<span>Let x=one number and x+12= the other number. Together the numbers=54. Set up the equation: x+x+12=54; Combine the variables; 2x+12=54; Subtract 12 from both sides of the equation; 2x=42; Divide both sides of the equation by 2; x=21 is one number and 21+12=33 is the other number. Check: 2(21) +12=54; 42+12=54; 54=54.</span>
Answer:
A.0
Step-by-step explanation:
y=4x²- 9x + 9
The function will intersect the x-axis when y = 0.
4x² - 9x + 9 = 0
a=4, b= -9, c=9
D=b² - 4ac = (-9)²- 4*4*9=81 - 144= - 63
D= -63, D<0, so the equation
4x² - 9x + 9 = 0 does not have real roots. That means that function y=4x²- 9x + 9 does not intersect x- axis. So, answer is A. 0.
x = 9/2
Get variable on one side of equation and solve"
x/12 = 3/8
x = (3/8)(12)
x = 9/2
If both lines are same length then 7+3=10
29.999 sq. feet or 30 sq. feet
Step-by-step explanation:
The thing to remember here is the
- The conversion factor of Inch into feet
- Understanding of scale and model
- Rectangle area
Proceeding with the question
Width of the rectangle=3 inch
Height of the rectangle=4 inch
We know the area (rectangle)= height* width
Area=12 inch
²
We know that scale= sample area/original area
1/30=12/original area of the room
room area= 360 inch
²
Since the final area is needed in sq. feet
We know that 1 inch= 0.08333 feet
Thus 360 inches = 29.999 square feet or 30 square feet (approx.)
