2x + 3y = 9
x + 5y = 8....multiply by -2
----------------
2x + 3y = 9
-2x - 10y = -16 (result of multiplying by -2)
---------------add
-7y = - 7
y = -7/-7
y = 1
x + 5y = 8
x + 5(1) = 8
x + 5 = 8
x = 8 - 5
x = 3
solution is (3,1)
Answer:
In the sciences, many times it is necessary to be able to interpret graphs as well as be able to graph certain equations. Often data is available in a graphical format and you must be able to extract the necessary information. Other times, it may be helpful to plot an equation in order to fully understand a problem. However, graphing can be difficult for some students. The format in this section is a little different. The first part will be simply showing what some special equations look like in graphical form and the second part will be a series of questions to help you understand graphs better.
Step-by-step explanation:
Hi! i think it’s the last one (270 degrees counterclockwise and 1 unit to the right)
if it was 180 degree, the shape would be in quadrant II, not quadrant III
Answer:
30.25pi in terms of pi
94.985 In terms of 3.14
Step-by-step explanation:
Okay since the circumference is 11pi we know d = 11.
Meaning r = 5.5
We can solve this in terms of pi or 3.14, for this I will use both.
The formula for an area of a circle is pi*r^2
So,
5.5 * 5.5 = 30.25.
In terms of pi, the answer would be 30.25pi
In terms of 3.14 the answer would be 94.985
:)
Answer:
8+11 would be 19
Step-by-step explanation:
