F is a function. When doing an equation, you don't have to do anything with F(It is not a number). X is the unknown variable (it is a number). The function (F) of the unknown variable (X) equals 7
Answer:
{x,y} = {-2,2}
Step-by-step explanation:
Solve equation [2] for the variable y
7y = 7x + 28
y = x + 4
Plug this in for variable y in equation [1]
-8x + 4•(x +4) = 24
-4x = 8
Solve equation [1] for the variable x
4x = - 8
x = - 2
By now we know this much :
x = -2
y = x+4
Use the x value to solve for y
y = (-2)+4 = 2
Solution :
{x,y} = {-2,2}
and this intersects at only one point so your answer is A
2b is basically 2 * b. When a number (called the coefficient) and a variable come together they multiply.
Answer:
x = 6, y= -6
Step-by-step explanation:
-4x - 2y=-12
4x + 8y = -24
Add the two equations together to eliminate x
-4x - 2y=-12
4x + 8y = -24
------------------------
6y = -36
Divide each side by 6
6y/6 = -36/6
y = -6
Now we can find x
4x+8y = -24
4x +8(-6) = -24
4x -48= -24
Add 48 to each side
4x -48+48 = -24+48
4x = 24
Divide each side by 4
4x/4 = 24/4
x =6
Answer: 9. triangles measure to 180 degrees
10. 90 degrees
11. 180 degrees
12. angles that measure to 90 degrees
13. angles that measure to 180 degrees
14. 148 degrees
15. 68 degrees
1. a fraction that uses the longest length on a shape
2. 0.3125
3. 0.33333333333
4. 30
5. 0.25
6. 60
7. 15
8. 18
Step-by-step explanation:
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