Well, the first one, I have never worked with before so I'm sry but I can't help you with that one. 3y + x = 4 (x=1) 2y - x = 6 (x=8)
Answer:
At 10 minutes the phone call costs the same for both companies. Hopefully this was helpful. :)
Step-by-step explanation:
Create equation:
f(x)=3x+35
f(x)=2x+45
x=minutes
Solve:
Company A: Company B:
0 35 45
1 38 47
2 41 49
3 44 51
4 47 53
5 50 55
6 53 57
7 56 59
8 59 61
9 62 63
10 65 65
Answer: 
Step-by-step explanation:
See the image attached, where "x" represents the height in feet of the hot air balloon.
Notice that:
To find the lenght of the side BC of the right triangle, you need to use the following Trigonometric Identity:
Observe that:
Substituting values and solving for "BC", you get:
Therefore "x" is:
Answer:
60
Step-by-step explanation:
If all triangles equal 180 degrees, then all you have fo do is divide 180 by the number of points a triangle has
Answer: x = 9, y = -14
Explanation:
4x + y = 16
2x + y = -2<span>
</span> 4x + y = 16
- 2x + y = -2
-------------------
2x + 0 = 18
-------------------
2x = 18
x = 9 <<<<< ¯\_(ツ)_/¯ For the value of x
Plug x = 9 into 2x + y = -2
2(9) + y = -2
12 + y = -2
y = -14 <<<<< ¯\_(ツ)_/¯ For the value of y
