Answer:

Step-by-step explanation:
We have:

To solve, we will isolate the x variable. Therefore, subtract 7 from both sides:

Divide both sides by 2:

Take the square root of both sides. Since we’re taking an event root, we will need plus/minus. Therefore:

Therefore, our solutions are:

Answer:
60 degrees
Step-by-step explanation:
As we know that a circle is 360 degrees, and as line AB bisects the circle, then the resulting "semi-circle" is 180 degrees. As we know that angle AC is 120 degrees, it's simple subtraction, to find that 180-120 is 60. Therefore, the value of <em>x</em> must be 60 degrees.
Hope this explanation helped!
Answer:
D. 21
Step-by-step explanation:
28-21=7
28-7=21
Answers:
Equation 1: B
Equation 2: D
Equation 3: A
Equation 4: C
*I am pretty sure are right
Answer:
448
Step-by-step explanation:
55 Divided by 880 is 448