Answer:
1) James brother is 10-x years old
2) James was 3 years ago x-3 years old
3) James brother was 3 years ago 7-x years old
4) 3(x-3)=7-x
5) James is 4 years old, his brother is 6 years old
Step-by-step explanation:
3) 10 - x - 3 = 7 - x
5) 3* James age 3 years ago = James brothers age 3 years ago
<=> 3*(x-3) = 7-x
<=> 3x - 9 = 7 - x
<=> 4x = 16
<=> x = 4
The answer would be (x+2) (x+1)
Answer:
Step-by-step explanation:
6y+4-3y=-5+y+17
6y-3y-y= -5+17-4
2y=8
y=4
Answer: y2-y1/x2-x1=-1-3/3-3=-4/0=undefined.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let L represent the length of the rectangular porch.
Let W represent the width of the rectangular porch.
The area of the rectangular porch is expressed as LW.
Bills new porch is rectangular with an area of 50 square feet. Therefore,
LW = 50 - - - - - - - - 1
if the length is two times the width, it means that
L = 2W
Substituting L = 2W into equation 1, it becomes
2W × W = 50
2W^2 = 50
W^2 = 50/2 = 25
W = √25 = 5
LW = 50
5L = 50
L = 50/5 = 10
The perimeter of he rectangle is
Perimeter = 2(L + W)
Perimeter = 2(10 + 5) = 2 × 15
Perimeter = 30 feet
