Write the equation of a circle that has a center at the origin and a radius with a length of 4 inches
2 answers:
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Remark
The very easiest way to do this is by substitution. The ys are isolated on the left. When you equate what's on the right, you can solve this for 1 variable, the xs.
Substitute and solve
8x - 9 = 4x -1 Subtract 4x from both sides.
8x - 4x - 9 = - 1
4x - 9 = - 1 Add 9 to both sides.
4x = - 1 + 9
4x = 8 Divide by 4
x = 8/4
x = 2
Solve for y
Use either equation to solve for y.
y = 4x - 1
y = 4(2) - 1
y = 8 - 1
y = 7
Answer
The equations intersect at (2,7)
Part B
See the graph below. Notice the intersect point.
The very easiest way to do this is by substitution. The ys are isolated on the left. When you equate what's on the right, you can solve this for 1 variable, the xs.
Substitute and solve
8x - 9 = 4x -1 Subtract 4x from both sides.
8x - 4x - 9 = - 1
4x - 9 = - 1 Add 9 to both sides.
4x = - 1 + 9
4x = 8 Divide by 4
x = 8/4
x = 2
Solve for y
Use either equation to solve for y.
y = 4x - 1
y = 4(2) - 1
y = 8 - 1
y = 7
Answer
The equations intersect at (2,7)
Part B
See the graph below. Notice the intersect point.
Answer:
En matemáticas, un número primo es un número natural mayor que 1 que tiene únicamente dos divisores distintos: él mismo y el 1. Por el contrario, los números compuestos son los números naturales que tienen algún divisor natural aparte de sí mismos y del 1, y, por lo tanto, pueden
factorizarse .
Step-by-step explanat
