You need to learn this on your own. What will happen on a test you will not know what you learned about.
Answer:
1st one is true, 2nd is true and 3rd is false
Step-by-step explanation:
Answer:
b=20/3
Step-by-step explanation:
i assume this is what you want, what b equals. So first set both equations equal to each other and then just algebraically manipulate them.
b-20=-2b Here add 20 to both sides and 2b to both sides
3b=20 Here divide both sides by 3
b=20/3
Let me know if you need any more help.
We need to find the points that are solutions, that is, the points that lie in the shaded region.
Let's try the ordered pair (1,2). This isn't in the shaded region, so it is not a solution of the system.
The same goes for (-10, 10) and (-2,0).
But when you plot (0,10), it does lie in the shaded region, so it's a solution of the system of inequalities.
Step-by-step explanation:
6x-7+3x-29=180 (corresponding angle)
9x-36=180
9x=180+36
9x=216
x=24.
6x-7=8y+17
144-7-17=8y.
8y=120
y=15.
therefore, x=24°, y=15°.
hope this helps you.