Answer:
C. 18π
Step-by-step explanation:
s = r*θ = 20*(9π/10) = 18π
s - arc length
θ - angle in radians
r - radius
The problem can be translated into an equation that is something like 4/5 + 3/x = 1/2
we cannot have x equal to zero because the number can be infinite.
So the LCD here is 10x, so multiply both sides by that to get:
8x + 30 = 5x
Subtract 5x and 30 from both sides:
3x = -30
divide:
x = -10
The solution isn't zero so there is a solution.
If the temperature of the egg is x, then if x is below 23 (x<23), they rarely hatch. If x is greater than 33 (x>33), they also rarely hatch. For them to not rarely hatch, then x must be not below 23 (greater than or equal to) and not above 33 (less than or equal to), resulting in our compound equality being
23≤x≤33 and our pair of simple inequalities being x≥23 and x≤33.
5/28 is already in simplest form<span />
Rule: whatever you do to the left side, you must do on the right side. This means when you minus 80 on the left, you must minus 80 on the right as this continues to equate the two sides.