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Korolek [52]
2 years ago
14

Answer PLS

Mathematics
2 answers:
Zolol [24]2 years ago
8 0

Answer:

yes, your score is good for a seventh grader.

keep it up and you can score more.

Anestetic [448]2 years ago
3 0
Yes i think it’s okay!
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Given the function graphed below, what is the average rate of change between f(3) and f(7)?
Shkiper50 [21]
Answer: choice D) 20

-------------------------------

Explanation:

Locate 3 on the x axis number line. Draw a vertical line through 3 and this vertical line will cross the parabola at some point P. Mark this point P on the parabola. Then draw a horizontal line from P to the y axis. The horizontal line will land on y = 10. In short, this all shows us that (3,10) is a point on this parabola.

Repeat those steps above, but now for x = 7. You'll see that (7,90) is another point on this parabola.

We need to find the slope of the line through the two points (3,10) and (7,90). The average rate of change from x = 3 to x = 7 is the same as the slope of the line through those two points.

To find the slope, we use the slope formula
m = (y2 - y1)/(x2 - x1)
where (x1,y1) and (x2,y2) are the two points, and m is the slope

In this case,
(x1,y1) = (3,10) and (x2,y2) = (7,90)
further breaking down to
x1=3
y1=10
x2=7
y2=90
So we'll plug those four pieces of info into the equation and simplifying to get...
m = (y2 - y1)/(x2 - x1)
m = (90 - 10)/(7 - 3)
m = 80/4
m = 20

The slope of the line is 20, so therefore, the average rate of change is 20.

6 0
3 years ago
The length of a rectangle exceeds the width by 7 cm. If the area
Artyom0805 [142]

Answer:

Length = 12cm

Step-by-step explanation:

The dimensions of the recatngle is:

- width → x

and

- length → x+7

The area of a rectangle follows the formula: length*width

Meaning: x * (x + 7) = 60

Expand that: x^2 + 7x = 60

Rearragne the equation and factorise it

(x-5)(x+12) = 0

The width cannot be a negative value, so the answer must be 5.

Remember that x was the width and the length is the width add the 7.

So the length is 12 cm.

8 0
3 years ago
PLEASE HELP ASAPPPP!!!!!!!<br> here is a screenshot of the math problem
Harlamova29_29 [7]
X = -1 Is the answer hope you get it right!!!!
3 0
2 years ago
Yan is climbing down a ladder. Each time he descends four rungs on the ladder, he stops to see how much farther he has to go. Wh
hjlf
My Answer: Descends

Hope I helped! :D
3 0
3 years ago
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There are ten stripes on each button there are 50 buttons how many strikes on 50 buttons
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10 times 50 equals 500. So 500 stripes on 50 buttons.
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