Category ‘8th Grade’

Solution:

1. 1L = 1.057 fl qt
2. 1L = 1000 ml
3. 1.079 fl qt = 1.079 x 1.057 L = 1.140503 L
4. 1.140503 L = 1140.503 ml

Solution:

1. Start with an equation like 3x + 5y = 15
2. Move 3x to the other side, so 5y = 15 – 3x
3. Divide both sides by 5, so y = 3 – x
4. Another way of writing this is y = -.6x + 3, or y=mx = b, where m=-0.6 and b = 3
5. If m = -0.6, that means that the slope = -0.6

Solution:

1. The base of the 3D rectangle is in the shape of a 2D rectangle.
2. Multiply the length of this 2D rectangle by its width to let the area

Soluton:

We found the following picture of what’s inside a flower at

http://www.eduplace.com/science/hmxs/ls/pdf/2rs_1_3-3.pdf

Solution:

A function is a type of relation, i.e. it relates one set of numbers to another. The function (call it “f”) takes any member of one set (call it “x”) and connects it to a unique member of another set. Symbolically, we write this unique member of the other set as f(x). You can say “f of x” when you see this rotation.

Now, we can write the function as a rule or equation. For example, f(x) = 2x. In this example, each value of x as assigned double its value by the function f.

Here’s how you solve this type of question:

1. Start with an equation like 3x + 5y = 15
2. Move 3x to the other side, so 5y = 15 – 3x
3. Divide both sides by 5, so y = 3 – x
4. Another way of writing this is y = -.6x + 3, or y=mx = b, where m=-0.6 and b = 3
5. If m = -0.6, that means that the slope =-0.6



Here’s how you solve this type of question:

1. The base of the 3D rectangle is in the shape of a 2D rectangle.
2. Multiply the length of this 2D rectangle by its width to let the area

Solution:

Volume of wood is 72*54*48 = 186,624 cmcube; the mass would be 186,624 * 0.9 = 167,961.6 g.

Solution:

Please take a look at these two links:

http://www.worldwater.org/data20062007/Table3.pdf

http://www.nature.com/nature/focus/water/map.html

Solution:

1. Total number of complaints = 8400
2. Percentage of the above that were related to auto repair and service = 10.3%
3. Number of complaints related to auto repair and service =3D 8400 x 10.3% = 8400 x 0.103 = 865

Please note that we rounded off the answer to the nearest integer since the number of complaints must be an integer.