Answer: 89,000
Step-by-step explanation:
4 + y = 19
y = 19 - 4
y = 15

The Angle formed by an arc on the centre of the circle is double the angle made by the same arc on the circumference of the circle.
So,

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Answer:

Step-by-step explanation:

Answer:
Step-by-step explanation:

All the variables on the right are being multiplied together then the whole mess is being divided by 2. Let's get rid of the 2 first. The undoing of division is multiplication, so we will begin by multiplying both sides by 2 to get

Next we will move the m. The undoing of multiplication is division. So we divide both sides by m to get

The undoing of a square is to take the square root, so we will do that to both sides giving us, finally