24]

Answer:

Slope =3/8

y-intercept is:(0,6)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

I need to know what the answer is for this question

Anna35 [415]

3pm to 7pm is 4 hours. 4 hours times 2 degrees dropped every hour is 8 degrees total dropped within those 4 hours. The previous temperature of 4 degrees at 3pm minus the 8 degres dropped is -4.

Answer is D.

4 0

3 years ago

Read 2 more answers

3. You have $20 to spend at the snack bar. All of the

Ket [755]

A) $17.50
B) $11.25
C) $5

3 0

2 years ago

Read 2 more answers

Identify two segments that are marked congruent to each other on the diagram

Marat540 [252]

Answer:

segments LJ and LI are congruent

Step-by-step explanation:

look for the little lines (tick marks)

similar marks mean congruent to each other

5 0

3 years ago

What is an example of when you would want consistent data and, therefore, a small standard deviation?

steposvetlana [31]

Answer:

12.1, 12.3,12.4,12.5,12.3,12.1,12.2

$\bar X= \frac{12.1+12.3+12.4+12.5+12.3+12.1+12.2}{7}=12.271$

And for the standard deviation we can use the following formula:

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

And after replace we got:

$s = 0.1496$

And as we can ee we got a small value for the deviation <1 on this case.

Step-by-step explanation:

For example if we have the following data:

12.1, 12.3,12.4,12.5,12.3,12.1,12.2

We see that the data are similar for all the observations so we would expect a small standard deviation

If we calculate the sample mean we can use the following formula:

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

And replacing we got:

$\bar X= \frac{12.1+12.3+12.4+12.5+12.3+12.1+12.2}{7}=12.271$

And for the standard deviation we can use the following formula:

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

And after replace we got:

$s = 0.1496$

And as we can ee we got a small value for the deviation <1 on this case.

8 0

3 years ago