The number of students in a chess club decreased from 18 to 12 what is the percent decrease? round to the nearest percent? answer key

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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eve and marks ratios are equivalent

step-by-step explanation:

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

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