CBEST Test with Complete Solutions

CBEST Test with Complete Solutions supplementary angles - Answer-Two angles whose sum is 180 degrees Triangle - Answer-a three-sided polygon: 180° polygon - Answer-A closed plane figure made up of line segments: 360° pentagon - Answer-5 sided polygon: 540° hexagon - Answer-6 sided polygon: 720° heptagon - Answer-7 sided polygon: 900° octagon - Answer-a polygon with 8 sides: 1080° Formula to convert a decimal to a percent - Answer-Decimal⋅100=Percent Formulas to convert a percent to decimal - Answer-Percent÷100=Decimal Formula for area of a circle - Answer-Area = π⋅radius² or πr² Formula for circumference of a circle - Answer-Circumference = π⋅diameter or πd=2⋅π⋅radius or 2πr Formula for distance - Answer-distance = rate x time formula for rate - Answer-rate= distance/time formula for time - Answer-time = distance/speed Formula to find the percentage of a number - Answer-Part/Whole=percentage/100 is/of=percentage/100 Relationship among the side lengths of a right (90°) triangle - Answer-a²+b²=c² (a and b are the shorter side lengths and c is the hypotenuse or diagonal) Percentage Change - Answer-(Newvalue-Oldvalue)/Oldvalue⋅100% slope - Answer-"rise over run," or, the difference in y values divided by the difference in x values. Recall that any two points on a line can be used to calculate the slope of the line. Perimeter - Answer-the sum of the lengths of the sides of a polygon. P=x+x+y+y area - Answer-measurement of the surface of a shape. x times y Volume - Answer-The amount of space an object takes up probability - Answer-likelihood that a particular event will occur. (Number of successful events) (Number of possible events) Units could be used to describe volume - Answer-ounces, cups, pints, quarts, and gallons. units that we use to measure length - Answer-millimeter, centimeter, meter, and kilometer. Density - Answer-calculated by the dividing the mass by the volume, so that density is measured as units of mass/volume, often g/mL Mass - Answer-A measure of how much matter is in an object. kilograms, grams, milligrams. At sea level, water boils at what temperature - Answer-100 C or 212 F Weeks in a year - Answer-52 three kinds of "averages" - Answer-mean, median, mode Mean - Answer-add up all the numbers and then divide by the number of numbers. median - Answer-the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order from smallest to largest, so you may have to rewrite your list before you can find the median.