A rectangular area is to be fenced in along a straight river bank as illustrated. The length of the fenced-in area is to be 77 feet greater than the width, and the total amount of fencing to be used is 6161 feet. Find the width and length of the fenced-in area.

width = 11.75 feet  and length is 18.75 feet

Step-by-step explanation:

The length of the fenced-in area is to be 7 feet greater than the width, and the total amount of fencing to be used is 61 feet.

Let w be the width of the rectangle

length is 7 feet greater than the width. so length is w+7

Total amount of fencing is 61 feet. Perimeter = 61 feet

subtract 14 from both sides

width = 11.75 feet  and length is 11.75+7=18.75

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

answer is c

step-by-step explanation:

81/12=324/x

x=48