)a coin is tossed 13 times. a) how many different outcomes are possible? 2^8 b) how many different outcomes have exactly 4 heads? 70 c) how many different outcomes have at least 2 heads ? 247 d) how many different outcomes have at most 4 heads? 163

Explanation:

a) A coin has two sides, therefore the total outcome possible when a coin is tossed is 2 i.e Head (H) and Tail (T)

outcome of two coins will be 4 i.e 2^2

Outcome of three coins will be 8 i.e 2^3 and so on. Since its following a trend, the outcome when 'n' coins is tossed will be 2^n.

Using the general formula, the possible outcome when a coin is tossed 13 times will be "2^13"

b)

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever