Divide it by 25 witch is the height then find the square root
The graph has no scale, so we can only make conclusions based on:
1. slope is negative (true), zero, or positive
slope is coefficient of x when equation is in standard form
2. y-intercept is negative, zero, or positive (true)
y-intercept is value of y when x=0
3. x-intercept is negative, zero, or positive (true).
x-intercept is value of x when y=0
Now let's look at the given answer choices:
A. 2x-y=7 => y=2x-7 => slope=2 >0 (false); => FALSE
B. 3x+2y=6 => y=-1.5x+6 => slope<0 (true); y-intercept>0 (true); x-intercept=6/3=2 >0 (true) => TRUE
C. y=5 => slope=0 (false) => FALSE
D. y=-4x+2 => slope=-4 <0 (true); y-intercept=2>0 (true); x-intercept=+1/2>0 (true) => TRUE
Answer:
17
Step-by-step explanation:
→ f(x) = 3x + 2
→ f(5) = 3(5) + 2
→ 15 + 2
→ 17 is the answer.
Answer:
3x+15
Step-by-step explanation:
When it says "the sum of a number three times", it means 3x, because the x stands for multiplication and the problem says the sum sum is between 3x and the number 15. So your equation is 3x+15. Hope this helps ;)
Answer:

In order to find the variance and deviation we need to find the mean with this formula:

And replacing we got:

Now we can find the variance with the following formula:

And replacing we got:

And the standard deviation would be:

For this case since the range observed is large is better to use a measure of variation in order to check the spread of the values and take a decision useful
Step-by-step explanation:
For this case we have the following dataset:
60 58 55 53 47 45 44 43 25 25 20 18 7 5
We can find the range with this formula:

And replacing we got:

In order to find the variance and deviation we need to find the mean with this formula:

And replacing we got:

Now we can find the variance with the following formula:

And replacing we got:

And the standard deviation would be:

For this case since the range observed is large is better to use a measure of variation in order to check the spread of the values and take a decision useful