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3 years ago

10

23. 10c2 - 21c = -4c + 6

1 answer:

laila [671]3 years ago

7 0

Answer:

c = 2 or c = -3/10

Step-by-step explanation:

23. 10c2 - 21c = -4c + 6

10*cc - 21c = -4c + 6

10cc - 21c + 4c - 6 = 0

10cc - 17c - 6 = 0

c = 17/20 + root (17*17 - 4*10 *(-6)) / 20

c = 17/20 + 23/20

c = 2 or c = -6/20 = -3/10

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2 years ago

What is the other endpoint if one endpoint is (10,12) and the midpoint is (6,9).?

Lubov Fominskaja [6]

Answer:

$(2,\, 6)$ .

Step-by-step explanation:

Let $(x_{0},\, y_{0})$ and $(x_{1},\, y_{1})$ denote the two endpoints.

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$\displaystyle \left(\frac{x_{0} + x_{1}}{2},\, \frac{y_{0} + y_{1}}{2}\right)$ .

(Similar to taking the average of each coordinate.)

In this question, it is given that $x_{0} = 10$ whereas $y_{0} = 12$ . Substitute these two values into the expression for the coordinate of the midpoint:

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2 years ago

Equation: (y+12)/(-4)=5<br> What is y?

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2 years ago

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2 years ago

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Vadim26 [7]

use the eqn below to find the mid-pts

x-mid-pt = (x₁+x₂)/2

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So

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3 years ago

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