Answer: 34 degrees
Step-by-step explanation:
The starting temperature was -5 degrees at 5am, and after two hours, the temperature was 34 degrees at 7am. The temperature increased by 39 degrees, how did we get this answer?
You add -5 and 39
-5 + 39 = 34
A tip for adding negatives:
When you get a problem similar to -5 + 39, you can actually flip them around if you need an easier understanding. So it would be 39 - 5. Both equations still equal 34 as long as you keep the values of each number!
"<span>Start by setting up the standard equation for perimeter of a parallelogram, P=2w+2h (these variables of course being width and height). </span>
Now, substitute in what you know...
<span>The problem tells us that width is equal to height minus four. This means that, in order to keep only one variable in this problem, we will write width as h-4. </span>
<span>The problem also tells us that 72 is the perimeter, so we substitute that for P. </span>
72=2(h-4)+2h
<span>Now solve from here. </span>
<span>(Distribute first) </span>
72=2h-8+2h
(Combine like terms)
72=4h-8
80=4h
(Isolate h)
80/4=h
<span>20=h"</span>
The answer is the first chart which would be A
Answer:
3rd option
Step-by-step explanation:
Answer:
Infinitely many.
Step-by-step explanation:
Combine like terms as shown below
x + <em>12</em> + 2x = <em>20</em> + 3x - <em>8</em>
Side one
x + 2x = 3x
Side two
<em>20 - 8 = 12</em>
Set the equation up again
3x + <em>12 </em>= 3x + <em>12 </em>
The equation is the same on both sides which means that the equation cancels itself out.
3x - 3x = 0 and 12 - 12 = 0
0 = 0 so there is infinitely many solutions because both sides equal the same thing.
