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vichka [17]
3 years ago
11

NEED HELP ASAP!!!!!!

Mathematics
1 answer:
Andrei [34K]3 years ago
4 0
After 2 hours : 9 inches left
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In J, K is the midpoint. The coordinates of ) are (2, 2), and the coordinates of Kare (10, 11). What are the coordinates of L?
DiKsa [7]

Answer:

L(18, 20)

Step-by-step explanation:

In JL, K is the midpoint. The coordinates of J are (2, 2), and the

coordinates of K are (10, 11). What are the coordinates of L?

Solution:

If O(x, y) is the midpoint between two points A(x_1,y_1) and B(x_2,y_2). The equation to determine the location of O is given by:

x=\frac{x_1+x_2}{2} \\\\y=\frac{y_1+y_2}{2}

Since JL is a line segment and K is the midpoint. Given the location of J as (2, 2) and K as (10, 11). Let (x_2,y_2) be the coordinate of L. Therefore:

10=\frac{2+x_2}{2} \\\\20=2+x_2\\\\x_2=18

11=\frac{2+y_2}{2} \\\\22=2+y_2\\\\y_2=20

Therefore L = (18, 20)

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3 years ago
Evaluate -3x^3 - 4x for x=-1.
Ivenika [448]

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-x.(3x^2+4)

Step-by-step explanation:

Brain-list?

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If Clarie bikes at an average speed of 7
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What does (-x)+(-x)+(-x)=
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-3x

Step-by-step explanation:

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PLZ HELP ME WITH THIS ONE ALSO :)
Norma-Jean [14]

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9 \times  \sqrt{3 }

Step-by-step explanation:

x =  \cos(30)  \times 18 \\ x = 9 \sqrt{3}

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