<span>I'm a little rusty, but I'll do what I can!
-21x -19 =
</span><span>x +2 =
</span><span>11.8 + 2.6y =
</span><span>-54m + 87wm + 35w =
3y + 115 =
Please let me know if you need a little explanation. But I would prefer if you didn't. lol</span>
Answer:
D
Step-by-step explanation:
For a circle, the equation of the circumference is c = π * 2r (radius). Since in this case, the circumference is 15.3, that means π * 2r = 15.3. I'm going to assume that pi is 3.14 because the four answers aren't particularly close to each other. This means that 2r = approx. 4.872. If you then divide both sides by 2 you get r = approx. 2.436, which is closest to answer D.
This is not the best question I've ever seen. The wording is the problem, and it's not your fault. The melting point of Krypton is about - 160 oC. It means that numerically the melting point of Krypton is 4 times lower than that of mercury.
Krypton = 4*M
M = - 39
Krypton = 4*-39
Krypton = - 156o C
Now you want to make it something like K(1/4) = - 39 which would be fine. You can't use - 1/4. If you do, your answer will come out to be + 156 which is not what you mean. If this was a multiple choice question, your answer would be the second best one.
Answer:
Step-by-step explanation:
The equation of a straight line can be written as 
.
With the pair of coordinates (coordinates are written in the form 
) , the following can be written:
To solve for a variable, we can use elimination:
(subtract the second equation from the first)
(
is eliminated)
To solve for the other variable, we can use substitution:
is the linear equation for the line that passes through the points 
and 
