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Delvig [45]
4 years ago
15

What equation models the data in the table if d = number of days and c = cost?

Mathematics
1 answer:
Lera25 [3.4K]4 years ago
6 0
C = 11*(2*d) Try it and see that it fits every sample you have. Again this can be simplified to
C = 22 * d
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How do i divide a whole number by a fractions
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Need Help With 8 and 9
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3 years ago
Write the formula for the parabola that has x- intercepts (3,0) and (8,0), and y- intercept (0,−2)
alexira [117]

Answer:x^2-5x=-12(y+2)

Step-by-step explanation:

Given

Parabola has x-intercept has (3,0) and (8,0)

and Y-intercept as (0,-2)

Now the general equation of parabola is

y=ax^2+bx+c\quad \ldots(i)

Substitute  (0,-2) in (i) we get

-2=c

Now substitute (3,0) in equation (i)

0=a(3)^2+3b-2\quad \ldots(ii)

Now substitute (8,0) in equation (i)

0=a(8)^2+8b-2\quad \ldots(iii)

Solving (ii) and (iii) we get

a=\frac{-1}{12}\ \text{and}\ b=\frac{5}{12}

therefore

y=\frac{-x^2}{12}+\frac{5x}{12}-2

12y=-x^2+5x-24

5 0
4 years ago
Is the result statistically significant? Explain your answer.What does a mean difference of zero between the two groups indicate
valkas [14]

Answer:

Statistically significant means a result is unlikely due to chance. The p-value is the probability of obtaining the difference we saw from a sample (or a larger one) if there really isn't a difference for all users

8 0
3 years ago
(2-4i)+(3+7i)<br><img src="https://tex.z-dn.net/?f=%282%20-%204i%29%20%2B%20%283%20%2B%207i%29" id="TexFormula1" title="(2 - 4i)
zysi [14]

(2-4i)+(3+7i)=5+3i

5 0
4 years ago
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