All categories

3 years ago

Please help!! i’m stuck and i’ll give brainliest but i need an explanation for the answer

Mathematics

1 answer:

ehidna [41]3 years ago

8 0

9514 1404 393

Answer:

-12

Step-by-step explanation:

The average rate of change of a function f(x) on an interval [a, b] is defined as ...

average rate of change = ((f(b) -f(a))/(b -a)

For the given function and interval, this is ...

average rate of change = (f(1.25) -f(0.75))/(1.25 -0.75)

= (4 -10)/(0.5) = -12

The average rate of change is -12 on the interval.

The calculator results for f(1.25) and f(0.75) are shown in the attachment, along with the computation of the average rate of change.

You might be interested in

6x squared+ 4 (x square- 1) Simplify the expression

r-ruslan [8.4K]

i think its
6x4-1 that should be the awnser

5 0

3 years ago

Rebecca and dan are biking in a national park for three days they rode 5 3/4 hours the first day and 6 4/5 hours the second day

likoan [24]

Answer:

Rebecca and Dan need to ride $7\frac{9}{20}\ hrs.$ on the third day in order to achieve goal of biking.

Step-by-step explanation:

Given:

Goal of Total number of hours of biking in park =20 hours.

Number of hours rode on first day = $5\frac34 \ hrs.$

So we will convert mixed fraction into Improper fraction.

Now we can say that;

To Convert mixed fraction into Improper fraction multiply the whole number part by the fraction's denominator and then add that to the numerator,then write the result on top of the denominator.

$5\frac34 \ hrs.$ can be Rewritten as $\frac{23}{4}\ hrs$

Number of hours rode on first day = $\frac{23}{4}\ hrs$

Also Given:

Number of hours rode on second day = $6\frac45 \ hrs$

$6\frac45 \ hrs$ can be Rewritten as $\frac{34}{5}\ hrs.$

Number of hours rode on second day = $\frac{34}{5}\ hrs.$

We need to find Number of hours she need to ride on third day in order to achieve the goal.

Solution:

Now we can say that;

Number of hours she need to ride on third day can be calculated by subtracting Number of hours rode on first day and Number of hours rode on second day from the Goal of Total number of hours of biking in park.

framing in equation form we get;

Number of hours she need to ride on third day = $20-\frac{23}{4}-\frac{34}{5}$

Now we will use LCM to make the denominators common we get;

Number of hours she need to ride on third day = $\frac{20\times20}{20}-\frac{23\times5}{4\times5}-\frac{34\times4}{5\times4}= \frac{400}{20}-\frac{115}{20}-\frac{136}{20}$