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Varvara68 [4.7K]
2 years ago
14

25 POINTS! Determine the slope in the graph and be able to explain how you found it.

Mathematics
2 answers:
Lelechka [254]2 years ago
7 0
12 points aight, my fault
DiKsa [7]2 years ago
6 0

Answer:

slope = 5

Step-by-step explanation:

For a straight line, slope  = change in vertcal coordinate/change in horizontal component. Students sometimes remember this as "rise over run", because it measures how much the graph rises (up for positive or down for negative) for every unit it 'runs' to the right.

Pick any two different points from the graph, for example (x,y) = (24, 120) and (x,y) = (4, 20).

The change in y = 120-20 = 100

The change in x = 24-4 = 20

(It doesn't matter which point's coordinates you put first in the subtractions, as long as it is the <u>same</u> point in both the numerator and the denominator.)

slope = (change in y)/(change in x) = (120-20)/(24-4) = 100/20 = 5

If you first look at the graphic in this problem, you might think the slope is 1, because the line goes up 1 square for every square you go to the right.  But that is because of the scale on the two axes. The x-axis coordinate only increases by 4 units for each block to the right that you move. But the the y-axis coordinate increases by 20 units for each block up that you move. Thus, a block on the y-axis is equivalent to 5 blocks on the x-axis!

In math terminology, you may see slope written as m = Δy/Δx, because the usual variable for slope is 'm' and the Greek letter delat 'Δ' is sued in math, scince, and enginerring as a symbol for 'change'.

Hope this is a good explanation for you.

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Please help i will mark brainlist
Feliz [49]

Answer:

72.22 inches

Step-by-step explanation:

Okay so the formula for circumference is C=2πr so since the diameter is twice the radius, the radius is 11.5. Now you have to multiply 11.5 and 2. That equals 23. Now you have to multiply 23 by π which is about 3.14. 23 times 3.14 is 72.22 inches.

Hope this helped!! :D

8 0
3 years ago
70 points and i’ll give brainliest!! please answer all the questions on the page! must show work and how you got the answer. ple
Bezzdna [24]

6. One variable only so pretty straightforward.

length-x+4

width-x

x+x+4=80

2x=76

x=38

x+4=42

answer: length 42cm and width 38cm

7. Another money problem!

n-# of nickels

q-# of quarters

n=3+q

0.05n+0.25q=2.85

Substitution works like a charm!

0.05(3+q)+0.25q=2.85

0.15+0.05q+0.25q=2.85

0.3q=2.7

q=9

n=3+q

n=3+9

n=12

answer: 9 nickels and 12 quarters

8. One variable situation again.

Ann's money-2b+9

Betty's money-b

b+2b+9=60

3b=51

b=17

2b+9=43

answer: Ann has $43 and Betty has $17.

9. # of red m&m's-x+1

# of blue m&m's-x

x+1+x=13

x=6

x+1=7

answer: 6 blue and 7 red m&m's

10. a-number of adult tickets

s-number of student tickets

a+s=785 ----> a=785-s

5a+2s=3280

5(785-s)+2s=3280

-3s=-645

s=215

a+s=785

a+215=785

a=570

answer: 215 children tickets and 570 adult tickets

3 0
3 years ago
What is 9365+643-9433+7.99999 repeating
nika2105 [10]
It is 780.99999     sorry if i'm incorrect
5 0
4 years ago
Find the GCF of <img src="https://tex.z-dn.net/?f=18x%5E%7B3%7D" id="TexFormula1" title="18x^{3}" alt="18x^{3}" align="absmiddle
melamori03 [73]

18x^3 = 6x^3 *  1

30x^5 = 6x^3 * 5x^2


So GCF = 6x^3


Answer

6x^3

8 0
3 years ago
Read 2 more answers
Can someone help please
myrzilka [38]
<h3>Answer:   15x^(7/3) - 8x^(7/4) + x + 9000</h3>

=========================================================

Explanation:

If you know the cost function C(x), to find the marginal cost, we apply the derivative.

Marginal cost = derivative of cost function

Marginal cost = C ' (x)

Since we're given the marginal cost, we'll apply the antiderivative (aka integral) to figure out what C(x) is. This reverses the process described above.

\text{Cost} = \text{antiderivative of marginal cost}\\\\\displaystyle C(x) = \int \left(35x^{4/3} - 14x^{3/4} + 1\right)dx\\\\

C(x) = \frac{1}{1+4/3}*35x^{4/3+1} - \frac{1}{1+3/4}*14x^{3/4+1} + x + D\\\\C(x) = \frac{1}{7/3}*35x^{7/3} - \frac{1}{7/4}*14x^{7/4} + x + D\\\\C(x) = \frac{3}{7}*35x^{7/3} - \frac{4}{7}*14x^{7/4} + x + D\\\\C(x) = 15x^{7/3} - 8x^{7/4} + x + D\\\\

D represents a fixed constant. I would have used C as the constant of integration, but it's already taken by the cost function C(x).

To determine the value of D, we plug in x = 0 and C(x) = 9000. This is because we're told the fixed costs are $9000. This means that when x = 0 units are made, you still have $9000 in costs to pay. This is the initial value. You'll find that all of this leads to D = 9000 because everything else zeros out.

Therefore, we go from this

C(x) = 15x^{7/3} - 8x^{7/4} + x + D\\\\

to this

C(x) = 15x^{7/3} - 8x^{7/4} + x + 9000\\\\

which is the final answer.

3 0
2 years ago
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