Answer:
iron
Explanation:
Increasing the number of coils of wire wrapped around the nail increases the strength of the electromagnet, as measured by the number of paper clips the magnet can pick up
Answer:
Water can spread germs through bacteria.
Explanation:
Bacteria can live in water and can spread to new locations when water is moved.
AB is the melting point of the substance. It takes time for the molecules to gain enough kinetic energy to change from solid to liquid state. BC is when the substance is in liquid form, the temperature gradually rises until it reaches it's boiling point
Answer:
Climate is determined by averaging the seasonal weather conditions for a region over a period of many ______ years
Choose the correct association for: dense bushes rain forest or jungle
Choose the correct association for: plains savanna
<span>3 equations in slope intercept form:
y = -2/3·x + 1
y = -8x + 14
y = 3x - 11/2
Solution: (39/22, -2/11)
We have a set of 3 equations, that we can create 3 lines from. So let's do so:
2x + y = 3 â’2y = 14 â’ 6x
Line 1:
2x + y = 3 - 2y
2x = 3 - 3y
2x - 3 = -3y
-2/3·x + 1 = y
y = -2/3·x + 1
Line 2:
2x + y = 14 - 6x
y = 14 â’ 8x
y = -8x + 14
Line 3:
3 - 2y = 14 â’ 6x
-2y = 11 â’ 6x
y = -11/2 + 3x
y = 3x - 11/2
So the 3 equations are:
(1) y = -2/3·x + 1
(2) y = -8x + 14
(3) y = 3x - 11/2
Let's subtract equation (3) from equation (2) and solve for x.
y = -8x + 14
y = 3x - 11/2
0 = -11x + 19.5
11x = 19.5
22x = 39
x = 39/22
We now have an X value of 39/22. Let's verify that the y values match.
(1) y = -2/3·x + 1
y = -2/3·39/22 + 1
y = -78/66 + 1
y = -13/11 + 1
y = -2/11
(2) y = -8x + 14
y = -8·39/22 + 14
y = -312/22 + 14
y = -156/11 + 14
y = -2/11
(3) y = 3x - 11/2
y = 3·39/22 - 11/2
y = 117/22 - 11/2
y = 117/22 - 121/22
y = -4/22
y = -2/11
And they all match.</span>
