Basic Math
Which of the following is equivalent to (8x-9) - (3x+7)?
a) 5x-16
b) 5x+16
c) 5x-2
d) 11x-2
Is the equation 3(2x-4)=-18 equivalent to 6x-12=-18?
a) Yes, the equations are equivalent by the Associative Property of Multiplication
b) Yes, the equations are by the Distributive Property of Multiplication over Addition
c) Yes, the equations are equivalent by the Commutative Property of Multiplication
d) No, the equations are not equivalent
b) Yes, the equations are by the Distributive Property of Multiplication over Addition
An octahedron has how many edges?
a) 6
b) 8
c) 12
d) 20
Which of these functions has greatest y-intercept?
a) f(x) = 4cos(x)+2
b) f(x) = 5x^2+3x+4
c) f(x) = 5x+2
d) f(x) = 3(2^x)
a) f(x) = 4cos(x)+2
A.) 2(2/3) B.) 1/2 C.) 3(1/3) D.) 3/4
A.) 2(2/3) Explain why?
Which of the following graphs represents a relation that isn't a function of x?
a) a curve
b) a line
c) a circle
d) a parabola
c) a circle
What is the number of lines of symmetry for a regular octagon?
a) 4
b) 6
c) 8
d) 10
What is pi/3 in degrees?
a) 45°
b) 90°
c) 60°
d) 0°
c) 60°
Andy and Genny ordered a large pizza that had been cut into equal-sized pieces. Andy ate one half of the pizza and Genny ate one-fourth of it. If there were 5 pieces left, how many pieces were there to begin with?
A.) 12 B.) 16 C.) 20 D.) 24
C.) 20 explain why?
What are the possible values x in |12-4x| = 2
a) 2.50 < x < 3.50
b) x = -2.50 or x = -3.50
c) x = 2.50 or x = 3.50
d) -3.50 < x < -2.50
c) x = 2.50 or x = 3.50
An 18-inch diameter pizza is cut into 12 slices. What is the distance around one slice?
a) 18+3pi/2
b) 18+pi/2
c) 18 + 9pi/2
d) 18+9pi
a) 18 + 3pi/2
A School has 40 teachers and each teacher teaches 4 classes. Each class has 30 students and one teacher. If each student takes 5 classes how many students does the school have?
A.) 960 B.) 1000 C.) 1200 D.) 1500
A.) 960 explain why?
The graph of the equation Ax + 3y = -3 is a line that passes through (2,-5). What is the value of A?
a) 3
b) 5
c) 6
d) 7
c) 6
Given a triangle, where 'a' and 'b' are sides of the triangle and (theta) is the angle between those sides, what angle (theta) will maximize the area of the triangle?
a) pi/2
b) pi/4
c) pi/6
d) 3pi/4
a) pi/2
One ball is drawn from a box containing 4 white balls, 7 red balls, and 5 blue balls. What is the probability that the ball is not red?
A.) 1/4 B.) 5/16 C.) 9/16 D.) 1/2
C.) 9/16 explain why?
Which function represents the graph having x-intercepts at -3 and 2 and passing through (3,12)?
a) y = (1/2)(x-2)(x+3)
b) y = (1/2)(x-3)(x+2)
c) y = 2(x+3)(x-2)
d) y = 2(x+2)(x-3)
c) y = 2(x+3)(x-2)
If theta is an angle in standard position whose terminal side passes through (-3,4), what is the value of cos(theta) + tan(theta)
a) -8/15
b) -29/15
c) 1/5
d) 1
b) -29/15
What is cos(720°) in radians?
a) 0
b) 3pi/2
c) 1
d) 3pi
c) 1