The price of mangoes was $12 per kilo in November but has increased to $18 per kilo in January
Express this change as a percentage.
Show working out

The percentage of price of mangoes was increased by 15% from November to January.

Step-by-step explanation:

Therefore, the change in percentage is percentage increase.

Percentage increase = (difference between two prices / lower price) × 100

⇒ (18-12 / 12) × 100

⇒ (6 / 12) × 100

⇒ 50 %

Therefore, the percentage change from November to January is increase of 50 %.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice