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Posts Tagged with ‘8th Grade’

1.079 fl qt = ? ml. My book says that 1L = 1.057 fl qt. but how do i get the L to ml.

Friday, October 1st, 2010

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

I need to know how to do problems like this, I want to know how to solve, and simplify them, and also finding slopes. Like these kinds of problems(Write the equation, 3x + 5y = 15, in the slope intercept form (y = mx + b))

Friday, July 23rd, 2010

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

How do you find the area of a base on a 3-D rectangle?

Friday, July 23rd, 2010

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

What is inside a flower?

Thursday, July 22nd, 2010

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

How do I rewrite an equation using function rotation?

Monday, July 19th, 2010

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.

I need to know how to do problems like this, I Want to know how to solve, and simplify them, and also finding slopes. Like these kinds of problems (Write the equation, 3x + 5y = 15, in the slope intercept form (y = mx + b))

Saturday, July 17th, 2010

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



How do you find the area of a base on a 3-D rectangle?

Saturday, July 17th, 2010

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

A close rectangular box measuring 72cm by 54cm by 48cm externally is made up of wood find the capacity of the box in litres,the volume of woodused in making the box,and the mass of the box if the density of the wood used is 0.9g/cmcube

Saturday, July 17th, 2010

Solution:

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

Name four countries with the least access to safe drinking water?

Saturday, July 17th, 2010

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

Of 8400 adults who registered complaints with the letter Business Bureau, 10.3% complained about auto repair and service. How many complaints were made about auto repair and service?

Saturday, July 17th, 2010

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.