11. Sheena made a scale drawing of her classroom using a scale of 1 inch - 10 feet. One wall of the classroom
in the drawing is 4 inches long. Which proportion
can be used to find x, the length of the actual wall, in
feet?
1 4
A.
10
1
B.
4 10
4 1
C.
12x 10
12x 1
D.
10 4
х
х
13. Maria earned three vacation days after working at

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !