Mathematics: F) A wall in a house is currently 12 feet long and a contractor wants to add 108 inches to the wall. How long will the extended wall be in yards? (A) 5yards (B) 7yards (C) 8yards (D) 10yards (E) 17yards

F) A wall in a house is currently 12 feet long

Ответ:

notchasedeibel6575

18.01.2022

Mathematics

The coordinates of point X that divides the line in 1:4 are: (3,8/5)

Step-by-step explanation:

When a point divides a line with coordinates (x1,y1) and (x2,y2) in ratio m:n,

the coordinates of point are given by:

$(x,y) = (\frac{mx_2+nx_1}{m+n} , \frac{my_2+ny_1}{m+n})$

Given points are:

(x1,y1) = (5,1)

(x2,y2) = (-5,4)

Putting the values in the formula

$X(x,y) = (\frac{(1)(-5)+(4)(5)}{1+4} , \frac{(1)(4)+(4)(1)}{1+4})\\= (\frac{-5+20}{5}, \frac{4+4}{5})\\=(\frac{15}{5}, \frac{8}{5})\\=(3,\frac{8}{5})$

Hence,

The coordinates of point X that divides the line in 1:4 are: (3,8/5)

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F) A wall in a house is currently 12 feet long and a contractor wants to add 108 inches to the wall. How long will the extended wall be in yards?

(A) 5yards

(B) 7yards

(C) 8yards

(D) 10yards

(E) 17yards

Ответ:

Ответ:

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