Answer:
(x−7)(x+5)=0
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
x−7=0x+5=0
Set the first factor equal to 0 and solve.
x=7
Set the next factor equal to 0 and solve.
x=−5
The final solution is all the values that make (x−7(x+5)=0 true. x={7,−5}
Answer:
The area of a rectangle can be found by multiplying it's length by the height of the rectangle.
Step-by-step explanation:
Answer:
Slope=-4/3. Y-intercept=0
Step-by-step explanation:
Y=Mx+B
Y=-4/3x+0
Answer:
The number = 45
Step-by-step explanation:
Let the 10s digit = x
Let the units digit = y
10*x + y = 5(x + y) Start here: remove the brackets
10*x + y + 9 = 10y + x Subtract y and 10x from both sides
Using the first equation
10x + y = 5x + 5y
5x + y - 5y = 0
5x - 4y = 0
5x = 4y
y = 5/4x
From the second equation
9 = 9y - 9x
1 = y - x Substitute y = 5/4 x
1 = 5/4x - x
1 = 1/4 x
x = 4
y = 5/4 * 4
y = 5.
Answer:
6x+3x=9x
2+7=9
9(x+1)
Distributive property
9x + 9
(im not completly sure this is the right answer)
