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zhuklara [117]
3 years ago
5

B) Write an equation of the line that crosses the graph of f(x) at x=-1 and x=2​

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

Step-by-step explanation:

let it passes through (-1,y1) and (2,y2)

slope=\frac{y2-y1}{x2-x1} =\frac{y2-y1}{2-(-1)} =\frac{y2-y1}{3} \\eq. ~of~line~is~\\y-y1=\frac{y2-y1}{3} (x+1)\\3y-3y1=xy2-xy1+y2+y1\\3y=(y2-y1)x+y2+4y1

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The x value in x squared -5x + 4= 0
zheka24 [161]

Answer:

x=0.8

Step-by-step explanation:

-5x + 4= 0

       -4    -4

-5x=-4

÷5

-x=-0.8

x=0.8

6 0
3 years ago
A student is raising money for cancer research. A local business agrees to donate an additional 25% of what the student raises,
Galina-37 [17]

Answer:

585$

Step-by-step explanation:

25% of 450$ is 112.5

5% is 22.5

add all of this to the 450 and you get the answer!

7 0
3 years ago
Read 2 more answers
Which is a equation of the line containing (1,-3)and(7,15)?
-BARSIC- [3]
Slope = 18/6 = 3
Y-intercept = -6
Equation: y = 3x -6
6 0
3 years ago
Evaluate: <img src="https://tex.z-dn.net/?f=%5Csqrt%5B-3%5D%7B27%7D" id="TexFormula1" title="\sqrt[-3]{27}" alt="\sqrt[-3]{27}"
GenaCL600 [577]

Answer:

1/3 is the simplified form for given expression.

Step-by-step explanation:

Given that:

=\sqrt[-3]{27}

By simplifying:

Radical sign will be removed as follows:

= 27^{-1/3}

For removing the "-" sign from power, base will be inverted:

= (1/27) ^ {1/3}

27 can also be written as 3 * 3 * 3 = 3^3

So,

= (1/3^3)^{1/3}

= 1^{1/3} / 3^{3* 1/3}

By simplifying we get:

= 1/3

i hope it will help you!

6 0
3 years ago
PLEASE ANSWER THIS ALSO!!!​
svetoff [14.1K]

Answer:

option C. is correct answer it is 2/5

6 0
3 years ago
Read 2 more answers
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