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ra1l [238]
2 years ago
6

Solve each equation for the indicated variable. Solve for pi.

Mathematics
1 answer:
frutty [35]2 years ago
4 0

9514 1404 393

Answer:

  π = 2A/r²

Step-by-step explanation:

Multiply by the inverse of the coefficient of π.

  A = π(r²/2)

  π = 2A/r²

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Kite GHIJ has sides GH, HI, IJ and JG. What are the diagonals of this figure? Select all that apply.
tatyana61 [14]
First, draw a diagram of a kite with sides GHIJ. The sides GH, HI, IJ, and JG are the sides. The diagonals can be determined by connecting the opposite sides. J and H, G and I. Therefore, the diagonals for the Kite GHIJ is JH and GI. 
4 0
3 years ago
How many solutions does the system formed by x - y = 3 and ay + 3a = 0 have for a non zero number a? Explain and show how you ge
dlinn [17]
Solve both equations for y:
x-y=3 \ \ \ |-x \\
-y=-x+3 \ \ \ |\times (-1) \\
y=x-3 \\ \\
ay+3a=0 \ \ \ |-3a \\
ay=-3a \ \ \ |\div a, a \not= 0 \\
y=-3

Set the expressions equal to each other:
y=y \\ x-3=-3 \ \ \ |+3 \\
x=0 \\ \\
(x,y)=(0,-3)

So, for every nonzero number a the system of equations has one solution.
4 0
3 years ago
A line passes through the point (2, 1) and has a slope of -5/2
Makovka662 [10]

Answer:

y  = -\frac{5}{2}x +6

Step-by-step explanation:

Given

m = -\frac{5}{2} -- slope

(x_1,y_1) = (2,1) --- point

Required

Determine the line equation

In slope intercept form, a line equation is:

y - y_1 = m(x - x_1)

This gives:

y - 1 = -\frac{5}{2}(x - 2)

Open bracket

y - 1 = -\frac{5}{2}x +5

Add 1 to both sides

y - 1+1 = -\frac{5}{2}x +5+1

y  = -\frac{5}{2}x +6

8 0
3 years ago
The teams won-lost ratio was 3 to 2 the team played 20 games did the team win
Ne4ueva [31]

Answer:

The answer would be 15

Step-by-step explanation:

2/3 of 20 is 15

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3 years ago
Select the letters that only have one line of symmetry.
Vladimir [108]

Answer:

A, B, C, D, E, K, M, S, T, U, V, W, Y, Z

6 0
3 years ago
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