-2x +12 < -4
-2x +12 -12 < -4 - 12
-2x < -16
-2x divided by -2 > -16 divided by -2
x > 8
Answer:
I think its the rule RHS or SAS that indicates that x is 180ft (scale factor of 1.5)
Step-by-step explanation:
first do 135/90 to find the scale factor of 1.5
then to find x, multiply 120 by the scale factor.
The answer fam is................. x=72
Answer:
A.
Step-by-step explanation:
If
AND
y = x + 7, then by the transitive property of equality:
![x^2+2x+7=x+7](https://tex.z-dn.net/?f=x%5E2%2B2x%2B7%3Dx%2B7)
We can solve for the values of x by getting everything on one side of the equals sign and then solving for x:
![x^2+x=0](https://tex.z-dn.net/?f=x%5E2%2Bx%3D0)
We can factor out the common x to get:
x(x + 1) = 0
which tells us by the Zero Product Property that either
x = 0 and/or x + 1 = 0 and x = -1
We are expecting 2 solutions for x since this is a second degree polynomial. We will sub both -1 and 0 into y = x + 7 to solve for the corresponding values of y
y = 0 + 7 so
y = 7 and the coordinate is (0, 7)
y = -1 + 7 so
y = 6 and the coordinate is (-1, 6)
Let's call the three numbers x, y, and z.
The numbers are 3, 12, and 5.
x + y + z = 20
y = 4x
x + z = 8
We can rewrite the first equation because y is 4x, so
x + 4x + z = 20
5x + z = 20
And now we can use simultaneous equation rules to solve
5x + z = 20
x + z = 8
5x + z = 20
5x + 5z = 40
(subtract)
-4z + -20
÷ -4
z = 5
x + z = 8
x + 5 = 8
x = 3
y = 4x
y = 4 × 3
y = 12
I hope this helps!