A "true proportion" is when you know for a fact the equations are equivalent. You can easily multiply or divide without doing any work.
To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero).
4x = 10y + 20
10y = 4x - 20
y = 4/10x - 2
Solution: y intercept is -2
The measure of the central angle is 89.95 degree or 1.57 radians if the radius of the circle is 7 cm.
<h3>What is a circle?</h3>
It is described as a set of points, where each point is at the same distance from a fixed point (called the centre of a circle)
We have a length of an arc of a circle of radius 7 is approximately 10.99 cm.
The radius r = 7 cm
The arc length l = 10.99 cm
We know,
l = rθ
θ is the central angle.
θ = l/r = 10.99/7 = 1.57 radians
To convert 1.57 radians into the degree multiply it by 180/π
θ = 89.95 degree
Thus, the measure of the central angle is 89.95 degree or 1.57 radians if the radius of the circle is 7 cm.
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It would be 9 buddy. Negative divided by negative turns into positive. 45 divided by 5 is 9.