Answer:
-4x + 12 = 20 is incorrect. she added 12 to 20 instead of subtracting 12 from both sides.
Step-by-step explanation:
It should have been, write problem
-4(x - 3) = 20
Use distributive property.
-4x + 12 = 20
subtract 12 from each side
-4x =8
divide each side by -4
x = -2
Answer: 36
Step-by-step explanation:
42 divided 7/6 = 42 multiplied by 6/7; 42 x 6 = 252/ 7 = 36
Answer:

Explanation:
The given addition exercise is:

The LCM of the denominator (5 and 3) = 15
Multiply 2/5 by 3/3

Multiply 1/3 by 5/5

The addition becomes

Therefore, we can fill in the vacant boxes as shown below:
Answer:
The length of rectangle is
The width of rectangle is
Step-by-step explanation:
Let
x-----> the length of rectangle
y----> the width of rectangle
we know that
The area of rectangle is equal to


so
-----> equation A
-----> equation B
substitute equation B in equation A and solve for y

using a graphing calculator
The solution is

Find the value of x
----->
Y-intercept (0, 1)
Equation of asymptote y=0
Equation of asymptote can also be called horizontal asymptote.
It means the place where the line almost meets but actually not touching the place. The line almost touches y=0 but it actually does not touch it.