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Mathnasium Review Exam Questions and Answers A+ Graded
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Mathnasium Review ExamQuestions and Answers A+
Graded
What is a real number? - -any number without 'i'
-what is a constant? - -specific fixed number
-What is an integer? - -a whole number
-What does quotient mean? - -to divide
-Complementary angles - -add to 90 degrees
-supplementary angles - -add to 180 degrees
-On a 30,60,90 triangle, what are the sides starting smallest? - -x, xroot3,
and 2x
-On a 45,45,90 triangle, what are the side ratios? - -x, x, and xroot2
-How do you add vectors together? - -<x,y>+<a,b>=<x+a,y+b>
-domain - -x values
-range - -y values
-how do you add matrices? - -Simply add the corresponding places (if they
are different sizes then it is undefined)
-how do you multiply matrices by a constant? - -just multiply every number
by the constant and leave it in the same shape
-how do you multiply matrices by another matrix? - -there should be the
same number of rows as the first matrix and the same number of columns as
the second, and do almost a foiling method
-How do you simplify a matrix? - -I a b I
I c d I = ad-bc
-How do you remember absolute value inequalities? - -greatOR, less thAND
, -What should you always be on the lookout for regarding squares and
square roots? - -two answers
-slope of a horizontal line - -zero
-slope of a vertical line - -undefined
-what is the discriminant? - -b^2-4ac
-What does a discriminant tell you? - -if 0=1 solution
if + = 2 real solutions
if - = 2 complex solutions/no real solutions
-What slopes do perpendicular lines have? - -negative reciprocal
-What is a scalene triangle? - -all different lengths/angles
-equation of a circle - -(x-h)²+(y-k)²=r²
-volume of a sphere - -4/3πr³
-volume of a cylinder - -πr²h
-volume of a cone - -1/3πr²h
-A triangle formed by three points on a circle with the hypotenuse being the
diameter will always be a... - -right triangle
-area of a circle - -πr²
-Circumference of a circle - -2πr
-what are parallelograms - -two sets of parallel lines with no right angles
-what is a rhombus - -a parallelogram with 4 congruent sides
-area of a trapezoid - -1/2(b1+b2)h
-how do you find the interior angles of a polygon - -n=number of sides
(n-2)180
-what is the distance formula - -d = √(x2 - x1)^2 + (y2 - y1)^2
-surface area of a sphere - -4πr²
-surface area of a cylinder - -2πrh+2πr²
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