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Sample Practice Test Questions
Which of the following saws would you use if you're cutting wood along the grain?
ripsaw
The ripsaw delivers maximum efficiency at cutting with or along the grain (ripping).
Which of the following is a decomposer?
fungi
Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.
Atoms of an element whose atoms can vary in the number of neutrons in their nucleus are called which of the following?
isotopes
The atomic mass of an element listed in the Periodic Table represents the average mass of a single atom of that element and is measured in atomic mass units (amu). This number is an average as some elements have isotopes with atoms that vary in their number of neturons and, therefore, differ in weight.
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
commutative
The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.
Solve for x:
x2 + 6x - 13 = -x + 5
The first step to solve a quadratic expression that's not set to zero is to solve the equation so that it is set to zero:
x2 + 6x - 13 = -x + 5
x2 + 6x - 13 - 5 = -x
x2 + 6x + x - 18 = 0
x2 + 7x - 18 = 0
Next, factor the quadratic equation:
x2 + 7x - 18 = 0
(x - 2)(x + 9) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (x - 2) or (x + 9) must equal zero:
If (x - 2) = 0, x must equal 2
If (x + 9) = 0, x must equal -9
So the solution is that x = 2 or -9
Which of the following represents the largest value?
1 ML
Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.